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In the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
, a county is an
administrative Administration may refer to: Management of organizations * Management, the act of directing people towards accomplishing a goal ** Administrative Assistant, traditionally known as a Secretary, or also known as an administrative officer, administ ...
or political subdivision of a
state State may refer to: Arts, entertainment, and media Literature * ''State Magazine'', a monthly magazine published by the U.S. Department of State * ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States * ''Our S ...
that consists of a geographic region with specific boundaries and usually some level of governmental authority. The term "
county A county is a geographic region of a country used for administrative or other purposes Chambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...
" is used in 48 states, while
Louisiana Louisiana , group=pronunciation (French: ''La Louisiane'') is a state in the Deep South and South Central regions of the United States. It is the 20th-smallest by area and the 25th most populous of the 50 U.S. states. Louisiana is borde ...
and
Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S. ...
have functionally equivalent subdivisions called parishes and
boroughs A borough is an administrative division in various English-speaking countries. In principle, the term ''borough'' designates a self-governing walled town, although in practice, official use of the term varies widely. History In the Middle A ...
, respectively. The specific governmental powers of counties vary widely between the states, with many providing some level of services to
civil township A civil township is a widely used unit of local government in the United States that is subordinate to a county, most often in the northern and midwestern parts of the country. The term town is used in New England, New York, and Wisconsin to re ...
s,
municipalities A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality'' may also mean the go ...
, and
unincorporated area An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...
s. Certain municipalities are in multiple counties;
New York City New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...
is uniquely partitioned into five counties, referred to at the city government level as
boroughs A borough is an administrative division in various English-speaking countries. In principle, the term ''borough'' designates a self-governing walled town, although in practice, official use of the term varies widely. History In the Middle A ...
. Some municipalities have consolidated with their county government to form consolidated city-counties, or have been legally separated from counties altogether to form independent cities. Conversely, those counties in
Connecticut Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its capita ...
,
Rhode Island Rhode Island (, like ''road'') is a state in the New England region of the Northeastern United States. It is the smallest U.S. state by area and the seventh-least populous, with slightly fewer than 1.1 million residents as of 2020, but it ...
, eight of Massachusetts's 14 counties, and Alaska's
Unorganized Borough The Unorganized Borough is composed of the portions of the U.S. state of Alaska which are not contained in any of its 19 organized boroughs. While referred to as the "Unorganized Borough," it is not a borough itself, as it forgoes that level of ...
have no government power, existing only as geographic distinctions. The
United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of t ...
uses the term "county equivalent" to describe places that are comparable to counties, but called by different names. Louisiana parishes, the organized boroughs of Alaska, independent cities, and the
District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
are equivalent to counties for administrative purposes. Alaska's Unorganized Borough is further divided into 11 census areas that are statistically equivalent to counties. In 2024, the U.S. Census Bureau will begin to also use Connecticut's Councils of Governments for county-equivalent statistical purposes.
Territories of the United States Territories of the United States are sub-national administrative divisions overseen by the federal government of the United States. The various American territories differ from the U.S. states and tribal reservations as they are not sove ...
do not have counties; instead, the United States Census Bureau also divides them into county equivalents. The U.S. Census Bureau counts
American Samoa American Samoa ( sm, Amerika Sāmoa, ; also ' or ') is an unincorporated territory of the United States located in the South Pacific Ocean, southeast of the island country of Samoa. Its location is centered on . It is east of the Internationa ...
's districts and atolls as county equivalents."2010 FIPS Codes for Counties and County Equivalent Entities"
Census.gov. Retrieved July 6, 2018.
American Samoa locally has places called "counties", but these entities are considered to be " minor civil divisions" (not true counties) by the U.S. Census Bureau. The number of counties per state ranges from the three counties of Delaware to the 254 counties of Texas. County populations also vary widely: in 2017, according to the Census Bureau, more than half the U.S. population is concentrated in just 143 of the more than 3,000 counties, or just 4.6% of all counties; the five largest counties ordered by population are Los Angeles County, California;
Cook County, Illinois Cook County is the most populous county in the U.S. state of Illinois and the second-most-populous county in the United States, after Los Angeles County, California. More than 40% of all residents of Illinois live within Cook County. As of 2 ...
;
Harris County, Texas Harris County is a county located in the U.S. state of Texas; as of the 2020 census, the population was 4,731,145, making it the most populous county in Texas and the third most populous county in the United States. Its county seat is Houston, ...
;
Maricopa County, Arizona Maricopa County is in the south-central part of the U.S. state of Arizona. As of the 2020 United States census, 2020 census, the population was 4,420,568, making it the state's most populous county, and List of the most populous counties in the ...
; and San Diego County, California. , there are currently 3,143 counties and
county equivalents In the United States, a county is an administrative or political subdivision of a state that consists of a geographic region with specific boundaries and usually some level of governmental authority. The term "county" is used in 48 states, wh ...
in the 50 states and the
District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
. If the 100 county equivalents in the U.S. territories are counted, then the total is 3,243 counties and county equivalents in the United States. The county with the largest population, Los Angeles County (10,039,107), and the county with the largest land area,
San Bernardino County San Bernardino County (), officially the County of San Bernardino, is a county located in the southern portion of the U.S. state of California, and is located within the Inland Empire area. As of the 2020 U.S. Census, the population was 2,181, ...
, border each other in
Southern California Southern California (commonly shortened to SoCal) is a geographic and cultural region that generally comprises the southern portion of the U.S. state of California. It includes the Los Angeles metropolitan area, the second most populous urban a ...
(however, eleven boroughs in Alaska are larger in area than San Bernardino County).


History

The origin of the American counties are in the counties of England.
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...
(after 1707
British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, ...
) colonists brought to their colonies in North America a political subdivision that they already used in the British
metropole A metropole (from the Greek ''metropolis'' for "mother city") is the homeland, central territory or the state exercising power over a colonial empire. From the 19th century, the English term ''metropole'' was mainly used in the scope of ...
: the counties. Counties were among the earliest units of
local government Local government is a generic term for the lowest tiers of public administration within a particular sovereign state. This particular usage of the word government refers specifically to a level of administration that is both geographically-l ...
established in the
Thirteen Colonies The Thirteen Colonies, also known as the Thirteen British Colonies, the Thirteen American Colonies, or later as the United Colonies, were a group of British colonies on the Atlantic coast of North America. Founded in the 17th and 18th cent ...
that would become the United States.
Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...
created the first counties in order to ease the administrative workload in Jamestown. The
House of Burgesses The House of Burgesses was the elected representative element of the Virginia General Assembly, the legislative body of the Colony of Virginia. With the creation of the House of Burgesses in 1642, the General Assembly, which had been establishe ...
divided the colony first into four "incorporations" in 1617 and finally into eight shires (or counties) in 1634: James City, Henrico, Charles City,
Charles River The Charles River ( Massachusett: ''Quinobequin)'' (sometimes called the River Charles or simply the Charles) is an river in eastern Massachusetts. It flows northeast from Hopkinton to Boston along a highly meandering route, that doubles b ...
, Warrosquyoake, Accomac,
Elizabeth City Elizabeth City is a city in Pasquotank County, North Carolina, United States. As of the 2020 census, it had a population of 18,629. Elizabeth City is the county seat and largest city of Pasquotank County. It is the cultural, economic and educ ...
, and Warwick River. America's oldest intact county court records can be found at
Eastville, Virginia Eastville is a town in Northampton County, Virginia, United States. The population was 203 at the 2000 census. It is the county seat of Northampton County. The Northampton County Courthouse Historic District is part of the Eastville Historic Di ...
, in Northampton (originally Accomac) County, dating to 1632.
Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
established its first county, St. Mary's, in 1637, and
Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
followed in 1643.
Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
and New York delegated significant power and responsibility from the colony government to county governments and thereby established a pattern for most of the United States, although counties remained relatively weak in
New England New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York (state), New York to the west and by the Can ...
. When
independence Independence is a condition of a person, nation, country, or state in which residents and population, or some portion thereof, exercise self-government, and usually sovereignty, over its territory. The opposite of independence is the statu ...
came, the
framers of the Constitution The Constitutional Convention took place in Philadelphia from May 25 to September 17, 1787. Although the convention was intended to revise the league of states and first system of government under the Articles of Confederation, the intention fr ...
left the matter to the states. Subsequently, state constitutions conceptualized county governments as arms of the state. Louisiana instead adopted the local divisions called '' parishes'' that dated back to both the Spanish colonial and French colonial periods when the land was dominated by the
Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...
. In the twentieth century, the role of local governments strengthened and counties began providing more services, acquiring
home rule Home rule is government of a colony, dependent country, or region by its own citizens. It is thus the power of a part (administrative division) of a state or an external dependent country to exercise such of the state's powers of governance wit ...
and county commissions to pass local ordinances pertaining to their
unincorporated area An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...
s. In 1955, delegates to the
Alaska Constitutional Convention The Constitution of the State of Alaska was ratified on April 4, 1956 and took effect with Alaska's admission to the United States as a U.S. state on January 3, 1959. History and background The statehood movement In the 1940s, the movement for ...
wanted to avoid the traditional county system and adopted their own unique model with different types of ''boroughs'' varying in powers and duties. In some states, these powers are partly or mostly devolved to the counties' smaller divisions usually called
townships A township is a kind of human settlement or administrative subdivision, with its meaning varying in different countries. Although the term is occasionally associated with an urban area, that tends to be an exception to the rule. In Australia, C ...
, though in New York, New England and Wisconsin they are called "towns". The county may or may not be able to override its townships on certain matters, depending on state law. The newest county in the United States is the city and county of
Broomfield, Colorado Broomfield is a consolidated city and county located in the U.S. state of Colorado. Broomfield has a consolidated government which operates under Article XX, Sections 10-13 of the Constitution of the State of Colorado. The Broomfield populati ...
, established in 2001 as a consolidated city-county, previously part of four counties. The newest county equivalents are the Alaskan census areas of
Chugach Chugach , Chugach Sugpiaq or Chugachigmiut is the name of an Alaska Native people in the region of the Kenai Peninsula and Prince William Sound on the southern coast of Alaska. The Chugach people are an Alutiiq ( Pacific Eskimo) people who spea ...
and Copper River, both established in 2019, and the Alaskan boroughs of Petersburg established in 2013, Wrangell established in 2008, and
Skagway The Municipality and Borough of Skagway is a first-class borough in Alaska on the Alaska Panhandle. As of the 2020 census, the population was 1,240, up from 968 in 2010. The population doubles in the summer tourist season in order to deal with ...
established in 2007.


County variations


Consolidated city-counties

A consolidated city-county is simultaneously a city, which is a
municipality A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality'' may also mean the go ...
(municipal corporation), and a county, which is an
administrative division Administrative division, administrative unit,Article 3(1). country subdivision, administrative region, subnational entity, constituent state, as well as many similar terms, are generic names for geographical areas into which a particular, ind ...
of a state, having the powers and responsibilities of both types of entities. The
city limit City limits or city boundaries refer to the defined boundary or border of a city. The area within the city limit can be called the city proper. Town limit/boundary and village limit/boundary apply to towns and villages. Similarly, corporate lim ...
or jurisdiction is synonymous with the county line, as the two administrative entities become a non-dichotomous single entity. For this reason, a consolidated city-county is officially remarked as ''name of city – name of county'' (i.e., Augusta–Richmond County in Georgia). The same is true of the boroughs of New York City, each of which is coextensive with a county of New York State. For those entities in which the city uses the same name as the county, ''city and county of name'' may be used (i.e., City and County of Denver in Colorado). Similarly, some of
Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S. ...
's boroughs have merged with their principal cities, creating unified city-boroughs. Some such consolidations and mergers have created cities that rank among the geographically largest cities in the world, though often with population densities far below those of most urban areas. There are 40 consolidated city-counties in the U.S., including Augusta–Richmond County; the City and County of Denver, Colorado; the
City and County of Honolulu, Hawaii Honolulu County (officially known as the City and County of Honolulu, formerly Oahu County) is a consolidated city–county in the U.S. state of Hawaii. The city–county includes both the city of Honolulu (the state's capital and largest ci ...
; Indianapolis–Marion County, Indiana; Jacksonville–Duval County, Florida; Louisville–Jefferson County, Kentucky; Lexington–Fayette County, Kentucky; Kansas City–Wyandotte County, Kansas; Nashville–Davidson County, Tennessee; New Orleans–Orleans Parish, Louisiana; the City and County of Philadelphia, Pennsylvania; and the City and County of San Francisco, California. A consolidated city-county may still contain independent municipalities maintaining some governmental powers that did not merge with the rest of the county. For example, the government of Jacksonville–Duval County, Florida, still provides county-level services to the four independent municipalities within its borders: Atlantic Beach, Baldwin,
Jacksonville Beach Jacksonville Beach is a coastal resort city in Duval County, Florida, United States. It was incorporated on May 22, 1907, as Pablo Beach, and would later change its name to Jacksonville Beach in 1925. The city is part of group of communities col ...
, and
Neptune Beach Neptune Beach is a beachfront city east of Jacksonville in Duval County, Florida, United States. When the majority of Duval County communities consolidated with Jacksonville in 1968, Neptune Beach, along with Jacksonville Beach, Atlantic Beach ...
.


County equivalents

The term ''county equivalents'' is used by the
United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of t ...
to describe divisions that are comparable to counties but called by different names: * Alaska boroughs: the state adopted the term "borough" instead of "county" to reflect Alaska's system with different classes of boroughs varying in governmental powers. *
Alaska census areas Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Central Alaskan Yup'ik language, Yup'ik: ''Alaskaq''; tli, Anáaski) is a U.S. state, state located in the Western United States on the northwest extremity o ...
: Most of the land area of Alaska is not contained within any of Alaska's 19 organized boroughs . This vast area, larger than
France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...
and
Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
combined, is officially referred to by the Alaska state government as the ''
Unorganized Borough The Unorganized Borough is composed of the portions of the U.S. state of Alaska which are not contained in any of its 19 organized boroughs. While referred to as the "Unorganized Borough," it is not a borough itself, as it forgoes that level of ...
'' and outside of other incorporated borough limits, has no independent "county" government, although several incorporated city governments exist within its boundaries; the majority of it is governed and run by the State of Alaska as an extension of state government. The
United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of t ...
, in cooperation with the Alaska state government for census and electoral districting purposes, has divided the Unorganized Borough into 11 census areas for statistical purposes only.These 11 statistical areas are used solely by the
United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of t ...
to tabulate population and other census statistics within the Unorganized Borough; they have no legal basis in Alaska state or federal law other than for electoral representation and federal financial assistance purposes.
* Louisiana parishes: The usage of the term "
parish A parish is a territorial entity in many Christian denominations, constituting a division within a diocese. A parish is under the pastoral care and clerical jurisdiction of a priest, often termed a parish priest, who might be assisted by one o ...
" for a territorial entity or local government in Louisiana dates back to both the Spanish colonial and French colonial periods when the land was dominated by the
Catholic Church The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...
.
New Orleans New Orleans ( , ,New Orleans
is a consolidated city-parish. * Independent cities: These are cities that legally belong to no county. They differ from consolidated city-counties in that in the case of a consolidated city-county, the county at least nominally exists, whereas in the case of an independent city, no county even nominally exists. There are 41 such cities in the United States, including
Baltimore, Maryland Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...
; Carson City, Nevada;
St. Louis, Missouri St. Louis () is the second-largest city in Missouri, United States. It sits near the confluence of the Mississippi and the Missouri Rivers. In 2020, the city proper had a population of 301,578, while the bi-state metropolitan area, which e ...
; and all 38 cities in
Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...
, where any area incorporated as a city is outside of the county jurisdiction. *
Washington, D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
, outside the jurisdiction of any state, has a special status. The City of Washington comprises the entirety of the
District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
, which, in accordance with Article 1, Section 8 of the
U.S. Constitution The Constitution of the United States is the supreme law of the United States of America. It superseded the Articles of Confederation, the nation's first constitution, in 1789. Originally comprising seven articles, it delineates the nation ...
, is under the jurisdiction of the
U.S. Congress The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washin ...
. When founded in 1801, the District consisted of two counties and three cities. In 1846, Alexandria County (which now forms
Arlington County Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county ...
and a portion of the independent city of
Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandri ...
)—including the then City of Alexandria—was given back to Virginia. In 1871, the three remaining entities—the City of Washington, City of Georgetown, and Washington County (which was coterminous with the district)—were merged into a consolidated government of District of Columbia by an act of Congress. Georgetown was abolished as a city by another act in 1895. *
Connecticut councils of governments Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its cap ...
''(beginning in 2024)'': County governments were abolished in Connecticut in 1960. Regional councils of governments (COG's) have since been developed as a means of cooperation and coordination between municipalities. Application for the COG's to be considered county equivalents for statistical purposes was made to the Census Bureau in 2019, approved in 2022, and will be fully implemented by 2024. Consolidated city-counties are not designated county equivalents for administrative purposes; since both the city and the county at least nominally exist, they are properly classified as counties in their own right. Likewise, the boroughs of New York City are coextensive with counties and are therefore by definition also not county equivalents.


Territories

There are technically no counties in U.S. territories.
American Samoa American Samoa ( sm, Amerika Sāmoa, ; also ' or ') is an unincorporated territory of the United States located in the South Pacific Ocean, southeast of the island country of Samoa. Its location is centered on . It is east of the Internationa ...
has its own counties, but the U.S. Census Bureau does not count them as counties (instead, the U.S. Census Bureau counts American Samoa's three districts and two atolls as county equivalents). American Samoa's counties are treated as minor civil divisions. Most territories are directly divided into municipalities or similar units, which are treated as equivalent of counties for statistical purposes: * The 78 municipalities of Puerto Rico * The 3 main islands of the
United States Virgin Islands The United States Virgin Islands,. Also called the ''American Virgin Islands'' and the ''U.S. Virgin Islands''. officially the Virgin Islands of the United States, are a group of Caribbean islands and an unincorporated and organized territory ...
* The 19
Villages of Guam The United States territory of Guam is divided into nineteen municipalities, called villages. Each village is governed by an elected mayor. Village populations range in size from under 1,000 to over 40,000. In the 2020 census, the total populati ...
* The 4 municipalities of the Northern Mariana Islands * The 3 districts of American Samoa * The 2 atolls of American Samoa * The 9 islands of the U.S. Minor Outlying Islands The U.S. Census Bureau counts all of
Guam Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...
as one county equivalent (with the FIPS code 66010), while the
USGS The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, a ...
counts Guam's election districts (villages) as county equivalents. The U.S. Census Bureau counts the 3 main islands in the U.S. Virgin Islands as county equivalents, while the USGS counts the districts of the U.S. Virgin Islands (of which there are 2) as county equivalents.


Names and etymologies

Common sources of county names are names of people, geographic features, places in other states or countries, and animals. Quite a few counties bear names of Native American, French, or Spanish origin. Counties are most often named for people, often political figures or early settlers, with over 2,100 of the 3,144 total so named. The most common county name, with 31, is Washington County, for America's first president,
George Washington George Washington (February 22, 1732, 1799) was an American military officer, statesman, and Founding Father who served as the first president of the United States from 1789 to 1797. Appointed by the Continental Congress as commander of ...
. Up until 1871, there was a Washington County within the
District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
, but it was dissolved by the District of Columbia Organic Act. Jefferson County, for
Thomas Jefferson Thomas Jefferson (April 13, 1743 – July 4, 1826) was an American statesman, diplomat, lawyer, architect, philosopher, and Founding Father who served as the third president of the United States from 1801 to 1809. He was previously the natio ...
, is next with 26. The most recent president to have a county named for him was
Warren G. Harding Warren Gamaliel Harding (November 2, 1865 – August 2, 1923) was the 29th president of the United States, serving from 1921 until his death in 1923. A member of the Republican Party, he was one of the most popular sitting U.S. presidents. A ...
, reflecting the slowing rate of county creation since
New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ke ...
and
Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...
became states in 1912. The most common names for counties not named after a president are
Franklin Franklin may refer to: People * Franklin (given name) * Franklin (surname) * Franklin (class), a member of a historical English social class Places Australia * Franklin, Tasmania, a township * Division of Franklin, federal electoral d ...
(25),
Clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...
(18), and Montgomery (18). After people, the next most common source of county names are geographic features and locations, with some counties even being named after counties in other states, or for places in countries such as the United Kingdom. The most common geographic county name is
Lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...
. Words from Native American languages, as well as the names of Native American leaders and tribes, lend their names to many counties. Quite a few counties bear names of French or Spanish origin, such as Marquette County being named after French missionary Father Jacques Marquette. The county's equivalent in the state of Louisiana, the
parish A parish is a territorial entity in many Christian denominations, constituting a division within a diocese. A parish is under the pastoral care and clerical jurisdiction of a priest, often termed a parish priest, who might be assisted by one o ...
(Fr. ''paroisse civile'' and Sp. ''parroquia'') took its name during the state's French and Spanish colonial periods. Before the
Louisiana Purchase The Louisiana Purchase (french: Vente de la Louisiane, translation=Sale of Louisiana) was the acquisition of the territory of Louisiana by the United States from the French First Republic in 1803. In return for fifteen million dollars, or app ...
and granting of statehood, government was often administered in towns where major church
parish A parish is a territorial entity in many Christian denominations, constituting a division within a diocese. A parish is under the pastoral care and clerical jurisdiction of a priest, often termed a parish priest, who might be assisted by one o ...
es were located. Of the original 19 civil parishes of Louisiana that date from statehood in 1807, nine were named after the Roman Catholic parishes from which they were governed.


County government


Organization

The structure and powers of a county government may be defined by the general law of the state or by a charter specific to that county. States may allow only general-law counties, only charter counties, or both. Generally, general-law local governments have less autonomy than chartered local governments. Counties are usually governed by an elected body, variously called the county commission, board of supervisors,
commissioners' court Commissioners' court, or in Arkansas a quorum court, is the governing body of county government in three US states: Arkansas, Texas and Missouri. It is similar in function to a board of county commissioners. A similar system was in place in the ...
,
county council A county council is the elected administrative body governing an area known as a county. This term has slightly different meanings in different countries. Ireland The county councils created under British rule in 1899 continue to exist in Irel ...
, county court, or county Legislature. In cases in which a consolidated city-county or
independent city An independent city or independent town is a city or town that does not form part of another general-purpose local government entity (such as a province). Historical precursors In the Holy Roman Empire, and to a degree in its successor states ...
exists, a
city council A municipal council is the legislative body of a municipality or local government area. Depending on the location and classification of the municipality it may be known as a city council, town council, town board, community council, rural counc ...
usually governs city/county or city affairs. In some counties, day-to-day operations are overseen by an elected
county executive A county executive, county manager or county mayor is the head of the executive branch of government in a United States county. The executive may be an elected or an appointed position. When elected, the executive typically functions either as a ...
or by a chief administrative officer or
county administrator In local government in the United States, a county administrator or county manager is a person appointed to be the administrative manager of a county, in a council–manager form of county government. In some counties, the equivalent position is ...
who reports to the board, the mayor, or both. In many states, the board in charge of a county holds powers that transcend all three traditional branches of government. It has the legislative power to enact ordinances for the county; it has the executive power to oversee the executive operations of county government; and it has quasi-judicial power with regard to certain limited matters (such as hearing appeals from the planning commission if one exists). In many states, several important officials are elected separately from the board of commissioners or supervisors and cannot be fired by the board. These positions may include county clerk, county
treasurer A treasurer is the person responsible for running the treasury of an organization. The significant core functions of a corporate treasurer include cash and liquidity management, risk management, and corporate finance. Government The treasury ...
, county surrogate, sheriff, and others. District attorneys or state attorneys are usually state-level as opposed to county-level officials, but in many states, counties and state judicial districts have coterminous boundaries. The site of a county's administration, and often the county courthouse, is generally called the
county seat A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is in use in Canada, China, Hungary, Romania, Taiwan, and the United States. The equivalent term shire town is used in the US st ...
("parish seat" in Louisiana, "borough seat" in Alaska, or "
shire town A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is in use in Canada, China, Hungary, Romania, Taiwan, and the United States. The equivalent term shire town is used in the US st ...
" in several New England counties). The county seat usually resides in a municipality. However, some counties may have multiple seats or no seat. In some counties with no incorporated municipalities, a large settlement may serve as the county seat.


Scope of power

The power of county governments varies widely from state to state, as does the relationship between counties and incorporated cities. The powers of counties arise from state law and vary widely. In
Connecticut Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its capita ...
and
Rhode Island Rhode Island (, like ''road'') is a state in the New England region of the Northeastern United States. It is the smallest U.S. state by area and the seventh-least populous, with slightly fewer than 1.1 million residents as of 2020, but it ...
, counties are geographic entities, but not governmental jurisdictions. At the other extreme, Maryland counties and the county equivalent
City of Baltimore Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was ...
handle almost all services, including public education, although the state retains an active oversight authority with many of these services. In most Midwestern and Northeastern states, counties are further subdivided into
townships A township is a kind of human settlement or administrative subdivision, with its meaning varying in different countries. Although the term is occasionally associated with an urban area, that tends to be an exception to the rule. In Australia, C ...
or
towns A town is a human settlement. Towns are generally larger than villages and smaller than cities, though the criteria to distinguish between them vary considerably in different parts of the world. Origin and use The word "town" shares an ori ...
, which sometimes exercise local powers or administration. Throughout the United States, counties may contain other independent, self-governing
municipalities A municipality is usually a single administrative division having corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate. The term ''municipality'' may also mean the go ...
.


Minimal scope

In New England, counties function at most as judicial court districts and sheriff's departments (presently, in
Connecticut Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its capita ...
only as judicial court districts—and in
Rhode Island Rhode Island (, like ''road'') is a state in the New England region of the Northeastern United States. It is the smallest U.S. state by area and the seventh-least populous, with slightly fewer than 1.1 million residents as of 2020, but it ...
, they have lost both those functions and most others but they are still used by the
United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of t ...
and some other federal agencies for some federal functions), and most of the governmental authority below the state level is in the hands of towns and cities. In several of Maine's sparsely populated counties, small towns rely on the county for law enforcement, and in
New Hampshire New Hampshire is a state in the New England region of the northeastern United States. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Gulf of Maine to the east, and the Canadian province of Quebec to the nor ...
several social programs are administered at the state level. In Connecticut, Rhode Island, and parts of Massachusetts, counties are now only geographic designations, and they do not have any governmental powers. All government is either done at the state level or at the municipal level. In Connecticut and parts of Massachusetts, regional councils have been established to partially fill the void left behind by the abolished county governments.Unlike in Massachusetts, Connecticut's regional councils do not conform to the old county lines, but rather, they are composed of towns that share the same geographic region and have similar demographics. The regional councils' authority is limited compared with a county government—they have authority only over infrastructure and land use planning, distribution of state and federal funds for infrastructure projects, emergency preparedness, and limited law enforcement duties.


Moderate scope

In the Mid-Atlantic and Midwest, counties typically provide, at a minimum, courts,
public utilities A public utility company (usually just utility) is an organization that maintains the infrastructure for a public service (often also providing a service using that infrastructure). Public utilities are subject to forms of public control and ...
, libraries, hospitals,
public health Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals". Analyzing the det ...
services, parks, roads, law enforcement, and jails. There is usually a county registrar, recorder, or clerk (the exact title varies) who collects vital statistics, holds elections (sometimes in coordination with a separate elections office or commission), and prepares or processes certificates of births, deaths, marriages, and dissolutions (divorce decrees). The county recorder normally maintains the official record of all real estate transactions. Other key county officials include the coroner/
medical examiner The medical examiner is an appointed official in some American jurisdictions who is trained in pathology that investigates deaths that occur under unusual or suspicious circumstances, to perform post-mortem examinations, and in some jurisdictio ...
,
treasurer A treasurer is the person responsible for running the treasury of an organization. The significant core functions of a corporate treasurer include cash and liquidity management, risk management, and corporate finance. Government The treasury ...
, assessor,
auditor An auditor is a person or a firm appointed by a company to execute an audit.Practical Auditing, Kul Narsingh Shrestha, 2012, Nabin Prakashan, Nepal To act as an auditor, a person should be certified by the regulatory authority of accounting and a ...
, comptroller, and district attorney. In most states, the
county sheriff A sheriff is a government official, with varying duties, existing in some countries with historical ties to England where the office originated. There is an analogous, although independently developed, office in Iceland that is commonly transla ...
is the chief law enforcement officer in the county. However, except in major emergencies where clear chains of command are essential, the county sheriff normally does not directly control the police departments of city governments, but merely cooperates with them (e.g., under mutual aid pacts). Thus, the most common interaction between county and city law enforcement personnel is when city police officers deliver suspects to sheriff's deputies for detention or incarceration in the county jail. In most states, the state courts and local law enforcement are organized and implemented along county boundaries, but nearly all of the substantive and procedural law adjudicated in state trial courts originates from the state legislature and state appellate courts. In other words, most criminal defendants are prosecuted for violations of state law, not local ordinances, and if they, the district attorney, or police seek reforms to the criminal justice system, they will usually have to direct their efforts towards the state legislature rather than the county (which merely implements state law). A typical criminal defendant will be arraigned and subsequently indicted or held over for trial before a trial court in and for a particular county where the crime occurred, kept in the county jail (if he is not granted bail or cannot make bail), prosecuted by the county's district attorney, and tried before a jury selected from that county. But long-term incarceration is rarely a county responsibility, execution of
capital punishment Capital punishment, also known as the death penalty, is the state-sanctioned practice of deliberately killing a person as a punishment for an actual or supposed crime, usually following an authorized, rule-governed process to conclude that t ...
is never a county responsibility, and the state's responses to prisoners' appeals are the responsibility of the
state attorney general The state attorney general in each of the 50 U.S. states, of the federal district, or of any of the territories is the chief legal advisor to the state government and the state's chief law enforcement officer. In some states, the attorney gener ...
, who has to defend before the state appellate courts the prosecutions conducted by locally elected district attorneys in the name of the state. Furthermore, county-level trial court judges are officers of the judicial branch of the state government rather than county governments. In many states, the county controls all unincorporated lands within its boundaries. In states with a township tier, unincorporated land is controlled by the townships. Residents of unincorporated land who are dissatisfied with county-level or township-level resource allocation decisions can attempt to vote to incorporate as a
city A city is a human settlement of notable size.Goodall, B. (1987) ''The Penguin Dictionary of Human Geography''. London: Penguin.Kuper, A. and Kuper, J., eds (1996) ''The Social Science Encyclopedia''. 2nd edition. London: Routledge. It can be def ...
,
town A town is a human settlement. Towns are generally larger than villages and smaller than cities, though the criteria to distinguish between them vary considerably in different parts of the world. Origin and use The word "town" shares an ori ...
, or
village A village is a clustered human settlement or community, larger than a hamlet but smaller than a town (although the word is often used to describe both hamlets and smaller towns), with a population typically ranging from a few hundred ...
. A few counties directly provide
public transport Public transport (also known as public transportation, public transit, mass transit, or simply transit) is a system of transport for passengers by group travel systems available for use by the general public unlike private transport, typi ...
ation themselves, usually in the form of a simple bus system. However, in most counties, public transportation is provided by one of the following: a special district that is coterminous with the county (but exists separately from the county government), a multi-county regional transit authority, or a state agency.


Broad scope

In
western Western may refer to: Places *Western, Nebraska, a village in the US *Western, New York, a town in the US *Western Creek, Tasmania, a locality in Australia *Western Junction, Tasmania, a locality in Australia *Western world, countries that id ...
and southern states, more populated counties provide many facilities, such as airports, convention centers, museums, recreation centers, beaches, harbors, zoos, clinics,
law libraries A law library is a special library used by law students, lawyers, judges and their law clerks, historians and other scholars of legal history in order to research the law. Law libraries are also used by people who draft or advocate for ne ...
, and
public housing Public housing is a form of housing tenure in which the property is usually owned by a government authority, either central or local. Although the common goal of public housing is to provide affordable housing, the details, terminology, def ...
. They provide services such as child and family services, elder services, mental health services, welfare services, veterans assistance services, animal control,
probation Probation in criminal law is a period of supervision over an offender, ordered by the court often in lieu of incarceration. In some jurisdictions, the term ''probation'' applies only to community sentences (alternatives to incarceration), such ...
supervision, historic preservation, food safety regulation, and environmental health services. They have many additional officials like public defenders, arts commissioners, human rights commissioners, and planning commissioners. There may be a county fire department and a county police department – as distinguished from fire and police departments operated by individual cities, special districts, or the state government. For example,
Gwinnett County, Georgia Gwinnett County ( ) is located in the north central portion of the U.S. state of Georgia. It forms part of the Atlanta metropolitan area. In 2020, the population was 957,062, making it the second-most populous county in Georgia (after Fulto ...
, and its county seat, the city of Lawrenceville, each have their own police departments. (A separate county sheriff's department is responsible for security of the county courts and administration of the county jail.) In several southern states, public school systems are organized and administered at the county level.


Statistics

, there were 3,007 counties, 64 Louisiana parishes, 19 organized boroughs and 11 census areas in Alaska, 41 independent cities, and the
District of Columbia ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...
for a total of 3,143 counties and
county equivalents In the United States, a county is an administrative or political subdivision of a state that consists of a geographic region with specific boundaries and usually some level of governmental authority. The term "county" is used in 48 states, wh ...
in the 50 states and District of Columbia. There are an additional 100 county equivalents in the
territories of the United States Territories of the United States are sub-national administrative divisions overseen by the federal government of the United States. The various American territories differ from the U.S. states and tribal reservations as they are not sove ...
. The average number of counties per state is 62, with a range from the
three counties The Three Counties of England are traditionally the three agrarian counties of Gloucestershire, Herefordshire and Worcestershire. Including towns and cities such as Worcester, Gloucester, Cheltenham, Hereford, Leominster, Stourbridge, Evesham, ...
of
Delaware Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacent Del ...
to the 254 counties of
Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...
. Southern and
Midwestern The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of the United States. I ...
states generally tend to have more counties than
Western Western may refer to: Places *Western, Nebraska, a village in the US *Western, New York, a town in the US *Western Creek, Tasmania, a locality in Australia *Western Junction, Tasmania, a locality in Australia *Western world, countries that id ...
or
Northeastern The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each se ...
states, as many Northeastern states are not large enough in area to warrant a large number of counties, and many Western states were sparsely populated when counties were created. The five counties of
Rhode Island Rhode Island (, like ''road'') is a state in the New England region of the Northeastern United States. It is the smallest U.S. state by area and the seventh-least populous, with slightly fewer than 1.1 million residents as of 2020, but it ...
, the eight counties of
Connecticut Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its capita ...
, and eight of the 14 counties of
Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
no longer have functional county governments, but continue to exist as legal and census entities.


Population

The average U.S. county population was 104,435 in 2019, while the median county, which is
Nicholas County, West Virginia Nicholas County is a county located in the central region of U.S. state of West Virginia. As of the 2020 census, the population was 24,604. Its county seat is Summersville. The county was created in 1818 by the Virginia General Assembly and ...
, had a population of 25,965 in 2019. The most populous county is Los Angeles County, California, with 10,014,009 residents in 2020. This number is greater than the populations of 41 U.S. states. It also makes the population of Los Angeles County 17.4 times greater than that of the least populous state, Wyoming. The second most populous county is
Cook County, Illinois Cook County is the most populous county in the U.S. state of Illinois and the second-most-populous county in the United States, after Los Angeles County, California. More than 40% of all residents of Illinois live within Cook County. As of 2 ...
, with a population of 5,275,541. Cook County's population is larger than that of 28 individual
U.S. states In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sove ...
and the combined populations of the six smallest states. The least populous county is
Loving County, Texas Loving County is a county in the U.S. state of Texas. With a population of 64 per the 2020 census, it is the least-populous county in the United States. Its county seat and only community is Mentone. The county was originally created in 1887, ...
, with 64 residents in 2020. Eight county equivalents in the
U.S. territories Territories of the United States are sub-national administrative divisions overseen by the federal government of the United States. The various American territories differ from the U.S. states and tribal reservations as they are not sover ...
have no human population:
Rose Atoll Rose Atoll, sometimes called Rose Island or Motu O Manu ("Bird Island") by people of the nearby Manu'a Islands, is an oceanic atoll within the U.S. territory of American Samoa. An uninhabited wildlife refuge, it is the southernmost point bel ...
,
Northern Islands Municipality Northern Islands Municipality is one of the four main political divisions of the Commonwealth of the Northern Mariana Islands. It consists of a long string of the northernmost islands of the Northern Marianas, including (from north to south) Far ...
,
Baker Island Baker Island, formerly known as New Nantucket, is an uninhabited atoll just north of the Equator in the central Pacific Ocean about southwest of Honolulu. The island lies almost halfway between Hawaii and Australia. Its nearest neighbor is H ...
,
Howland Island Howland Island () is an uninhabited coral island located just north of the equator in the central Pacific Ocean, about southwest of Honolulu. The island lies almost halfway between Hawaii and Australia and is an unorganized, unincorporated ter ...
,
Jarvis Island Jarvis Island (; formerly known as Bunker Island or Bunker's Shoal) is an uninhabited coral island located in the South Pacific Ocean, about halfway between Hawaii and the Cook Islands. It is an unincorporated, unorganized territory of the Un ...
, Johnston Atoll,
Kingman Reef Kingman Reef is a largely submerged, uninhabited, triangle-shaped reef, geologically an atoll, east-west and north-south, in the North Pacific Ocean, roughly halfway between the Hawaiian Islands and American Samoa. It has an area of 3 hectar ...
, and
Navassa Island Navassa Island (; ht, Lanavaz; french: l'île de la Navasse, sometimes ) is a small uninhabited island in the Caribbean Sea. Located northeast of Jamaica, south of Cuba, and west of Jérémie on the Tiburon Peninsula of Haiti, it is subject ...
. The remaining three islands in the U.S. Minor Outlying Islands ( Midway Atoll,
Palmyra Atoll Palmyra Atoll (), also referred to as Palmyra Island, is one of the Northern Line Islands (southeast of Kingman Reef and north of Kiribati). It is located almost due south of the Hawaiian Islands, roughly one-third of the way between Hawaii a ...
and
Wake Island Wake Island ( mh, Ānen Kio, translation=island of the kio flower; also known as Wake Atoll) is a coral atoll in the western Pacific Ocean in the northeastern area of the Micronesia subregion, east of Guam, west of Honolulu, southeast of T ...
) have small non-permanent human populations. The county equivalent with the smallest non-zero population counted in the census is Swains Island, American Samoa (17 people), although since 2008 this population has not been permanent either.Atoll envisioned as a model for sustainability
Star Advertiser, 20 September 2014.
The most densely populated county or county equivalent is
New York County, New York New is an adjective referring to something recently made, discovered, or created. New or NEW may refer to: Music * New, singer of K-pop group The Boyz Albums and EPs * ''New'' (album), by Paul McCartney, 2013 * ''New'' (EP), by Regurgitator, ...
(coextensive with the
New York City New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...
Borough of Manhattan), with 72,033 persons per square mile (27,812/km2) in 2015. The
Yukon–Koyukuk Census Area, Alaska Yukon–Koyukuk Census Area () is a census area in the U.S. state of Alaska. As of the 2020 census, the population was 5,343, down from 5,588 in 2010. With an area of , it is the largest of any county or county-equivalent in the United Sta ...
, is both the most extensive and the least densely populated county or county equivalent with 0.0380 persons per square mile (0.0147/km2) in 2015. In the 50 states (plus District of Columbia), a total of 981 counties have a population over 50,000; 592 counties have a population over 100,000; 137 counties have a population over 500,000; 45 counties have a population over 1,000,000; and 14 counties have a population over 2,000,000. At the other extreme, 35 counties have a population under 1,000; 307 counties have a population under 5,000; 709 counties have a population under 10,000; and 1,492 counties have a population between 10,000 and 50,000.


Area

At the
2000 U.S. Census The United States census of 2000, conducted by the Census Bureau, determined the resident population of the United States on April 1, 2000, to be 281,421,906, an increase of 13.2 percent over the 248,709,873 people enumerated during the 1990 cen ...
, the median land area of U.S. counties was , which is two-thirds of the median land area of a ceremonial county of England, and a little more than a quarter of the median land area of a French ''
département In the administrative divisions of France, the department (french: département, ) is one of the three levels of government under the national level (" territorial collectivities"), between the administrative regions and the communes. Ninety ...
''. Counties in the western United States typically have a much larger land area than those in the eastern United States. For example, the median land area of counties in
Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...
is , whereas in
Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...
it is . The most extensive county or county equivalent is the
Yukon–Koyukuk Census Area, Alaska Yukon–Koyukuk Census Area () is a census area in the U.S. state of Alaska. As of the 2020 census, the population was 5,343, down from 5,588 in 2010. With an area of , it is the largest of any county or county-equivalent in the United Sta ...
, with a land area of 145,505 square miles (376,856 km2). All nine of the most extensive county equivalents are in Alaska. The most extensive county is
San Bernardino County, California San Bernardino County (), officially the County of San Bernardino, is a county located in the southern portion of the U.S. state of California, and is located within the Inland Empire area. As of the 2020 U.S. Census, the population was 2,181, ...
, with a land area of 20,057 square miles (51,947 km2). The least extensive county is
Kalawao County, Hawaii Kalawao County ( haw, Kalana o Kalawao) is a county in the U.S. state of Hawaii. It is the smallest county in the 50 states by land area and the second-smallest county by population, after Loving County, Texas. The county encompasses the Kala ...
, with a land area of 11.991 square miles (31.058 km2). The least extensive county equivalent in the 50 states is the
independent city An independent city or independent town is a city or town that does not form part of another general-purpose local government entity (such as a province). Historical precursors In the Holy Roman Empire, and to a degree in its successor states ...
of Falls Church, Virginia, with a land area of 1.999 square miles (5.177 km2). If U.S. territories are included, the least extensive county equivalent is
Kingman Reef Kingman Reef is a largely submerged, uninhabited, triangle-shaped reef, geologically an atoll, east-west and north-south, in the North Pacific Ocean, roughly halfway between the Hawaiian Islands and American Samoa. It has an area of 3 hectar ...
, with a land area of 0.01 square miles (0.03 km2).


Geographic relationships between cities and counties

In some states, a municipality may be in only one county and may not annex territory in adjacent counties, but in the majority of states, the state constitution or state law allows municipalities to extend across county boundaries. At least 32 states include municipalities in multiple counties.
Dallas Dallas () is the List of municipalities in Texas, third largest city in Texas and the largest city in the Dallas–Fort Worth metroplex, the List of metropolitan statistical areas, fourth-largest metropolitan area in the United States at 7.5 ...
and
Oklahoma City Oklahoma City (), officially the City of Oklahoma City, and often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, it ranks 20th among United States cities in population, a ...
, for example, both contain portions of five counties.
New York City New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...
is an unusual case because it encompasses multiple entire counties in one city. Each of those counties is coextensive with one of the five
boroughs A borough is an administrative division in various English-speaking countries. In principle, the term ''borough'' designates a self-governing walled town, although in practice, official use of the term varies widely. History In the Middle A ...
of the city:
Manhattan Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...
(New York County),
The Bronx The Bronx () is a borough of New York City, coextensive with Bronx County, in the state of New York. It is south of Westchester County; north and east of the New York City borough of Manhattan, across the Harlem River; and north of the New Y ...
(Bronx County),
Queens Queens is a borough of New York City, coextensive with Queens County, in the U.S. state of New York. Located on Long Island, it is the largest New York City borough by area. It is bordered by the borough of Brooklyn at the western tip of Long ...
(Queens County),
Brooklyn Brooklyn () is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, be ...
(Kings County), and Staten Island (Richmond County).


See also

*
Index of U.S. counties __NOTOC__ A *Abbeville County, South Carolina *Acadia Parish, Louisiana *Accomack County, Virginia * Ada County, Idaho * Adair County: Iowa; Kentucky; Missouri; Oklahoma * Adams County: Colorado; Idaho; Illinois; Indiana; Iowa; Mississippi; Neb ...
*
Lists of counties in the United States 330px, The 3142 counties and county-equivalents of the United States ">United_States.html" ;"title="county-equivalents of the United States">county-equivalents of the United States The following are lists of U.S. counties by various criteria. ...
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List of United States counties and county equivalents This article lists the 3,243 counties and county equivalents of the United States. The 50 states of the United States are divided into 3,007 ''counties'', political and geographic subdivisions of a state; 236 other local governments and geographi ...
*** Consolidated city-county ***
List of former United States counties This is a list of former United States counties, a list of United States counties (administrative subunits of a U.S. state) that no longer exist. They were established by a state, provincial, colonial, or territorial government. Most of these ...
*** List of highest counties in the United States ***
List of highest U.S. county high points The following table lists the 60 highest United States County (United States), county or county-equivalent high points. The highest U.S. county high point is the summit of Denali in the Denali Borough, Alaska, Denali Borough of Alaska, the highest ...
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List of the most common U.S. county names This is a list of U.S. county names that are used in two or more states. Ranked are the 429 most common county names, which are shared by counties in two or more states each, accounting for 1,732 of the 3,140 counties and county-equivalents in t ...
* List of FIPS codes *
Census geographic units of Canada The census geographic units of Canada are the census subdivisions defined and used by Canada's federal government statistics bureau Statistics Canada to conduct the country's quinquennial census. These areas exist solely for the purposes of stat ...
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Municipalities of Mexico Municipalities (''municipios'' in Spanish) are the second-level administrative divisions of Mexico, where the first-level administrative division is the ''state'' (Spanish: estado). They should not be confused with cities or towns that may shar ...


Notes


References


External links


Geographic Areas Reference Manual
by the
United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of t ...

National Association of Counties

Atlas of Historical County Boundaries


{{authority control United States 2 Counties, United States Political divisions of the United States