Mercer County, New Jersey
Mercer County: County in West Virginia, United States
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 10 years in 2020 county had an estimated population of 367,239 inhabitants. Its county seat is Princeton. The county was created 187 years ago in 1837.
Quick Facts about Mercer County
| Population : | 367,239 (2020) |
| Country : | United States of America |
| State : | New Jersey (United States) |
| Different from : | Mercer County, Mercer County, Mercer County, Mercer County, Mercer County, Mercer County, Mercer County |
| Area : | 1090 km2 |
| Water as percent of area : | 0.4% |
| Land as percent of area : | 99.6% |
| Named for : | Hugh Mercer |
| Altitude : | 440 feet / 134 meters |
| Capital : | Princeton |
| Establishment : | March 03, 1837 |
| Time Zone : | America/New_York |
| Local time : | 03:50:19 (22nd February 2025) |
| Density : | 337 Pop. per km² as of 2020 |
| Population growth : | 0.2% (2010-2020) |
Geography
Mercer County is located at 40°17'0"N 74°42'6"W (40.2834000, -74.7016900). It has 7 neighbors: McDowell County, Bland County, Giles County, Tazewell County, Raleigh County, Summers County and Wyoming County.
Mercer County map
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The largest city of Mercer County is Trenton with a population of 82,957. Other cities include, Princeton population 30,879, Twin Rivers population 7,443, Prospect Park population 5,817 and Hightstown population 5,276. See all Mercer County cities & populated places.
Mercer County Populated Places
Cities, towns, neighborhoods & other populated places in Mercer County.
| City Name | Population | Title |
|---|---|---|
| Trenton | 82,957 | The capital of New Jersey. |
| Ewing | 36,442 | Township in Mercer County, New Jersey |
| Lawrence | 32,595 | Township in Mercer County, New Jersey |
| Princeton | 30,879 | Private Ivy League research university in Princeton, New Jersey, United States |
| West Windsor | 28,517 | Township in Mercer County, New Jersey, United States |
| Robbinsville | 14,495 | Township in Mercer County, New Jersey |
| White Horse | 9,494 | Census designated place in New Jersey |
| Twin Rivers | 7,443 | Neighborhood |
| Prospect Park | 5,817 | Borough in Passaic County, New Jersey |
| Hightstown | 5,276 | Borough in Mercer County, New Jersey |
| Pennington | 2,607 | Borough of New Jersey |
| Princeton Junction | 2,465 | Town |
| Hopewell | 1,897 | Township in Mercer County, New Jersey |
| Millstone | 410 | Borough in Somerset County, New Jersey |
- Official Website
Official website of Mercer County
Mercer County has 7 neighbours.
- McDowell County county in West Virginia, United States
- Bland County county in Virginia, United States
- Giles County county in Virginia, United States
- Tazewell County county in Virginia, United States
- Raleigh County county in West Virginia, United States
- Summers County county in West Virginia, United States
- Wyoming County county in West Virginia, United States
Demographics
The population of Mercer County increased by 0.2% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 366,513 | - | census |
| 2011 | 367,378 | 0.24% | estimation process |
| 2012 | 368,554 | 0.32% | estimation process |
| 2013 | 369,429 | 0.24% | estimation process |
| 2014 | 368,909 | -0.14% | estimation process |
| 2015 | 368,124 | -0.21% | estimation process |
| 2016 | 367,699 | -0.12% | estimation process |
| 2017 | 368,168 | 0.13% | estimation process |
| 2018 | 368,188 | 0.01% | estimation process |
| 2019 | 367,430 | -0.21% | estimation process |
| 2020 | 367,239 | -0.05% | estimation process |
People born in Mercer County (3)
People born in Mercer County, including musician Henry Reed, educator Olivia A. Davidson, journalist Bill Goode, .
List
Other places with the same name (8)
- Mercer County , Pennsylvania county in Pennsylvania, United States with a population of 108,545 people.
- Mercer County , West Virginia county in West Virginia, United States with a population of 58,258 people.
- Mercer County , Ohio county in Ohio, United States with a population of 41,274 people.
- Mercer County , Kentucky county in Kentucky, United States with a population of 21,889 people.
- Mercer County , Illinois county in Illinois, United States with a population of 15,225 people.
- Mercer County , North Dakota county in North Dakota, United States with a population of 8,174 people.
- Mercer County , Missouri county in Missouri, United States with a population of 3,558 people.
New Jersey Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Somerset | 965,424 | Community in Franklin Township, New Jersey |
| Bergen County | 930,394 | County in New Jersey, United States |
| Middlesex County | 822,736 | County in New Jersey, United States |
| Essex County | 800,501 | County in New York, United States |
| Hudson County | 671,666 | County in New Jersey, United States |
| Monmouth County | 618,381 | County in New Jersey, United States |
| Ocean County | 614,237 | County in New Jersey, United States |
| Union County | 555,394 | County in Oregon, United States |
| Camden County | 506,809 | County in Missouri, United States |
| Passaic County | 500,382 | County in New Jersey, United States |
| Morris County | 491,087 | County in New Jersey, United States |
| Burlington County | 446,596 | County in New Jersey, United States |
| Somerset County | 329,331 | County in Maine, United States |
| Gloucester County | 293,245 | County in New Jersey, United States |
| Newark | 282,520 | The most populous city in New Jersey and the center of the Newark metropolitan area. |
| Atlantic County | 262,945 | County in New Jersey, United States |
