Mercer County, New Jersey Population 2019

Mercer County, New Jersey's estimated population is 368,602 with a growth rate of 0.16% 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.

Year Population Growth Growth Rate
2018369,8111,2090.33%
2017368,6025740.16%
2016368,028-324-0.09%
2015368,352-665-0.18%
2014369,017-500-0.14%
2013369,5179130.25%
2012368,6041,2200.33%
2011367,384-360-0.10%
2010367,74441,92012.87%
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%
184021,5020.00%

How Many People Live in Mercer County, New Jersey?

368,602

Population by Race

Race Population Percentage
White236,82663.43%
Black or African American76,55920.51%
Asian40,01210.72%
Some Other Race11,8403.17%
Two or More Races7,6732.06%
American Indian and Alaska Native3220.09%
Native Hawaiian and Other Pacific Islander1300.03%

Mercer County, New Jersey Population Pyramid 2019

Mercer County, New Jersey Median Age

38.6


Total

36.9


Male

40


Female

Mercer County, New Jersey Adults

There are 292,953 adults, (52,772 of whom are seniors) in Mercer County, New Jersey.

Mercer County, New Jersey Age Dependency

55.5

Age Dependency Ratio

22

Old Age Dependency Ratio

33.5

Child Dependency Ratio

Mercer County, New Jersey Sex Ratio

Female

190,669

51.07%

Male

182,693

48.93%

Mercer County, New Jersey Households and Families

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

Mercer County, New Jersey Household Types

Type Owner Renter
Married80.5%19.5%
All64.2%35.8%
Male54.6%45.4%
Non Family47.8%52.2%
Female46.5%53.5%

64.2%

Rate of Home Ownership

Type Count Average Size Owned
All129,5462.7564.2
Married64,5443.3780.5
Non Family41,5541.2947.8
Female17,5713.6446.5
Male5,8773.5154.6

3.35

Average Family Size

2.75

Average Household Size

4%

Unmarried (Opposite Sex)

0.2%

Unmarried (Same Sex)

Mercer County, New Jersey Education

Education Attained Count Percentage
Less Than 9th Grade14,3925.76%
9th to 12th Grade15,9606.38%
High School Graduate61,58724.63%
Some College40,31416.12%
Associates Degree14,0565.62%
Bachelors Degree53,95321.58%
Graduate Degree49,77219.91%

Mercer County, New Jersey Educational Attainment by Race

Name Total High School Bachelors
White137,622130,11867,854
Black48,48540,9188,735
Hispanic36,14522,4665,545
Asian26,15924,54120,520
Other Race7,4304,481971
Multiple Races2,8682,4961,164
Native American25717037
Islander784814

The highest rate of high school graduation is among white people with a rate of 94.55%.

The highest rate of bachelors degrees is among asian people with a rate of 78.44%.

Name Average Male Female
Overall$48,046$53,772$41,281
Less Than High School$20,481$21,947$16,806
High School Grad$31,527$35,159$28,370
Some College$41,618$45,874$38,052
Bachelors Degree$65,438$78,613$54,886
Graduate Degree$87,539$113,121$67,086

$48,046

Average Earnings

$53,772

Average Male

$41,281

Average Female

Mercer County, New Jersey Language

Mercer County, New Jersey Language by Age

Mercer County, New Jersey Language

70.28% of Mercer County, New Jersey residents speak only English, while 29.72% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 14.15% of the population.

Mercer County, New Jersey Poverty

Mercer County, New Jersey Poverty by Race

Name Total In Poverty Poverty Rate
Black72,70014,51319.96%
Hispanic61,28612,86821.00%
White180,72610,4545.78%
Other11,4792,39520.86%
Asian37,9772,3386.16%
Multiple7,1891,12415.63%
Islander1258164.80%
Native3107724.84%

11.35%

Overall Poverty Rate

10.34%

Male Poverty Rate

12.30%

Female Poverty Rate

Poverty in Mercer County, New Jersey

The race most likely to be in poverty in Mercer County, New Jersey is Islander, with 64.80% below the poverty level.

The race least likely to be in poverty in Mercer County, New Jersey is White, with 5.78% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.11%. Among those working part-time, it was 11.81%, and for those that did not work, the poverty rate was 19.95%.

Name Poverty
Less Than High School25.00%
High School12.70%
Some College8.24%
Bachelors or Greater3.82%
Name Poverty
Female Unemployed26.80%
Male Unemployed20.77%
Female Employed5.06%
Male Employed4.24%

Mercer County, New Jersey Income

Mercer County, New Jersey Income by Household Type

Name Median Mean
Households$77,027$111,137
Families$98,965$133,454
Married Families$121,225$158,554
Non Families$42,235$58,885

Mercer County, New Jersey Marital Status

Mercer County, New Jersey Marital Status

Marriage Rates

46.5%

Overall Marriage Rate

48.2%

Male Marriage Rate

44.9%

Female Marriage Rate

Mercer County, New Jersey Married by Age and Sex

Mercer County, New Jersey Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Mercer County, New Jersey Marital Status by Race

Mercer County, New Jersey Veterans

13,454

Number of Veterans

12,769

Male Veterans

685

Female Veterans

War Veterans
Vietnam4,862
First Gulf War1,683
Korea1,602
Second Gulf War1,352
World War II921
Age Group Veterans
75+4,152
65 to 743,624
35 to 542,588
55 to 642,449
18 to 34641

Mercer County, New Jersey Veterans by Race

Name Veterans % of Total
White10,0255.23%
Black3,0145.25%
Hispanic8531.95%
Other1491.72%
2 or More1353.26%
Asian960.31%
Indian3513.26%

Mercer County, New Jersey Veterans by Education

5.41%

Veteran Poverty Rate

27.46%

Veteran Disability Rate

Mercer County, New Jersey Employment Status

64.9%

Labor Force Participation

60%

Employment Rate

7.5%

Unemployment Rate

Mercer County, New Jersey Place of Birth

Origin of Non Citizens

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

Origin of Naturalized Citizens

52.05%

Born in New Jersey

77.79%

Native Born

22.21%

Foreign Born

12.00%

Non Citizen

Place of Birth

77.79% of Mercer County, New Jersey residents were born in the United States, with 52.05% having been born in New Jersey. 12.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Population of Cities in Mercer County, New Jersey

City 2010 Census 2016 Estimated Growth Growth Rate
Trenton8493784056-881-1.04%
Princeton285953124926549.28%
Hightstown55095503-6-0.11%
Pennington25712568-3-0.12%
Hopewell19321926-6-0.31%
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990