Mercer County , New Jersey

County in West Virginia, United States

Mercer County, NJ locator map
Location of Mercer County, NJ on New Jersey map.

About

Mercer County is a county located in the U.S. state of New Jersey. As of the 2010 census, the population was 366,513 and a population density of 336 people per km². After 9 years in 2019 county had an estimated population of 367,430 inhabitants. Its county seat is Princeton. The county was created 183 years ago in 1837.

The county has a total area of 420.85 square miles (1090 km2).

Mercer County, NJ Quick Facts

Population : 367,430 (2019)
Country : United States of America
State : New Jersey
Different from : Mercer County
Area : 1090 km2
Water as percent of area : 0.4
Named for : Hugh Mercer
Altitude : 440 feet / 134 meters
Capital : Princeton
Establishment : March 03, 1837
Time Zone : America/New_York
Local time : 05:30:08 (9th March 2021)
Density : 337 Pop. per km² as of 2019
Population growth : 0.25% (2010-2019)

Mercer County map

Mercer County, NJ has 7 neighbors .

Year Population Method
2010 366,513 census
2011 367,378 estimation process
2012 368,554 estimation process
2013 369,429 estimation process
2014 368,909 estimation process
2015 368,124 estimation process
2016 367,699 estimation process
2017 368,168 estimation process
2018 368,188 estimation process
2019 367,430 estimation process

The population of Mercer County increased by 0.25% in 9 years.

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People born in Mercer County, NJ (3)

Many people were born here, including musician Henry Reed, educator Olivia A. Davidson, journalist Bill Goode, you can see a list of people who born in Mercer County, NJ.

Mercer County, NJ Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Mercer County, NJ.

City Name Population Title
Trenton 83,203 Capital of New Jersey, United States and seat of Mercer County, New Jersey, United States
Ewing 36,303 Township in Mercer County, New Jersey
Lawrence 32,435 Township in Mercer County, New Jersey
Princeton 31,187 Private Ivy League research university in Princeton, New Jersey, United States
West Windsor 27,895 Township in Mercer County, New Jersey, United States
Robbinsville 14,543 Township in Mercer County, New Jersey
Prospect Park 5,843 Borough in Passaic County, New Jersey
Hightstown 5,304 Borough in Mercer County, New Jersey
Pennington 2,576 Borough of New Jersey
Hopewell 1,906 Township in Mercer County, New Jersey
Millstone 408 Borough in Somerset County, New Jersey

New Jersey Other Counties (more counties)

County Name Population Title
Somerset 965,424 Community in Franklin Township, New Jersey
Bergen County 932,202 County in New Jersey, United States
Middlesex County 825,062 County in New Jersey, United States
Essex County 798,975 County in New York, United States
Hudson County 672,391 County in New Jersey, United States
Monmouth County 618,795 County in New Jersey, United States
Ocean County 607,186 County in New Jersey, United States
Union County 556,341 County in Oregon, United States
Camden County 506,471 County in Missouri, United States
Passaic County 501,826 County in New Jersey, United States
Morris County 491,845 County in New Jersey, United States
Burlington County 445,349 County in New Jersey, United States
Somerset County 328,934 County in Maine, United States
Gloucester County 291,636 County in New Jersey, United States
Newark 282,011 Most populous city in the state of New Jersey, United States; county seat of Essex County, New Jersey
Atlantic County 263,670 County in New Jersey, United States