Middlesex County, New Jersey Population 2021

Middlesex County, New Jersey's estimated population is 822,842 with a growth rate of -0.13% in the past year according to the most recent United States census data. Middlesex County, New Jersey is the null largest county in New Jersey. The 2010 Population was 810,758 and has seen a growth of 1.49% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
2021822,842-1,110-0.13%
2020823,952-1,110-0.13%
2019825,062-1,110-0.13%
2018826,172-1,191-0.14%
2017827,3631,9060.23%
2016825,457-89-0.01%
2015825,5461,3860.17%
2014824,1602,4170.29%
2013821,7432,3990.29%
2012819,3444,1460.51%
2011815,1984,4400.55%
2010810,758138,97820.69%
1990671,78075,88712.74%
1980595,89312,0802.07%
1970583,813149,95734.56%
1960433,856168,98463.80%
1950264,87247,79522.02%
1940217,0774,8692.29%
1930212,20849,87430.72%
1920162,33447,90841.87%
1910114,42634,66443.46%
190079,76218,00829.16%
189061,7549,46818.11%
188052,2867,25716.12%
187045,02910,21729.35%
186034,8126,17721.57%
185028,6356,74230.80%
184021,893-1,264-5.46%
183023,1571,6877.86%
182021,4701,0895.34%
181020,3812,49113.92%
180017,8901,93412.12%
179015,9560.00%
2021 Growth Rate
-0.13%
County Website
Founded
1683
County Seat
2010 Population
810,758
Growth Since 2010
1.49%
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Middlesex County, New Jersey Population Growth

Population by Race

Race Population Percentage
White478,17457.90%
Asian198,42624.02%
Black or African American85,48110.35%
Some Other Race37,3094.52%
Two or More Races24,3332.95%
American Indian and Alaska Native1,8760.23%
Native Hawaiian and Other Pacific Islander3210.04%
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Middlesex County, New Jersey Population By Race

Middlesex County, New Jersey Population Pyramid 2021

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Middlesex County, New Jersey Median Age

38.6


Total

37.5


Male

39.7


Female

Middlesex County, New Jersey Adults

There are 645,442 adults, (121,213 of whom are seniors) in Middlesex County, New Jersey.

Middlesex County, New Jersey Age Dependency

57.5

Age Dependency Ratio

23.1

Old Age Dependency Ratio

34.4

Child Dependency Ratio

Middlesex County, New Jersey Sex Ratio

Mujer

418,750

50.70%

Masculino

407,170

49.30%

Middlesex County, New Jersey Population by Age

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

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Middlesex County, New Jersey Household Types

Type Owner Renter
Married74.4%25.6%
All63.5%36.5%
Non Family49.6%50.4%
Mujer49.3%50.7%
Masculino45.6%54.4%

63.5%

Rate of Home Ownership

Middlesex County, New Jersey Households and Families

Type Count Average Size Owned
All285,0052.7963.5
Married162,2543.3774.4
Non Family75,7621.2449.6
Mujer32,8603.3349.3
Masculino14,1293.3345.6

3.3

Average Family Size

2.79

Average Household Size

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Middlesex County, New Jersey Households by Type

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Education Attained Count Percentage
Less Than 9th Grade28,3504.99%
9th to 12th Grade29,4845.19%
High School Graduate143,64725.29%
Some College83,96014.78%
Associates Degree35,0936.18%
Bachelors Degree146,45625.79%
Graduate Degree100,92317.77%
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Middlesex County, New Jersey Educational Attainment by Sex (over 25)

Middlesex County, New Jersey Educational Attainment by Race

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Race Total High School Bachelors
White269,696252,371107,559
Asian133,730123,92298,719
Hispanic102,86476,94118,733
Black56,41152,27519,397
Other Race23,00417,6744,131
2+ Races10,8569,1604,671
Native American1,210940397
Islander17614033

The highest rate of high school graduation is among white people with a rate of 93.58%.

The highest rate of bachelors degrees is among asian people with a rate of 73.82%.

Middlesex County, New Jersey Educational Attainment by Race

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Name Average Masculino Mujer
Overall$53,360$63,920$42,979
Less Than 9th Grade$27,066$32,440$20,432
High School Graduate$37,031$45,093$29,979
Some College$45,468$53,774$37,712
Bachelors Degree$65,451$80,727$54,872
Graduate Degree$91,266$108,692$70,469

$53,360

Average Earnings

$63,920

Average Male

$42,979

Average Female

Middlesex County, New Jersey Earnings by Educational Attainment

Middlesex County, New Jersey Language by Age

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Middlesex County, New Jersey Language

55.47% of Middlesex County, New Jersey residents speak only English, while 44.53% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 17.09% of the population.

Middlesex County, New Jersey Language

Middlesex County, New Jersey Poverty by Race

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Name Total In Poverty Poverty Rate
Hispanic171,51726,37015.37%
White343,91720,8856.07%
Asian190,43210,9935.77%
Black79,6898,88911.15%
Other37,2185,64415.16%
Multiple23,9122,3229.71%
Native1,863532.84%
Islander263207.60%

8.49%

Overall Poverty Rate

7.48%

Male Poverty Rate

9.47%

Female Poverty Rate

Poverty in Middlesex County, New Jersey

The race most likely to be in poverty in Middlesex County, New Jersey is Hispanic, with 15.37% below the poverty level.

The race least likely to be in poverty in Middlesex County, New Jersey is Native, with 2.84% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.61%. Among those working part-time, it was 10.00%, and for those that did not work, the poverty rate was 15.39%.

Middlesex County, New Jersey Poverty

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Name Poverty
Less Than 9th Grade18.48%
High School9.30%
Some College6.09%
Bachelors or Greater3.31%

Middlesex County, New Jersey Poverty Rate by Education

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Name Poverty
Male Unemployed16.04%
Female Unemployed15.67%
Female Employed4.59%
Male Employed3.17%

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

Middlesex County, New Jersey Income by Household Type

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Name Median Mean
Households$89,533$112,274
Families$107,149$128,656
Married Families$122,617$144,172
Non Families$47,562$62,757
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Income by Household Type

Middlesex County, New Jersey Marital Status

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Marriage Rates

52.9%

Overall Marriage Rate

55.0%

Male Marriage Rate

50.9%

Female Marriage Rate

Middlesex County, New Jersey Married by Age and Sex

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Middlesex County, New Jersey Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Middlesex County, New Jersey Marital Status by Race

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Middlesex County, New Jersey Marital Status

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24,709

Number of Veterans

23,411

Male Veterans

1,298

Female Veterans

War Veterans
Vietnam8,806
Second Gulf War3,492
Korea3,017
First Gulf War2,658
World War II1,635

Middlesex County, New Jersey Veterans by War

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Age Group Veterans
75+8,489
65 to 747,232
35 to 543,849
55 to 643,330
18 to 341,809

Middlesex County, New Jersey Veterans by Age

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Name Veterans % of Total
White20,3005.24%
Hispanic3,0702.51%
Black2,4053.63%
Asian8660.58%
Other Race6722.53%
2+ Races3752.77%
Native American695.14%
Islander228.37%

Middlesex County, New Jersey Veterans by Race

Middlesex County, New Jersey Veterans by Education

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4.42%

Veteran Poverty Rate

30.64%

Veteran Disability Rate

Middlesex County, New Jersey Veterans by Education

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64.4%

Labor Force Participation

61.1%

Employment Rate

5.2%

Unemployment Rate

Middlesex County, New Jersey Employment by Age

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Middlesex County, New Jersey Employment by Race

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Middlesex County, New Jersey Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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46.57%

Born in Middlesex County, New Jersey

67.16%

Native Born

32.84%

Foreign Born

14.24%

Non Citizen

18.60%

Naturalized

Place of Birth

67.16% of Middlesex County, New Jersey residents were born in the United States, with 46.57% having been born in New Jersey. 14.24% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Middlesex County, New Jersey Place of Birth

  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

Sources