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Mercer County Quick Facts

The data presented below is derived from various sources, including the U.S. Census Bureau, Fact Finder, 2016 American Community Survey (ACS), the New Jersey Department of Community Affairs 2016 Revised Average and Median New Sales Prices for Homes with New Home Warranties; New Jersey Department of Labor and Workforce Development Demographic Research 2014.

  • What is the county's population?
    • 371,023 (2016 Year Estimates)
  • What is the total number of dwelling units, and households in the county?
    • Dwelling units – 144,714 (2016 Year Estimates)
    • Households - 130,546
  • What was the racial composition of the county including Hispanic and non-Hispanic in 2016?
    • White – 186,624(50.3%)
    • Black – 79,770 (21.5%)
    • American Indian – 2,226 (0.6%)
    • Asian – 38,667 (10.5%)
    • Pacific Islander – 742 (0.2%)
    • Hispanic population – 63,444 (17.1%)
  • What are the county’s median household income, per capita income and poverty rates?
    • Median household income – $72,804 (2016 Year Estimates)
    • Per capita income – $37,680
    • Poverty rate – 41,183 (11.1 %)
  • What is the county population under 19 and over 65 years of age?
    • 18 years old and under – 79,769 (21.5%) (2016 Year Estimates)
    • Over 65 – 53,056 (14.3%) (2016 Year Estimates)
  • What is the total number of employees working in the private sector covered by unemployment insurance? What is the total number of local, county, state and federal government workers?
    • Private sector employees – 162,046
    • Government employees – 72,700
  • What is the land area and population density of the county?
    • Land area – 226 square miles
    • Population density – 1,632.2 persons per square mile (2016 Year Estimates)
  • How much does new housing cost in Mercer County?
    • Median new home  sales price – $447,500 average (2016)
    • Median Property Value – $283,600 (Data USA)
  • What is the county’s level of educational attainment? How many residents have high school, bachelor and advanced college degrees?
    • Residents held various educational degrees
    • High school – (87.4%)
    • Bachelor degree or higher – (39.6%)
  • Where can I find statistics describing schools in the county?
  • How many acres of parkland and preserved farms are in Mercer County?
    • Preserved Open Space – approximately  28,454 acres (December 2017)
    • Preserved farmland – 7,957 acres (December 2017)
    • Mercer County Park Commission Facilities – 6,370 acres
  • How many low- and moderate-income qualified housing units are there countywide?
    • Approximately 7,992 total completed and proposed low- and moderate-income housing units (2016). Additional information can be found on Affordable Housing Online website.
  • How long is the average work trip?
    • 28.7 minutes  (ACS 2016 Year Estimates)
  • What percentage of county residents drive alone to work?
    • Approximately 76.4% (2016 ACS 1 Year Estimates)
    • To access additional county and municipal census and demographic data, please visit the State Data Center website.

Census Site QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.