Mercer County, New Jersey Population 2024

382,563

Mercer County, New Jersey's estimated 2024 population is 382,563 with a growth rate of 0.23% in the past year according to the most recent United States census data. Mercer County, New Jersey is the 12th largest county in New Jersey. The 2010 population was 367,717 and has seen a growth of 4.04% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
2029387,0238920.23%
2028386,1318920.23%
2027385,2398920.23%
2026384,3478920.23%
2025383,4558920.23%
2024382,5638920.23%
2023381,6718920.23%
2022380,779-1,393-0.36%
2021382,172-4,294-1.11%
2020386,46618,4195%
2019368,047-673-0.18%
2018368,7202310.06%
2017368,4895600.15%
2016367,929-337-0.09%
2015368,266-765-0.21%
2014369,031-503-0.14%
2013369,5349060.25%
2012368,6281,2210.33%
2011367,407-310-0.08%
2010367,71700%
1990325,82417,9615.83%
1980307,8633,8951.28%
1970303,96837,57614.11%
1960266,39236,61115.93%
1950229,78132,46316.45%
1940197,31810,1755.44%
1930187,14327,26217.05%
1920159,88134,22427.24%
1910125,65730,29231.76%
190095,36515,38719.24%
189079,97821,91737.75%
188058,06111,67525.17%
187046,3868,96723.96%
186037,4199,42733.68%
185027,9926,49030.18%
184021,502-365,521-94.44%
2024 Growth Rate
0.23% (892)
County Website
Mercer County
2020 Population
386,466
Area
224 mi²
Density
1708 people/mi²
Growth Since 2020
-1.01% (-3,903)
Founded
1838

Population by Race

Race
Population
Percentage (of total)
White206,31453.77%
Black or African American75,62419.71%
Asian46,76212.19%
Two or more races26,9647.03%
Other race26,9497.02%
Native American1,0200.27%
Native Hawaiian or Pacific Islander990.03%

White

Black or African American

Asian

Two or more races

Other race

Native American

Native Hawaiian or Pacific Islander

Mercer County, New Jersey Population by Race

Mercer County, New Jersey Population Pyramid 2024

Mercer County, New Jersey Median Age

39.3

Total

37.8

Male

40.7

Female

Mercer County, New Jersey Adults

There are 301,561 adults, (60,075 of whom are seniors) in Mercer County, New Jersey.

Mercer County, New Jersey Age Dependency

58.9

Age Dependency Ratio

24.9

Old Age Dependency Ratio

34

Child Dependency Ratio

Mercer County, New Jersey Sex Ratio

Female194,23750.62%
Male189,49549.38%

Mercer County, New Jersey Population by Age

Mercer County, New Jersey Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All139,5492.6262.837.2
Married66,4223.3679.120.9
Non Family47,8071.2246.453.6
Female18,3013.3149.650.4
Male7,0193.354.545.5

3.26

Average Family Size

2.62

Average Household Size

62.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Mercer County, New Jersey Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade14,7645.68%
Associates Degree15,5215.97%
Bachelors Degree62,30623.97%
Graduate Degree52,47220.18%
High School Graduate65,91125.35%
Less Than 9th Grade11,9424.59%
Some College37,04314.25%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Mercer County, New Jersey Educational Attainment by Sex (over 25)

Mercer County, New Jersey Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White133,224128,26569,296
Black50,42243,61011,423
Hispanic41,87428,8847,597
Asian31,08729,15724,584
Other Race15,5158,9382,222
2+ Races13,90011,3684,363
Native American530421155
Islander928140

The highest rate of high school graduation is among white people with a rate of 96.28%.

The highest rate of bachelors degrees is among asian people with a rate of 79.08%.

Mercer County, New Jersey Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$74,140$87,107$64,329
Graduate Degree$105,171$129,136$88,426
High School Graduate$35,963$40,195$32,493
Less Than 9th Grade$32,127$34,646$25,709
Overall$57,625$64,982$50,863
Some College$48,113$52,478$42,667

$57,625

Average Earnings

$64,982

Average Male

$50,863

Average Female

Mercer County, New Jersey Earnings by Educational Attainment

Mercer County, New Jersey Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Mercer County, New Jersey Language

67.23% of Mercer County, New Jersey residents speak only English, while 32.77% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 16.3% of the population.

Mercer County, New Jersey Language

Mercer County, New Jersey Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
Black72,20114,33919.86%
Hispanic71,06412,01716.91%
White170,81110,4326.11%
Other26,4385,04519.08%
Multiple25,7434,04315.71%
Asian43,9482,9756.77%
Native99914814.81%
Islander991111.11%

11.22%

Overall Poverty Rate

9.72%

Male Poverty Rate

12.69%

Female Poverty Rate

Poverty in Mercer County, New Jersey

The race most likely to be in poverty in Mercer County, New Jersey is Black, with 19.86% below the poverty level.

The race least likely to be in poverty in Mercer County, New Jersey is White, with 6.11% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.72%. Among those working part-time, it was 12.22%, and for those that did not work, the poverty rate was 20.93%.

Mercer County, New Jersey Poverty

rate

Rate
Poverty
Less Than 9th Grade27.05%
High School14.73%
Some College8.62%
Bachelors or Greater3.96%

Mercer County, New Jersey Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed26.6%
Male Unemployed20.27%
Female Employed5.13%
Male Employed3.55%

Mercer County, New Jersey Poverty Rate by Employment Status and Sex

Mercer County, New Jersey Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$120,093$164,874
Households$92,697$133,816
Married Families$144,720$195,944
Non Families$49,095$68,788

mean

median

Income by Household Type

Mercer County, New Jersey Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

46.3%

Overall Marriage Rate

49.1%

Male Marriage Rate

43.7%

Female Marriage Rate

Mercer County, New Jersey Married by Age and Sex

male

female

Mercer County, New Jersey Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Mercer County, New Jersey Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Mercer County, New Jersey Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

11,286

Number of Veterans

10,598

Male Veterans

688

Female Veterans

War
Veterans
Vietnam3,833
Second Gulf War2,070
First Gulf War1,720
Korea822
World War II312

Mercer County, New Jersey Veterans by War

count

Age Group
Veterans
75+3,301
65 to 742,617
35 to 542,580
55 to 642,183
18 to 34605

Mercer County, New Jersey Veterans by Age

count

Name
Veterans
% of Total
White7,9274.63%
Black2,5504.38%
Hispanic9931.98%
Other Race3391.92%
2+ Races3221.86%
Asian1150.32%
Native American182.64%
Islander1516.3%

Mercer County, New Jersey Veterans by Race

Mercer County, New Jersey Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

9.84%

Veteran Poverty Rate

30.14%

Veteran Disability Rate

Mercer County, New Jersey Veterans by Education

LaborForceParticipation

63.8%

Labor Force Participation

59.9%

Employment Rate

6.1%

Unemployment Rate

Mercer County, New Jersey Employment by Age

LaborForceParticipation

Mercer County, New Jersey Employment by Race

LaborForceParticipation

Mercer County, New Jersey Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

50.39%

Born in Mercer County, New Jersey

75.41%

Native Born

24.59%

Foreign Born

12.51%

Non Citizen

12.07%

Naturalized

Place of Birth

75.41% of Mercer County, New Jersey residents were born in the United States, with 50.39% having been born in New Jersey. 12.51% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Mercer County, New Jersey Place of Birth

Sources