Mercer County is a

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 ...

located in the U.S. state of

New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delawa ...

. Its

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 ...

is Trenton, also the state capital,New Jersey County Map
, New Jersey Department of State. Accessed July 10, 2017. prompting its nickname The Capital County. Mercer County alone constitutes the Trenton–Princeton

metropolitan statistical area In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area. Such regions are neither legally incorporated as a city or tow ...

and is considered part of the

New York metropolitan area The New York metropolitan area, also commonly referred to as the Tri-State area, is the largest metropolitan area in the world by urban area, urban landmass, at , and one of the list of most populous metropolitan areas, most populous urban agg ...

by the

U.S. 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 the ...

,(Note: Mercer County, NJ is NOT part of the Philadelphia CSA according to this original source.
"Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas", OMB Bulletin no. 18-04, The White House, Office of Management and Budget, September 4, 2018
/ref> but also directly borders the Philadelphia metropolitan area and is included within the

Federal Communications Commission The Federal Communications Commission (FCC) is an independent agency of the United States federal government that regulates communications by radio, television, wire, satellite, and cable across the United States. The FCC maintains jurisdicti ...

's Philadelphia designated media market.- Philadelphia Market Area Coverage Maps
,

. Accessed December 28, 2014. As of the 2020 census, Mercer County's population was 387,340, making it the state's 12th-most populous county, an increase of 20,827 (5.7%) from the 2010 census when its population was 366,513.DP-1 - Profile of General Demographic Characteristics: 2000; Census 2000 Summary File 1 (SF 1) 100-Percent Data for Mercer County, New Jersey

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 th ...

. Accessed January 21, 2013.NJ Labor Market Views
,

New Jersey Department of Labor and Workforce Development The New Jersey Department of Labor and Workforce Development is a governmental agency of the U.S. state of New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north ...

, March 15, 2011. Accessed October 6, 2013. The county was formed by an act of the New Jersey Legislature on February 22, 1838, from portions of

Burlington County Burlington County is a county in the U.S. state of New Jersey. The county is the largest by area in New Jersey. Its county seat is Mount Holly.

( Nottingham Township, now Hamilton Township),

Hunterdon County Hunterdon County is a county located in the western section of the U.S. state of New Jersey. As of the 2020 U.S. census, the county's population was 128,947, making it the state's 18th-most populous county,Ewing Township, Lawrence Township, Trenton, and portions of Hopewell Township), and Middlesex County, ( West Windsor Township and portions of East Windsor Township).Snyder, John P
''The Story of New Jersey's Civil Boundaries: 1606-1968''
, Bureau of Geology and Topography; Trenton, New Jersey; 1969. p. 161. Accessed October 1, 2013. The former Keith Line bisects the county and is the boundary between municipalities that previously had been separated into West Jersey and East Jersey.

Trenton–Mercer Airport Trenton–Mercer Airport is a county-owned, joint civil–military, public airport located four miles northwest of Trenton in the West Trenton section of Ewing Township, Mercer County, New Jersey. Formerly known as Mercer County Airport, t ...

in Ewing Township is a commercial and

corporate aviation Commercial aviation is the part of civil aviation that involves operating aircraft for remuneration or hire, as opposed to private aviation. Definition Commercial aviation is not a rigorously defined category. All commercial air transport and ...

airport serving Mercer County and its surrounding vicinity. The official residence of the

governor of New Jersey The governor of New Jersey is the head of government of New Jersey. The office of governor is an elected position with a four-year term. There is a two consecutive term term limit, with no limitation on non-consecutive terms. The official r ...

, known as Drumthwacket, is located in

Princeton Princeton University is a private research university in Princeton, New Jersey. Founded in 1746 in Elizabeth as the College of New Jersey, Princeton is the fourth-oldest institution of higher education in the United States and one of the nin ...

, and is listed on both the

U.S. National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic ...

and the New Jersey Register of Historic Places. Mercer County contains 12 municipalities, the fewest of any county in New Jersey, and equal to Hudson County. The county is located in the

Central Jersey Central Jersey is the central region of the U.S. state of New Jersey. The designation of Central New Jersey is a distinct administrative toponym. Geographic area and descriptions While the State of New Jersey is often divided into North an ...

region.

History

Etymology

The county was named for

Continental Army The Continental Army was the army of the United Colonies (the Thirteen Colonies) in the Revolutionary-era United States. It was formed by the Second Continental Congress after the outbreak of the American Revolutionary War, and was establis ...

General Hugh Mercer, who died as a result of wounds received at the

Battle of Princeton The Battle of Princeton was a battle of the American Revolutionary War, fought near Princeton, New Jersey on January 3, 1777, and ending in a small victory for the Colonials. General Lord Cornwallis had left 1,400 British troops under the comman ...

on January 3, 1777. Continental Army Brigadier General Hugh Mercer served in the Continental Army during the Battles of Trenton and Princeton in 1777. A Scotsman that fled to British North America after the failed

Jacobite Rebellion Jacobitism (; gd, Seumasachas, ; ga, Seacaibíteachas, ) was a political movement that supported the restoration of the senior line of the House of Stuart to the Monarchy of the United Kingdom, British throne. The name derives from the first name ...

, he worked closely with George Washington in the American Revolution. On January 3, 1777, Washington's army was en route to Princeton, New Jersey. While leading a vanguard of 350 soldiers, Mercer's brigade encountered two British regiments and a mounted unit. A fight broke out at an orchard grove and Mercer's horse was shot from under him. Getting to his feet, he was quickly surrounded by British troops who mistook him for George Washington and ordered him to surrender. Outnumbered, he drew his saber and began an unequal contest. He was finally beaten to the ground, bayoneted repeatedly (seven times), and left for dead. Legend has it that a beaten Mercer, with a bayonet still impaled in him, did not want to leave his men and the battle and was given a place to rest on a white oak tree's trunk, and those who remained with him stood their ground. The Mercer Oak, against which the dying general rested as his men continued to fight, appears on the county seal and stood for 250 years until it collapsed in 2000.

History

Founded February 22, 1838, from portions of surrounding counties, Mercer County has a historical impact that reaches back to the pivotal battles of the

American Revolutionary War The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was a major war of the American Revolution. Widely considered as the war that secured the independence of t ...

. On the night of December 25–26, 1776, General

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 ...

led American forces across the Delaware River to attack the Hessian forces in the Battle of Trenton on the morning of December 26, also known as the First Battle of Trenton. Following the battle, Washington crossed back to Pennsylvania. He crossed a third time in a surprise attack on the forces of General Charles Cornwallis at the Battle of the Assunpink Creek, on January 2, 1777, also known as the Second Battle of Trenton, and at the

on January 3. The successful attacks built morale among the pro-independence colonists. Ewing Church Cemetery in Ewing is one of the oldest cemeteries in the area, having served the Ewing community for 300 years. It is home to the burial places of hundreds of veterans from The Revolutionary War to the Vietnam War. Since 1790, Trenton has served as the state's capital, earning the county the name "the Capitial County." After the Legislature relocated to Trenton from Perth Amboy in 1790, it purchased land for £250 and 5 shillings and constructed a new state house, designed by Philadelphia-based architect Jonathan Doane, beginning in 1792. The Doane building was covered in stucco, measured 150 by 50 feet (46 m × 15 m), and housed the Senate and Assembly chambers in opposite wings. To meet the demands of the growing state, the structure was expanded several times during the 19th century. New Jersey, along with Nevada, is the only state to have its capital be located at the border with another state, as Trenton across the Delaware River from

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, ...

. The county experienced rapid urbanization and population growth during the first half of the 20th century due to the growth of industrialization in places such as the city of Trenton. Mercer County has the distinction of being the famed landing spot for a fictional Martian invasion of the United States. In 1938, in what has become one of the most famous American radio plays of all time,

Orson Welles George Orson Welles (May 6, 1915 – October 10, 1985) was an American actor, director, producer, and screenwriter, known for his innovative work in film, radio and theatre. He is considered to be among the greatest and most influential f ...

acted out his '' The War of the Worlds'' invasion. His imaginary aliens first "landed" at what is now West Windsor Township. A commemorative monument is erected at

Grover's Mill Grovers Mill is an unincorporated community located within West Windsor Township, in Mercer County, New Jersey. History The community was made famous in Orson Welles' 1938 radio broadcast of ''The War of the Worlds,'' where it was depicted a ...

park. There were 27 Mercer County residents killed during the

September 11, 2001 terrorist attacks The September 11 attacks, commonly known as 9/11, were four coordinated suicide terrorist attacks carried out by al-Qaeda against the United States on Tuesday, September 11, 2001. That morning, nineteen terrorists hijacked four commerc ...

in Lower Manhattan. A long steel beam weighing one ton was given to the county by the

Port Authority of New York and New Jersey The Port Authority of New York and New Jersey, PANYNJ; stylized, in logo since 2020, as Port Authority NY NJ, is a joint venture between the U.S. states of New York and New Jersey, established in 1921 through an interstate compact authorize ...

in March 2011 and is now displayed at Mercer County Park.

Geography and climate

According to the 2010 Census, Mercer County had a total area of , including of land (98.1%) and of water (1.9%).Census 2010 U.S. Gazetteer Files: New Jersey Counties

, Backed up by the

Internet Archive The Internet Archive is an American digital library with the stated mission of "universal access to all knowledge". It provides free public access to collections of digitized materials, including websites, software applications/games, music, ...

as of June 11, 2012. Accessed October 6, 2013. The county is generally flat and low-lying on the inner coastal plain with a few hills closer to the Delaware River. Baldpate Mountain, near Pennington, is the highest hill, at above sea level. The lowest point is at sea level along the Delaware River.

Climate

Most of Mercer has a hot-summer

humid continental climate A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freez ...

(''Dfa'') except for the southern portion of the county near and including Trenton where a

humid subtropical climate A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° ...

(''Cfa'') exists. The hardiness zones are 6b and 7a.

Demographics

2020 census

As of the

2020 United States census The United States census of 2020 was the twenty-fourth decennial United States census. Census Day, the reference day used for the census, was April 1, 2020. Other than a pilot study during the 2000 census, this was the first U.S. census to off ...

, Mercer County has a population of 387,340, making it the 12th most populous county in the state. The racial makeup of the county is quite diverse with 62.3% of the population identifying as white (and 46.7% as non-Hispanic whites), 21.6% of the population being black/African American, and 12.6% of the county's population identifying as Asian. 19.4% of Mercer County is Hispanic/Latino, 0.9% of the population is American Native/Alaskan Native/Native Hawaiian/Pacific Islander, and 2.6% identify as two or more races. 5.4% of Mercer County is under the age of 5, while 21.2% are under the age of 18, and 16.0% are over the age of 65. The female population of the county stands at 50.8%, which is in line with the state as a whole. There are 150,657 housing units in Mercer County, with 63.5% of them being owned by the occupiers. There are 131,440 households with an average of 2.67 persons per household.

2010 census

Economy

Based on data from the Bureau of Economic Analysis, Mercer County had a

gross domestic product Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced and sold (not resold) in a specific time period by countries. Due to its complex and subjective nature this measure is of ...

(GDP) of $28.5 billion in 2018, which was ranked 9th in the state and represented an increase of 2.3% from the previous year. In 2015, the county had a per capita personal income of $63,720, the sixth-highest in New Jersey, and ranked 121st of 3,113 counties in the United States. Mercer County stands among the

highest-income counties in the United States There are 3,144 counties and county-equivalents in the United States. The source of the data is the U.S. Census Bureau and the data is current as of the indicated year. Independent cities are considered county-equivalent by the Census Bureau. ...

, with the Bureau of Economic Analysis having ranked the county as having the 78th-highest

per capita income Per capita income (PCI) or total income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. It is calculated by dividing the area's total income by its total population. Per capita i ...

of all 3,113 counties in the United States (and the sixth-highest in New Jersey) as of 2009. Trenton's role as New Jersey's state capital contributes significantly to Mercer County's economic standing. 9.5% of the population is considered at or below the poverty line. The median household income in Mercer County is $83,306. 89.6% of the population has a high school diploma, and 43.5% of the county's population has a Bachelor's degree or higher, one of the highest rates in the state, as of the 2020 census.

Government

County government

Mercer County has a county executive form of government, in which the

Mercer County Executive The County Executive of Mercer County, New Jersey, United States is the chief officer of the county's executive branch. The executive oversees the administration of county government and works in conjunction with Board of County Commissioners, wh ...

performs executive functions, administering the operation of the county, and a Board of County Commissioners acts in a legislative capacity. The county executive is directly elected to a four-year term of office. The seven-member

Board of County Commissioners 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 ...

, previously known as the Board of Chosen Freeholders, is elected at-large to serve three-year staggered terms of office on a staggered basis, with either two or three seats up for election each year. The Board is led by a Commissioner Chair and Vice-Chair, selected from among its members at an annual reorganization meeting held in January. The Commissioner Board establishes policy and provides a check on the powers of the County Executive. The Board approves all county contracts and gives advice and consent to the County Executive's appointments of department heads, and appointments to boards and commissions. The Commissioner Board votes to approve the budget prepared by the Executive after review and modifications are made. In 2016, freeholders were paid $29,763 and the freeholder director was paid an annual salary of $31,763. That year, the county executive was paid $164,090 per year. , the County Executive is Brian M. Hughes ( D,

, term of office ends December 31, 2023). Mercer County's Commissioners are Commissioner Chair Nina D. Melker (D, Hamilton Township, 2022), Vice Chair Lucylle R. S. Walter (D, Ewing Township, 2023), John A. Cimino (D, Hamilton Township, 2023), Samuel T. Frisby Sr. (D, Trenton, 2024), Andrew Koontz (D, Princeton, 2022), Kristin L McLaughlin (D, Hopewell Township, 2024) and Terrance Stokes (D, Ewing Township, 2024). Pursuant to Article VII Section II of the New Jersey State Constitution, each county in New Jersey is required to have three elected administrative officials known as "constitutional officers." These officers are the County Clerk and County Surrogate (both elected for five-year terms of office) and the County Sheriff (elected for a three-year term). Mercer County's constitutional officers are County Clerk Paula Sollami-Covello (D, Lawrence Township, 2025), Sheriff John A. Kemler (D, 2023) and Surrogate Diane Gerofsky (D, 2026).Elected Officials for Mercer County
Mercer County, updated January 6, 2021. Accessed May 1, 2022. Law enforcement on the county level is provided by the Mercer County Sheriff's Office and the Mercer County Prosecutor's Office. The Mercer County Prosecutor is Angelo J. Onofri of Hamilton Township, who took office in December 2016 after being nominated by

Governor of New Jersey The governor of New Jersey is the head of government of New Jersey. The office of governor is an elected position with a four-year term. There is a two consecutive term term limit, with no limitation on non-consecutive terms. The official r ...

Chris Christie and being confirmed by the New Jersey Senate. Mercer County constitutes Vicinage 7 of the

Superior Court of New Jersey The Superior Court is the state court in the U.S. state of New Jersey, with statewide trial and appellate jurisdiction. The New Jersey Constitution of 1947 establishes the power of the New Jersey courts.Jeffrey S. Mandel, New Jersey Appellate Pr ...

.Mercer Vicinage
, New Jersey Courts. Accessed October 21, 2017. The vicinage is seated at the Mercer County Criminal Courthouse, located at 400 South Warren Street in Trenton. The vicinage has additional facilities for the Civil, Special Civil, General Equity, and Family Parts at the Mercer County Civil Courthouse, located at 175 South Broad Street, also in Trenton. The Assignment Judge for Mercer County is Mary C. Jacobson.

Federal representatives

Portions of the

3rd Third or 3rd may refer to: Numbers * 3rd, the ordinal form of the cardinal number 3 * , a fraction of one third * 1⁄60 of a ''second'', or 1⁄3600 of a ''minute'' Places * 3rd Street (disambiguation) * Third Avenue (disambiguation) * H ...

and 12th

Congressional Districts Congressional districts, also known as electoral districts and legislative districts, electorates, or wards in other nations, are divisions of a larger administrative region that represent the population of a region in the larger congressional bod ...

cover the county.

State representatives

Politics

Mercer County is a reliably Democratic county; it has gone for Republicans only three times (

1956 Events January * January 1 – The Anglo-Egyptian Condominium ends in Sudan. * January 8 – Operation Auca: Five U.S. evangelical Christian missionaries, Nate Saint, Roger Youderian, Ed McCully, Jim Elliot and Pete Fleming, are kille ...

, 1972, 1984) since 1936. In each presidential election of the 21st century, the Democratic candidate earned at least 60% of the vote. Since the 2008 election, every municipality has voted for the Democratic candidate. As of October 1, 2021, there were a total of 265,703 registered voters in Mercer County, of whom 121,653 (45.8%) were registered as Democrats, 41,701 (15.7%) were registered as Republicans and 98,343 (37.0%) were registered as unaffiliated. There were 4,006 voters (1.5%) registered to other parties. In

2008 File:2008 Events Collage.png, From left, clockwise: Lehman Brothers went bankrupt following the Subprime mortgage crisis; Cyclone Nargis killed more than 138,000 in Myanmar; A scene from the opening ceremony of the 2008 Summer Olympics in Beijing; ...

, the county voted for

Barack Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party (United States), Democratic Party, Obama was the first Af ...

by a 35.4% margin over

John McCain John Sidney McCain III (August 29, 1936 – August 25, 2018) was an American politician and United States Navy officer who served as a United States senator from Arizona from 1987 until his death in 2018. He previously served two te ...

, with Obama winning New Jersey by 14.4% over McCain. He won by a similar margin in 2012 and

Hillary Clinton Hillary Diane Rodham Clinton ( Rodham; born October 26, 1947) is an American politician, diplomat, and former lawyer who served as the 67th United States Secretary of State for President Barack Obama from 2009 to 2013, as a United States sen ...

did so in 2016. Joe Biden won the county by 40.0% in 2020, the widest margin for anyone since 1964 by winning with 69.1% of the vote (122,532 votes) to Trump's 29.1% (51,641 votes). In the 2009 New Jersey gubernatorial election, Republican Chris Christie lost the county with 39.27% of the vote (39,769 votes) to incumbent Democratic governor Jon Corzine's 54.51% (55,199 votes), while Independent candidate Chris Daggett won 5.36% of the vote. (5,424 votes). In the

2013 New Jersey gubernatorial election The 2013 New Jersey gubernatorial election took place on November 5, 2013, to elect the governor of New Jersey. Incumbent Republican Governor Chris Christie ran for reelection to a second term in office. He faced Democratic nominee Barbara Bu ...

, Republican governor Chris Christie became the only Republican to win the county since 1993 with 51.9% of the vote (48,530 votes) to Democrat

Barbara Buono Barbara A. Buono (born July 28, 1953) is an American politician who served in the New Jersey Senate from 2002 to 2014, where she represented the 18th Legislative District. She served from 2010 to 2012 as the Majority Leader in the Senate, succ ...

's 46.3% (43,282 votes). In the

2017 New Jersey gubernatorial election Seventeen or 17 may refer to: *17 (number), the natural number following 16 and preceding 18 * one of the years 17 BC, AD 17, 1917, 2017 Literature Magazines * ''Seventeen'' (American magazine), an American magazine * ''Seventeen'' (Japanese m ...

, Democrat Phil Murphy won the county 64.9% to (59,992 votes) 33.1% (30,645 votes). In the 2021 gubernatorial election, Republican Jack Ciattarelli received 34.1% of the vote (34,617 ballots cast) to Democrat Phil Murphy's 65.1% (66,151 votes).

Transportation

Roads and highways

Mercer County has county routes, state routes, U.S. Routes and Interstates that all pass through. , the county had a total of of roadways, of which were maintained by the local municipality, by Mercer County, by the

New Jersey Department of Transportation The New Jersey Department of Transportation (NJDOT) is the agency responsible for transportation issues and policy in New Jersey, including maintaining and operating the state's highway and public road system, planning and developing transportat ...

, by the Delaware River Joint Toll Bridge Commission and by the

New Jersey Turnpike Authority The New Jersey Turnpike Authority (NJTA) is a state agency responsible for maintaining the New Jersey Turnpike and the Garden State Parkway, which are two toll roads in the U.S. state of New Jersey. The agency is headquartered in Woodbridge T ...

. The county roads that traverse through are NJ County Route 518 (only in the Hopewells), NJ County Route 524, County Route 526, NJ County Route 533, NJ County Route 535, NJ County Route 539, NJ County Route 546, NJ County Route 569, NJ County Route 571, and NJ County Route 583. The state routes that pass through Mercer are NJ Route 27 (only in Princeton), NJ Route 29, NJ Route 31, NJ Route 33, NJ Route 129, and NJ Route 133 (only in East Windsor). There are three U.S. Routes that pass through Mercer County: U.S. Route 1, which bisects the county, U.S. Route 130, and

U.S. Route 206 U.S. Route 206 (US 206) is a north–south United States highway in New Jersey and Pennsylvania, United States. Only about a half a mile (800 m) of its length is in Pennsylvania; the Milford–Montague Toll Bridge carries it over the D ...

. Mercer County houses a few limited access roads, such as Interstate 295, Interstate 195, and the

New Jersey Turnpike The New Jersey Turnpike (NJTP) is a system of controlled-access highways in the U.S. state of New Jersey. The turnpike is maintained by the New Jersey Turnpike Authority (NJTA).The Garden State Parkway, although maintained by NJTA, is not cons ...

( Interstate 95). (Mercer is the only county in the state that hosts I-95 and both its auxiliary routes.) I-295 functions as a partial ring-road around the Trenton area, while I-195 serves as an east-west expressway from Trenton to the Jersey Shore. The Turnpike (I-95) passes through the southeastern section of the County, and serves as a major corridor to

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 ...

, Washington, D.C. to the south, and

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

and

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 to the west and by the Canadian provinces ...

towards the north. Two turnpike interchanges are located within Mercer County: Exit 7A in Robbinsville Township and Exit 8 in East Windsor Township. Before 2018, Interstate 95 abruptly ended at the interchange with US 1 in Lawrence Township, and became I-295 south. Signs directed motorists to the continuation of I-95 by using I-295 to I-195 east to the New Jersey Turnpike. This was all due in part to the cancellation of the

Somerset Freeway Interstate 95 (I-95) is a major Interstate Highway that traverses nearly the full extent of the East Coast of the United States, from Florida to Maine. In the state of New Jersey, it runs along much of the mainline of the New Jersey Turnpike ( ...

that was supposed to go from Hopewell Township in Mercer County up to Franklin Township in Somerset County. The section of I-95 west of the US 1 interchange in Lawrence was re-numbered as part of I-295 in March 2018, six months before a direct interchange with Interstate 95 in Pennsylvania and the

Pennsylvania Turnpike The Pennsylvania Turnpike (Penna Turnpike or PA Turnpike) is a toll highway operated by the Pennsylvania Turnpike Commission (PTC) in the U.S. state of Pennsylvania. A controlled-access highway, it runs for across the state. The turnpike's we ...

opened. This planned interchange indirectly prompted another project: the New Jersey Turnpike Authority extended the 'dual-dual' configuration (inner car lanes and outer truck / bus / car lanes) to Interchange 6 in Mansfield Township,

Burlington County Burlington County is a county in the U.S. state of New Jersey. The county is the largest by area in New Jersey. Its county seat is Mount Holly.

from its former end at Interchange 8A in Monroe Township, Middlesex County. This widening was completed in early November 2014.

Public transportation

Mercer hosts several NJ Transit stations, including Trenton,

Hamilton Hamilton may refer to: People * Hamilton (name), a common British surname and occasional given name, usually of Scottish origin, including a list of persons with the surname ** The Duke of Hamilton, the premier peer of Scotland ** Lord Hamilto ...

and Princeton Junction on the Northeast Corridor Line, as well as

on the

Princeton Branch The Princeton Branch is a commuter rail line and service owned and operated by New Jersey Transit (NJT) in the U.S. state of New Jersey. The line is a short branch of the Northeast Corridor Line, running from Princeton Junction northwest to ...

SEPTA The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly 4 million people in five c ...

provides rail service to Center City

Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...

from Trenton and West Trenton. Long-distance transportation is provided by

Amtrak The National Railroad Passenger Corporation, doing business as Amtrak () , is the national passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous U.S. States and nine cities in Canada. ...

train service along the Northeast Corridor through the Trenton Transit Center. NJ Transit's River Line connects Trenton to Camden, with three stations in the county, all within Trenton city limits, at Cass Street, Hamilton Avenue and at the Trenton Transit Center. Mercer County's only commercial airport, and one of three in the state, is

in Ewing Township, which is served by

Frontier Airlines Frontier Airlines is a major ultra-low-cost U.S. airline headquartered in Denver, Colorado. It operates flights to over 100 destinations throughout the United States and 31 international destinations, and employs more than 3,000 staff. The ca ...

, offering nonstop service to and from points nationwide.

Municipalities

The 12 municipalities in Mercer County (with 2010 Census data for population, housing units and area) are:

Historical Municipalities

* Nottingham Township (1688-1856) * Princeton Township (1838-2013) * Borough of Princeton (1813-2013) *Washington Township (renamed Robbinsville Township in 2005)

Sports

Mercer County has a number of large parks. The largest,

Mercer County Park The Richard J. Coffee Mercer County Park is a recreational park located in Mercer County, New Jersey – mostly within West Windsor Township, but also with small western sections extending into Hamilton and Lawrence Townships. Originally and s ...

is the home for the US Olympic Rowing Team's training center. Mercer County is also the home of the

Trenton Thunder The Trenton Thunder are a collegiate summer baseball team of the MLB Draft League. They are located in Trenton, New Jersey, and play their home games at Trenton Thunder Ballpark. From 1994 to 2020, it was a Minor League Baseball team of the ...

baseball team, playing in the MLB Draft League, and the

Jersey Flight The Jersey Flight were a professional indoor football team based in Trenton, New Jersey. The team played its first two seasons in the American Arena League (AAL) and then as a member of the National Arena League (NAL) from 2020 to 2021. They were ...

of the National Arena League. The Thunder were formerly the Double-A affiliate of the

New York Yankees The New York Yankees are an American professional baseball team based in the New York City borough of the Bronx. The Yankees compete in Major League Baseball (MLB) as a member club of the American League (AL) East division. They are one ...

playing in the

Eastern League Eastern League may refer to: Baseball in the United States ''Most recent leagues listed first'' * Eastern League (1938–present), a minor league established in 1923 and renamed Eastern League in 1938, at the Double-A level * Eastern League (1916� ...

before the 2021 Minor League reorganization. The minor league hockey team, the Trenton Titans, established in 1999 and operating as the ECHL affiliate of the NHL's

Philadelphia Flyers The Philadelphia Flyers are a professional ice hockey team based in Philadelphia. The Flyers compete in the National Hockey League (NHL) as a member of the Metropolitan Division in the Eastern Conference (NHL), Eastern Conference. The team play ...

and the AHL's

Adirondack Phantoms The Adirondack Phantoms were a professional ice hockey team in the American Hockey League (AHL), who began play in the 2009–10 AHL season. The Phantoms were based in Glens Falls, New York, playing home games at the Glens Falls Civic Center an ...

, disbanded before the start of the 2013–14 season.

Collegiate athletics

Mercer County is also home to several college athletic programs, including two

NCAA The National Collegiate Athletic Association (NCAA) is a nonprofit organization that regulates student athletics among about 1,100 schools in the United States, Canada, and Puerto Rico. It also organizes the athletic programs of colleges ...

DI schools. Rider University competes as the Rider Broncs in the MAAC. In

wrestling Wrestling is a series of combat sports involving grappling-type techniques such as clinch fighting, throws and takedowns, joint locks, pins and other grappling holds. Wrestling techniques have been incorporated into martial arts, combat s ...

, Rider is a member of the

Eastern Wrestling League The Eastern Wrestling League (EWL) was an NCAA Division I wrestling-only conference. It was made up mostly of schools from the northeastern United States whose primary conferences did not sponsor wrestling as an NCAA-qualifying event. The teams h ...

. The

Princeton Tigers The Princeton Tigers are the athletic teams of Princeton University. The school sponsors 35 varsity teams in 20 sports. The school has won several NCAA national championships, including one in men's fencing, three in women's lacrosse, six in m ...

compete in the

Ivy League The Ivy League is an American collegiate athletic conference comprising eight private research universities in the Northeastern United States. The term ''Ivy League'' is typically used beyond the sports context to refer to the eight school ...

. The College of New Jersey Lions compete in the

DIII as a member of the New Jersey Athletic Conference and the Eastern College Athletic Conference. Mercer County Community College competes as the Mercer Vikings as a member of the

Garden State Athletic Conference The Garden State Athletic Conference (GSAC) is a junior college conference in the National Junior College Athletic Association (NJCAA) for many technical and community colleges in New Jersey. And it is one conference in the Region 19 of the NJC ...

and the

National Junior College Athletic Association The National Junior College Athletic Association (NJCAA), founded in 1938, is the governing association of community college, state college and junior college athletics throughout the United States. Currently the NJCAA holds 24 separate regions ...

Education

School districts in the county include:New Jersey School Directory for Mercer County

New Jersey Department of Education The New Jersey Department of Education (NJ DOE) administers state and federal aid programs affecting more than 1.4 million public and non-public elementary and secondary school children in the state of New Jersey. The department is headquartered ...

. Accessed August 1, 2022. ;K-12 * East Windsor Regional School District *

Ewing Public Schools The Ewing Public Schools is a comprehensive community public school district that serve students in pre-kindergarten through twelfth grade from Ewing Township, in Mercer County, New Jersey, United States. As of the 2020–21 school year, ...

Hamilton Township School District The Hamilton Township School District is a comprehensive community public school district, serving students in pre-kindergarten through twelfth grade from Hamilton Township, in Mercer County, New Jersey, United States. The district consists of ...

* Hopewell Valley Regional School District *

Lawrence Township School District The Lawrence Township School District is a community public school district that serves students in pre-kindergarten through eighth grade from Lawrence Township, in Cumberland County, New Jersey, United States. As of the 2018–19 school year ...

Mercer County Special Services School District The Mercer County Special Services School District (MCSSSD) is a special education public school district headquartered in Hamilton Township, in Mercer County, New Jersey, United States, whose schools offer educational and therapeutic service ...

Princeton Public Schools Princeton Public Schools (PPS) is a comprehensive community public school district that serves students in pre-kindergarten through twelfth grade from Princeton, in Mercer County, New Jersey, United States.Robbinsville Public School District The Robbinsville Public School District is a comprehensive community public school district serving students in pre-kindergarten through twelfth grade in Robbinsville Township (known as Washington Township until 2007), in Mercer County, New Je ...

Trenton Public Schools The Trenton Public Schools is a comprehensive community public school district, serving students in pre-kindergarten through twelfth grade from Trenton, in Mercer County, New Jersey, United States. The district is one of 31 former Abbott distr ...

West Windsor-Plainsboro Regional School District The West Windsor-Plainsboro Regional School District is a comprehensive high achieving regional public school district in New Jersey, United States, serving students in pre-kindergarten through twelfth grade from West Windsor Township (in ...

;9-12 *

Mercer County Technical Schools Mercer County Technical Schools (MCTS), also known as the Area Vocational Technical Schools of Mercer County, is a countywide vocational public school district based in Trenton, serving the high school-aged population of Mercer County, New J ...

;Special There is a state-operated school,

Marie H. Katzenbach School for the Deaf Marie H. Katzenbach School for the Deaf (MKSD), also known as the New Jersey School for the Deaf and Blind, initially the New Jersey State Institution for the Deaf , is a K-12 statewide school in West Trenton, Ewing Township, New Jersey. Its age r ...

Higher Education

Mercer County is home to

Princeton University Princeton University is a private research university in Princeton, New Jersey. Founded in 1746 in Elizabeth as the College of New Jersey, Princeton is the fourth-oldest institution of higher education in the United States and one of the ...

, Princeton Theological Seminary, the

Institute for Advanced Study The Institute for Advanced Study (IAS), located in Princeton, New Jersey, in the United States, is an independent center for theoretical research and intellectual inquiry. It has served as the academic home of internationally preeminent schola ...

, Rider University, Westminster Choir College, The College of New Jersey, and Thomas Edison State University. Mercer County Community College is a county-run community college located in West Windsor.About Mercer County
, Mercer County. Accessed January 11, 2015.

Points of interest

* Drumthwacket, The official residence of the Governor of New Jersey located in

* New Jersey State House, The capitol complex of New Jersey and the meeting point of the state legislature, located at the state capital in Trenton *

, in West Windsor * Hamilton Veterans Park * Mercer County Park September 11 Memorial * Assunpink Creek (part) * Mercer Lake at Mercer County Park * Griggstown Native Grassland Preserve (part) *

Princeton Battlefield The Princeton Battlefield in Princeton, Mercer County, New Jersey, United States, is where American and British troops fought each other on January 3, 1777 in the Battle of Princeton during the American Revolutionary War. The battle ended when t ...

* Mercer Oaks Golf Course * Washington Crossing State Park, in Hopewell Township * Colonial Memorial Park in Trenton *

Lower Trenton Bridge The Lower Trenton Toll Supported Bridge, commonly called the Lower Free Bridge, Warren Street Bridge or Trenton Makes Bridge, is a two-lane Pennsylvania (Petit) through truss bridge over the Delaware River between Trenton, New Jersey and Mor ...

* Trenton War Memorial * Trenton Thunder Ballpark

Wineries

* Hopewell Valley Vineyards * Working Dog Winery, in Robbinsville Township

Notes

References

External links

Official County Website

Mercer County Library System
{{authority control 1838 establishments in New Jersey Central Jersey Counties in the New York metropolitan area Populated places established in 1838

History

Etymology

History

Geography and climate

Climate

Demographics

2020 census

2010 census

Economy

Government

County government

Federal representatives

State representatives

Politics

Transportation

Roads and highways

Public transportation

Municipalities

Historical Municipalities

Sports

Collegiate athletics

Education

Higher Education

Points of interest

Wineries

See also

Notes

References

External links