Mercer County, New Jersey
Population estimates, July 1, 2025, (V2025) 399,289
People
Population
Population estimates, July 1, 2025, (V2025) 399,289
Population estimates, July 1, 2024, (V2024) 392,138
Population estimates base, April 1, 2020, (V2025) 387,334
Population estimates base, April 1, 2020, (V2024) 387,333
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) 3.1%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) 1.2%
Population, Census, April 1, 2020 387,340
Population, Census, April 1, 2010 366,513
Age and Sex
Persons under 5 years, percent 5.6%
Persons under 18 years, percent 22.0%
Persons 65 years and over, percent 16.6%
Female persons, percent 50.6%
Race and Hispanic Origin
White alone, percent 60.5%
Black alone, percent(a) 21.5%
American Indian and Alaska Native alone, percent(a) 1.3%
Asian alone, percent(a) 13.6%
Native Hawaiian and Other Pacific Islander alone, percent(a) 0.3%
Two or More Races, percent 2.8%
Hispanic or Latino, percent(b) 24.6%
White alone, not Hispanic or Latino, percent 41.4%
Population Characteristics
Veterans, 2020-2024 10,176
Foreign-born persons, percent, 2020-2024 27.0%
Housing
Housing Units, July 1, 2025, (V2025) 152,739
Owner-occupied housing unit rate, 2020-2024 62.2%
Median value of owner-occupied housing units, 2020-2024 $377,700
Median selected monthly owner costs - with a mortgage, 2020-2024 $2,615
Median selected monthly owner costs - without a mortage, 2020-2024 $1,136
Median gross rent, 2020-2024 $1,623
Building Permits, 2025 1,164
Families & Living Arrangements
Households, 2020-2024 144,114
Persons per household, 2020-2024 2.56
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 88.0%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 35.7%
Computer and Internet Use
Households with a computer, percent, 2020-2024 95.6%
Households with a broadband Internet subscription, percent, 2020-2024 91.4%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 89.4%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 45.4%
Health
With a disability, under age 65 years, percent, 2020-2024 7.3%
Persons without health insurance, under age 65 years, percent 10.0%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 65.2%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 61.0%
Total accommodation and food services sales, 2022 ($1,000)(c) 1,057,438
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) 4,813,671
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 750,736
Total retail sales, 2022 ($1,000)(c) 8,690,931
Total retail sales per capita, 2022(c) $22,824
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 27.1
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $100,645
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $53,765
Persons in poverty, percent 10.0%
Businesses
Businesses
Total employer establishments, 2023 9,683
Total employment, 2023 208,192
Total annual payroll, 2023 ($1,000) 17,984,465
Total employment, percent change, 2022-2023 3.9%
Total nonemployer establishments, 2023 32,798
All employer firms, Reference year 2023 7,547
Male-owned employer firms, Reference year 2023 4,297
Female-owned employer firms, Reference year 2023 1,543
Minority-owned employer firms, Reference year 2023 2,325
Nonminority-owned employer firms, Reference year 2023 4,148
Veteran-owned employer firms, Reference year 2023 S
Nonveteran-owned employer firms, Reference year 2023 6,386
Geography
Geography
Population per square mile, 2020 1,725.8
Population per square mile, 2010 1,632.2
Land area in square miles, 2020 224.44
Land area in square miles, 2010 224.56
FIPS Code 34021