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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, while Louisiana and Alaska have functionally equivalent subdivisions called
parishes 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 or m ...
and boroughs, respectively. The specific governmental powers of counties vary widely between the states, with many providing some level of services to civil townships, municipalities, and unincorporated areas. Certain municipalities are in multiple counties; New York City is uniquely partitioned into five counties, referred to at the city government level as boroughs. 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 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 ...
. Conversely, those counties in Connecticut, Rhode Island, eight of Massachusetts's 14 counties, and Alaska's Unorganized Borough have no government power, existing only as geographic distinctions. The United States Census Bureau 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 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 do not have counties; instead, the United States Census Bureau also divides them into county equivalents. The U.S. Census Bureau counts American Samoa'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 division A minor civil division (MCD) is a term used by the United States Census Bureau for primary governmental and/or administrative divisions of a county or county-equivalent, typically a municipal government such as a city, town, or civil township. MCD ...
s" (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 The U.S. state of Texas is divided into 254 counties, more than any other U.S. state. Over 20% of Texas counties are generally located within the Houston-Dallas—San Antonio—Austin areas, serving about 20,000,000 people, the majority of the ...
. 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 Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the List of the most populous counties in the United States, most populous county in the United States and in the U.S. state of California, ...
; Cook County, Illinois; Harris County, Texas; Maricopa County, Arizona; and
San Diego County, California San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the fi ...
. , there are currently 3,143 counties and county equivalents in the 50 states and the District of Columbia. 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 Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the ...
(10,039,107), and the county with the largest land area, San Bernardino County, border each other in Southern California (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 The counties of England are areas used for different purposes, which include administrative, geographical, cultural and political demarcation. The term "county" is defined in several ways and can apply to similar or the same areas used by each ...
. English (after 1707 British) colonists brought to their colonies in
North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
a political subdivision that they already used in the British metropole: the counties. Counties were among the earliest units of local government established in the Thirteen Colonies that would become the United States. Virginia created the first counties in order to ease the administrative workload in Jamestown. The House of Burgesses divided the colony first into four "incorporations" in 1617 and finally into eight shires (or counties) in 1634: James City, Henrico,
Charles City Charles is a masculine given name predominantly found in English and French speaking countries. It is from the French form ''Charles'' of the Proto-Germanic name (in runic alphabet) or ''*karilaz'' (in Latin alphabet), whose meaning was "f ...
, Charles River, Warrosquyoake, Accomac, Elizabeth City, and Warwick River. America's oldest intact county court records can be found at Eastville, Virginia, in Northampton (originally Accomac) County, dating to 1632. Maryland established its first county, St. Mary's, in 1637, and Massachusetts followed in 1643. Pennsylvania and
New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...
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. When independence came, the framers of the Constitution 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 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 or m ...
'' that dated back to both the Spanish colonial and French colonial periods when the land was dominated by the Catholic Church. In the twentieth century, the role of local governments strengthened and counties began providing more services, acquiring home rule and
county commission A county commission (or a board of county commissioners) is a group of elected officials (county commissioners) collectively charged with administering the county government in some states of the United States; such commissions usually comprise ...
s to pass
local ordinance A local ordinance is a law issued by a local government. such as a municipality, county, parish, prefecture, or the like. China In Hong Kong, all laws enacted by the territory's Legislative Council remain to be known as ''Ordinances'' () af ...
s pertaining to their unincorporated areas. In 1955, delegates to the Alaska Constitutional Convention 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, 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, established in 2001 as a
consolidated city-county In United States local government, a consolidated city-county is formed when one or more cities and their surrounding county ( parish in Louisiana, borough in Alaska) merge into one unified jurisdiction. As such it has the governmental powers o ...
, previously part of four counties. The newest county equivalents are the Alaskan census areas of Chugach and Copper River, both established in 2019, and the Alaskan boroughs of
Petersburg Petersburg, or Petersburgh, may refer to: Places Australia *Petersburg, former name of Peterborough, South Australia Canada * Petersburg, Ontario Russia *Saint Petersburg, sometimes referred to as Petersburg United States *Peterborg, U.S. Virg ...
established in 2013, Wrangell established in 2008, and Skagway established in 2007.


County variations


Consolidated city-counties

A consolidated city-county is simultaneously a city, which is a municipality (municipal corporation), and a county, which is an administrative division of a state, having the powers and responsibilities of both types of entities. The city limit 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 New York City is composed of five boroughs: The Bronx, Brooklyn, Manhattan, Queens, and Staten Island. Each borough is coextensive with a respective Administrative divisions of New York (state)#County, county of New York (state), New York Stat ...
, 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 Denver () is a consolidated city and county, the capital, and most populous city of the U.S. state of Colorado. Its population was 715,522 at the 2020 census, a 19.22% increase since 2010. It is the 19th-most populous city in the Unite ...
in Colorado). Similarly, some of Alaska'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; 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 San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17th ...
. 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 Atlantic Beach is the name of some places in the United States: *Atlantic Beach, Florida, a city *Atlantic Beach, New York, a village *Atlantic Beach, North Carolina, a town *Atlantic Beach, South Carolina Atlantic Beach is a town in Horry County, ...
,
Baldwin Baldwin is a Germanic name, composed of the elements ''bald'' "bold" and ''win'' "friend". People * Baldwin (name) Places Canada * Baldwin, York Regional Municipality, Ontario * Baldwin, Ontario, in Sudbury District * Baldwin's Mills, Qu ...
, Jacksonville Beach, 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 Beac ...
.


County equivalents

The term ''county equivalents'' is used by the United States Census Bureau to describe divisions that are comparable to counties but called by different names: *
Alaska boroughs The U.S. state of Alaska is divided into 19 Borough (United States), organized boroughs and one Unorganized Borough, Alaska, Unorganized Borough. Alaska and the state of Louisiana are the only states that do not call their first-order administrat ...
: 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: Most of the land area of Alaska is not contained within any of Alaska's 19 organized boroughs . This vast area, larger than France and Germany combined, is officially referred to by the Alaska state government as the '' Unorganized Borough'' 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, 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 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 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 border ...
: The usage of the term " parish" 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. New Orleans is a consolidated city-parish. *
Independent cities 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 ...
: 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 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 ...
;
Carson City, Nevada Carson City is an independent city and the capital of the U.S. state of Nevada. As of the 2020 census, the population was 58,639, making it the sixth largest city in Nevada. The majority of the city's population lives in Eagle Valley, on the ...
; St. Louis, Missouri; and all 38 cities in Virginia, where any area incorporated as a city is outside of the county jurisdiction. * Washington, D.C., outside the jurisdiction of any state, has a special status. The City of Washington comprises the entirety of the District of Columbia, which, in accordance with Article 1, Section 8 of the U.S. Constitution, is under the jurisdiction of the U.S. Congress. When founded in 1801, the District consisted of two counties and three cities. In 1846,
Alexandria County Arlington County is a County (United States), county in the Virginia, Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the Washington, D.C., District of Co ...
(which now forms Arlington County and a portion of the independent city of Alexandria)—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 (state), New York to the west, and Long Island Sound to the ...
''(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 New York City is composed of five boroughs: The Bronx, Brooklyn, Manhattan, Queens, and Staten Island. Each borough is coextensive with a respective Administrative divisions of New York (state)#County, county of New York (state), New York Stat ...
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 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 municipalities of Puerto Rico (Spanish: ''municipios de Puerto Rico'') are the second-level administrative divisions in the Commonwealth of Puerto Rico. There are 78 such administrative divisions covering all 78 incorporated towns and cities ...
* The 3 main islands of the United States Virgin Islands * The 19 Villages of Guam * The 4
municipalities of the Northern Mariana Islands The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands (CNMI; ch, Sankattan Siha Na Islas Mariånas; cal, Commonwealth Téél Falúw kka Efáng llól Marianas), is an unincorporated territory and commonwe ...
* The 3
districts of American Samoa American Samoa is administratively divided into three districts ( Western, Eastern and Manu‘a) and two unorganized atolls (Swains Island and Rose Atoll). The districts are subdivided into 15 counties, which are composed of 76 villages. For ...
* 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 as one county equivalent (with the FIPS code 66010), while the USGS 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 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 ...
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 th ...
. Up until 1871, there was a Washington County within the District of Columbia, but it was dissolved by the District of Columbia Organic Act. Jefferson County, for Thomas Jefferson, is next with 26. The most recent president to have a county named for him was Warren G. Harding, reflecting the slowing rate of county creation since New Mexico and Arizona became states in 1912. The most common names for counties not named after a president are Franklin (25), Clay (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. 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 Jacques Marquette S.J. (June 1, 1637 – May 18, 1675), sometimes known as Père Marquette or James Marquette, was a French Jesuit missionary who founded Michigan's first European settlement, Sault Sainte Marie, and later founded Saint Ignac ...
. The county's equivalent in the state of Louisiana, the parish (Fr. ''paroisse civile'' and Sp. ''parroquia'') took its name during the state's French and Spanish colonial periods. Before the Louisiana Purchase and granting of statehood, government was often administered in towns where major church parishes 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 A charter is the grant of authority or rights, stating that the granter formally recognizes the prerogative of the recipient to exercise the rights specified. It is implicit that the granter retains superiority (or sovereignty), and that the rec ...
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 A county commission (or a board of county commissioners) is a group of elected officials (county commissioners) collectively charged with administering the county government in some states of the United States; such commissions usually comprise ...
,
board of supervisors A board of supervisors is a governmental body that oversees the operation of county government in the U.S. states of Arizona, California, Iowa, Mississippi, Virginia, and Wisconsin, as well as 16 counties in New York. There are equivalent agenc ...
, commissioners' court, county council,
county court A county court is a court based in or with a jurisdiction covering one or more counties, which are administrative divisions (subnational entities) within a country, not to be confused with the medieval system of ''county courts'' held by the high ...
, or county Legislature. In cases in which a
consolidated city-county In United States local government, a consolidated city-county is formed when one or more cities and their surrounding county ( parish in Louisiana, borough in Alaska) merge into one unified jurisdiction. As such it has the governmental powers o ...
or independent city exists, a city council usually governs city/county or city affairs. In some counties, day-to-day operations are overseen by an elected county executive or by a chief administrative officer or county administrator 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 A clerk is a white-collar worker who conducts general office tasks, or a worker who performs similar sales-related tasks in a retail environment. The responsibilities of clerical workers commonly include record keeping, filing, staffing service ...
, county treasurer, county surrogate,
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 ...
, and others.
District attorney In the United States, a district attorney (DA), county attorney, state's attorney, prosecuting attorney, commonwealth's attorney, or state attorney is the chief prosecutor and/or chief law enforcement officer representing a U.S. state in a l ...
s 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 A courthouse or court house is a building that is home to a local court of law and often the regional county government as well, although this is not the case in some larger cities. The term is common in North America. In most other English-spe ...
, is generally called the county seat ("parish seat" in Louisiana, "borough seat" in Alaska, or " shire town" 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 and Rhode Island, counties are geographic entities, but not governmental jurisdictions. At the other extreme,
Maryland counties There are 23 counties and one independent city in the U.S. state of Maryland. Though an independent city rather than a county, the City of Baltimore is considered the equal of a county for most purposes and is a county-equivalent. Many of the co ...
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 State schools (in England, Wales, Australia and New Zealand) or public schools (Scottish English and North American English) are generally primary or secondary schools that educate all students without charge. They are funded in whole or in pa ...
, 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 or towns, which sometimes exercise local powers or administration. Throughout the United States, counties may contain other independent, self-governing municipalities.


Minimal scope

In New England, counties function at most as judicial court districts and sheriff's departments (presently, in Connecticut only as judicial court districts—and in Rhode Island, they have lost both those functions and most others but they are still used by the United States Census Bureau 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 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 The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four Census Bureau Region, census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of ...
, counties typically provide, at a minimum, courts, public utilities, libraries, hospitals, public health 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 A coroner is a government or judicial official who is empowered to conduct or order an inquest into Manner of death, the manner or cause of death, and to investigate or confirm the identity of an unknown person who has been found dead within th ...
/ medical examiner, treasurer,
assessor An assessor may be: * ''Assessor'' (fish), a genus of fishes * Assessor (law), the assistant to a judge or magistrate * Assessor (Oxford), a senior officer of the University of Oxford * Assessor (property), an expert who calculates the value of pr ...
, auditor,
comptroller A comptroller (pronounced either the same as ''controller'' or as ) is a management-level position responsible for supervising the quality of accounting and financial reporting of an organization. A financial comptroller is a senior-level executi ...
, and
district attorney In the United States, a district attorney (DA), county attorney, state's attorney, prosecuting attorney, commonwealth's attorney, or state attorney is the chief prosecutor and/or chief law enforcement officer representing a U.S. state in a l ...
. In most states, the county sheriff 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 is never a county responsibility, and the state's responses to prisoners' appeals are the responsibility of the state attorney general, 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, or village. A few counties directly provide public transportation 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 Special district may refer to: * Certain districts of Ethiopia not part of a zone * Special district (United States) Special districts (also known as special service districts, special district governments, limited purpose entities, or special-pu ...
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 and
southern Southern may refer to: Businesses * China Southern Airlines, airline based in Guangzhou, China * Southern Airways, defunct US airline * Southern Air, air cargo transportation company based in Norwalk, Connecticut, US * Southern Airways Express, M ...
states, more populated counties provide many facilities, such as airports,
convention center A convention center (American English; or conference centre in British English) is a large building that is designed to hold a convention, where individuals and groups gather to promote and share common interests. Convention centers typica ...
s, museums, recreation centers, beaches, harbors, zoos, clinics, law libraries, and public housing. They provide services such as child and family services, elder services, mental health services, welfare services, veterans assistance services,
animal control An animal control service or animal control agency is an entity charged with responding to requests for help with animals ranging from wild animals, dangerous animals, or animals in distress. An individual who works for such an entity was once kno ...
, probation supervision, historic preservation, food safety regulation, and environmental health services. They have many additional officials like
public defender A public defender is a lawyer appointed to represent people who otherwise cannot reasonably afford to hire a lawyer to defend themselves in a trial. Several countries provide people with public defenders, including the UK, Hungary and Singapore, ...
s, 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, 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 for a total of 3,143 counties and county equivalents in the 50 states and District of Columbia. There are an additional 100 county equivalents in the territories of the United States. The average number of counties per state is 62, with a range from the three counties of Delaware to the 254 counties of Texas.
Southern Southern may refer to: Businesses * China Southern Airlines, airline based in Guangzhou, China * Southern Airways, defunct US airline * Southern Air, air cargo transportation company based in Norwalk, Connecticut, US * Southern Airways Express, M ...
and Midwestern states generally tend to have more counties than Western or Northeastern 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, the eight counties of Connecticut, and eight of the 14 counties of Massachusetts 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 Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the List of the most populous counties in the United States, most populous county in the United States and in the U.S. state of 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, with a population of 5,275,541. Cook County's population is larger than that of 28 individual U.S. states and the combined populations of the six smallest states. The least populous county is Loving County, Texas, with 64 residents in 2020. Eight county equivalents in the U.S. territories have no human population: Rose Atoll, Northern Islands Municipality, Baker Island, Howland Island, Jarvis Island,
Johnston Atoll Johnston Atoll is an Unincorporated territories of the United States, unincorporated territory of the United States, currently administered by the United States Fish and Wildlife Service (USFWS). Johnston Atoll is a National Wildlife Refuge and ...
, Kingman Reef, and Navassa Island. The remaining three islands in the U.S. Minor Outlying Islands (
Midway Atoll Midway Atoll (colloquial: Midway Islands; haw, Kauihelani, translation=the backbone of heaven; haw, Pihemanu, translation=the loud din of birds, label=none) is a atoll in the North Pacific Ocean. Midway Atoll is an insular area of the Unit ...
, Palmyra Atoll and Wake Island) 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 (coextensive with the New York City
Borough of 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. sta ...
), with 72,033 persons per square mile (27,812/km2) in 2015. The Yukon–Koyukuk Census Area, Alaska, 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
median In statistics and probability theory, the median is the value separating the higher half from the lower half of a data sample, a population, or a probability distribution. For a data set, it may be thought of as "the middle" value. The basic fe ...
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''. 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 is , whereas in Utah it is . The most extensive county or county equivalent is the Yukon–Koyukuk Census Area, Alaska, 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, with a land area of 20,057 square miles (51,947 km2). The least extensive county is Kalawao County, Hawaii, 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 of
Falls Church, Virginia Falls Church is an independent city (United States), independent city in the Commonwealth (U.S. state), Commonwealth of Virginia. As of the 2020 United States Census, 2020 census, the population was 14,658. Falls Church is included in the Wash ...
, 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, 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 and Oklahoma City, for example, both contain portions of five counties. New York City 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 of the city: Manhattan (New York County), The Bronx (Bronx County), Queens (Queens County), Brooklyn (Kings County), and
Staten Island Staten Island ( ) is a borough of New York City, coextensive with Richmond County, in the U.S. state of New York. Located in the city's southwest portion, the borough is separated from New Jersey by the Arthur Kill and the Kill Van Kull an ...
(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; Ne ...
* Lists of counties in the United States ** List of United States counties and county equivalents ***
Consolidated city-county In United States local government, a consolidated city-county is formed when one or more cities and their surrounding county ( parish in Louisiana, borough in Alaska) merge into one unified jurisdiction. As such it has the governmental powers o ...
*** List of former United States counties ***
List of highest counties in the United States The following table ranks the 50 highest United States counties or county-equivalents by mean elevation. This list uses the "mean of extremes" elevation which is the arithmetic mean of the highest and lowest elevations. The highest U.S. county b ...
*** List of highest U.S. county high points ***
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 * Municipalities of Mexico


Notes


References


External links


Geographic Areas Reference Manual
by the United States Census Bureau
National Association of Counties

Atlas of Historical County Boundaries


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