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COUNTY

Middlesex County

New Jersey · 883,335 residents (2025 est.) · 309 sq mi
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Part of the New York metro area
The short version

Middlesex County is a county of 871,290 people in New Jersey. The foreign-born share is 35%. That puts it in the top 1% of US counties for household income. 46% of adults hold a bachelor's degree or higher. There are 2,817 people per square mile. Median household income runs $111,549, well clear of the $82,259 US median.

At a glance
Wealthier
median household income $111,549, above the US median
US median: $82,259
Mid-age
median age 39.5
US median: 38.9
More educated
46% hold a bachelor's degree
US average: 36%
Less affordable
home values up 55%, inflation adjusted
US median home: $376,019
Unique to this place

What stands out about Middlesex County

What changed most since 1990

  • White share77.3% → 37.5% (−39.8 pts)US over the same years: −17.8 pts
  • Asian share6.5% → 25.4% (+18.9 pts)US over the same years: +3.1 pts
  • Median home value (2024 dollars)$393,851 → $462,900 (+18%)US over the same years: +67%

Among the 21 counties in New Jersey

  • 7th in household income$111,549
  • 7th in share with a bachelor's degree45.6%
  • 9th in home value$462,900
  • 2nd in diversity score91.0
Section 01

Population & growth

Total population
871,290
+16%since 2000
from 750,162 in 2000
883,335 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
2,817 / sq mi
+16%since 2000
from 2,426 / sq mi in 2000
US average: 281
Median age
39.5
+11%since 2000
from 35.7 in 2000
US average: 38.9
Land area
309 sq mi
Population, 1990 – 2024
652K712K772K831K891K19902000201020202024Middlesex County
2024871K
1990201020202024
Age distribution, 2024
Under 55.3%(46,534)
US avg: 5.6%
5 to 95.8%(50,726)
US avg: 6%
10 to 146.4%(55,694)
US avg: 6.4%
15 to 196.9%(60,320)
US avg: 6.6%
20 to 246.4%(56,111)
US avg: 6.5%
25 to 3412.9%(112,594)
US avg: 13.7%
35 to 4413.9%(121,504)
US avg: 13.2%
45 to 5413.2%(115,042)
US avg: 12.2%
55 to 6412.9%(112,207)
US avg: 12.7%
65 to 749.6%(83,313)
US avg: 10.2%
75 to 844.8%(41,810)
US avg: 5.1%
85 and over1.8%(15,435)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$111,549
Unchangedinflation adjusted, since 2000
from $61,446 in 2000
US average: $82,259
1990 – 2024
Per capita income
$50,601
+91%since 2000
from $26,535 in 2000
US average: $44,673
Households earning $100K+
66.7%
+15.8 ptssince 2009
from 50.9% in 2009
US average: 53.3%
Poverty rate
8.6%
+2.0 ptssince 2000
from 6.6% in 2000
US average: 12.5%
Income inequality (Gini)
0.437
+7%since 2010
from 0.407 in 2010
US average: 0.476
Workforce by industry, 2024
Information10.3%
US avg: 10.8%
Retail trade9.5%
US avg: 9.9%
Other services9.4%
US avg: 6.7%
Finance & insurance8.1%
US avg: 5.9%
Public administration7.8%
US avg: 4.8%
Professional, scientific, technical7.4%
US avg: 5.1%
Wholesale trade4.7%
US avg: 6.9%
Transportation & warehousing3.2%
US avg: 2.2%
Arts, entertainment, food2.5%
US avg: 1.9%
Education & health services0.6%
US avg: 0.9%
Agriculture, forestry, fishing0.2%
US avg: 1.6%
Construction0.1%
US avg: 1.2%
Manufacturing0%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$462,900
+55%inflation adjusted, since 2000
from $164,400 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,871
+22%inflation adjusted, since 2000
from $845 in 2000
US average: $1,442
Owner-occupied
63.6%
−3.1 ptssince 2000
from 66.7% in 2000
36.4% rent
Vacancy rate
3.2%
−2.0 ptssince 2009
from 5.2% in 2009
US average: 10.0%
Persons per household
2.75 people
−1%since 2009
from 2.77 people in 2009
US average: 2.54
Owner cost-burdened
28.3%
−9.8 ptssince 2009
from 38.1% in 2009
US average: 22.9%
Renter cost-burdened
46.0%
+3.5 ptssince 2009
from 42.4% in 2009
US average: 47.4%
Afford Score
4.1
−11%since 2009
from 4.6 in 2009
1990 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
33
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic61.9%(464,537)
Black8.6%(64,435)
Hispanic / Latino13.6%(101,940)
Asian13.8%(103,788)
Other0%
2024
White, non-Hispanic37.5%(326,790)
Black9.7%(84,565)
Hispanic / Latino23.6%(205,792)
Asian25.4%(221,341)
Other3.8%(32,802)
Diversity Score
91
+14%since 2009
from 80 in 2009
1990 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
37
Unchangedsince 2020
from 37 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Dominican6.1%(52,714)
Puerto Rican5%(43,623)
South American4.4%(38,217)
Mexican3.3%(28,808)
Colombian1.4%(12,427)
Honduran1.3%(11,159)
Peruvian1.3%(10,978)
Ecuadorian1%(8,991)
Salvadoran0.7%(6,342)
Cuban0.7%(5,722)
Guatemalan0.4%(3,669)
+ 10 more hispanic origin groups with data
Spaniard0.3%(2,388)
Venezuelan0.2%(1,968)
Costa Rican0.2%(1,727)
Argentine0.2%(1,595)
Panamanian0.2%(1,457)
Nicaraguan0.2%(1,430)
Chilean0.1%(971)
Uruguayan0.1%(781)
Bolivian0%(293)
Paraguayan0%(171)
Asian origin
Asian Indian16.9%(147,082)
Chinese3%(26,124)
Filipino1.6%(14,151)
Pakistani1.5%(13,295)
Korean0.7%(6,008)
Vietnamese0.3%(2,994)
Taiwanese0.2%(2,108)
Sri Lankan0.2%(1,824)
Nepalese0.2%(1,490)
Bangladeshi0.1%(988)
Indonesian0.1%(711)
Japanese0.1%(612)
+ 9 more asian origin groups with data
Thai0%(235)
Kazakh0%(222)
Burmese0%(149)
Malaysian0%(134)
Mongolian0%(54)
Cambodian0%(45)
Uzbek0%(20)
Laotian0%(16)
Pacific Islander origin
Chamorro0%(332)
Fijian0%(28)
Samoan0%(17)
Ancestry
Italian9.8%(85,140)
Irish7.8%(67,764)
German4.9%(42,675)
Polish4.7%(41,089)
American2.4%(20,933)
English2.3%(20,088)
West Indian1.8%(16,009)
Russian1.5%(13,074)
Arab1.5%(12,874)
Subsaharan African1.5%(12,677)
Hungarian1.3%(11,331)
Egyptian1%(8,367)
+ 50 more ancestry groups with data
Portuguese0.9%(8,099)
Ukrainian0.9%(7,481)
Jamaican0.8%(6,664)
French0.6%(5,203)
Greek0.6%(4,858)
Scottish0.5%(4,470)
Haitian0.4%(3,463)
Ghanaian0.4%(3,117)
Slovak0.3%(3,045)
Nigerian0.3%(2,946)
Guyanese0.3%(2,671)
Dutch0.3%(2,525)
Austrian0.3%(2,434)
Brazilian0.3%(2,192)
Norwegian0.2%(2,160)
Swedish0.2%(2,156)
Lithuanian0.2%(1,867)
Danish0.2%(1,662)
Scotch-Irish0.2%(1,500)
Turkish0.2%(1,397)
Lebanese0.1%(1,203)
Romanian0.1%(1,121)
Welsh0.1%(1,119)
Czech0.1%(1,079)
Macedonian0.1%(917)
British0.1%(909)
Iranian0.1%(843)
Belgian0.1%(721)
Moroccan0.1%(719)
Swiss0.1%(639)
Palestinian0.1%(632)
Ethiopian0.1%(619)
Barbadian0.1%(605)
Canadian0.1%(587)
Syrian0.1%(529)
Croatian0%(369)
Latvian0%(339)
Israeli0%(295)
Kenyan0%(259)
Serbian0%(247)
Finnish0%(238)
Jordanian0%(223)
Iraqi0%(212)
Armenian0%(170)
Bulgarian0%(157)
Slovene0%(69)
Section 05

Education

Bachelor's degree or higher
45.6%
+12.6 ptssince 2000
from 33.0% in 2000
US average: 35.6%
High school or higher
89.2%
+4.9 ptssince 2000
from 84.4% in 2000
US average: 89.6%
Graduate degree
19.4%
+6.9 ptssince 2000
from 12.5% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
31.2 min
+35%since 2000
from 23.1 min in 2000
US average: 26.5
Drive alone to work
61.3%
−12.0 ptssince 2009
from 73.3% in 2009
US average: 68.9%
Carpooled to work
8.1%
−1.4 ptssince 2009
from 9.5% in 2009
US average: 8.5%
Public transit
5.9%
−3.7 ptssince 2009
from 9.6% in 2009
US average: 3.2%
Worked from home
18.1%
+14.9 ptssince 2009
from 3.1% in 2009
US average: 15.0%
Walked to work
2.9%
−0.4 ptssince 2009
from 3.3% in 2009
US average: 2.4%
Biked to work
0.3%
Unchangedsince 2009
from 0.2% in 2009
US average: 0.4%
No vehicle available
8.0%
−0.4 ptssince 2009
from 8.4% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
6.7%
−1.2 ptssince 2011
from 7.9% in 2011
US average: 5.2%
Labor force participation
67.2%
+0.3 ptssince 2011
from 66.9% in 2011
US average: 63.5%
Women 20-64 in the labor force
77.5%
+3.8 ptssince 2020
from 73.7% in 2020
US average: 74.6%
Self-employed
12.8%
+0.2 ptssince 2009
from 12.6% in 2009
US average: 13.1%
Management & professional
49.5%
+7.1 ptssince 2009
from 42.4% in 2009
US average: 42.5%
Section 08

People & community

Male
49.7%
+0.3 ptssince 2009
from 49.4% in 2009
Female
50.3%
−0.3 ptssince 2009
from 50.6% in 2009
Foreign born
35.4%
+7.8 ptssince 2009
from 27.6% in 2009
US average: 14.1%
Veterans
3.0%
−3.8 ptssince 2009
from 6.8% in 2009
US average: 6.2%
With a disability
10.0%
+1.7 ptssince 2012
from 8.3% in 2012
US average: 13.3%
Uninsured
7.2%
−5.8 ptssince 2013
from 13.0% in 2013
US average: 8.4%
Broadband at home
94.3%
+10.9 ptssince 2017
from 83.4% in 2017
US average: 91.0%
Computer in household
96.5%
+3.0 ptssince 2020
from 93.5% in 2020
US average: 95.5%
Same house as last year
89.6%
+0.4 ptssince 2020
from 89.3% in 2020
US average: 87.7%
English only at home
52.6%
−4.7 ptssince 2016
from 57.3% in 2016
US average: 77.7%
Spanish at home
18.4%
+2.3 ptssince 2016
from 16.1% in 2016
US average: 13.6%
Marital status
Men 15+
Never married36.5%(129,433)
Married55.2%(195,712)
Widowed2.1%(7,483)
Divorced6.2%(21,863)
Women 15+
Never married31.4%(114,219)
Married51.4%(187,027)
Widowed8%(28,973)
Divorced9.2%(33,626)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
7.2%
−5.8 ptssince 2013
from 13.0% in 2013
US average: 8.4%
Employer-based
63.9%
−2.4 ptssince 2020
from 66.3% in 2020
US average: 54.8%
Direct-purchase
11.9%
−0.7 ptssince 2020
from 12.6% in 2020
US average: 13.8%
Medicare
16.1%
+0.6 ptssince 2020
from 15.5% in 2020
US average: 18.4%
Medicaid
15.8%
+2.2 ptssince 2020
from 13.6% in 2020
US average: 20.9%
VA health care
0.7%
−0.1 ptssince 2020
from 0.8% in 2020
US average: 2.2%
Any private
73.3%
−3.3 ptssince 2020
from 76.6% in 2020
US average: 67.1%
Any public
29.5%
+2.8 ptssince 2020
from 26.7% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)23.5%(4,843)
US avg: 26.4%
Gulf War (1990s)12.4%(2,555)
US avg: 24.3%
Vietnam era36.4%(7,501)
US avg: 33.1%
Korean War7.1%(1,471)
US avg: 4.5%
World War II0.9%(179)
US avg: 1%

Share of the 20,594 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time

Middlesex County, decade by decade

Middlesex County population, inflation-adjusted income and home value, education, and diversity by year
YearPopulationMedian household incomeMedian home valueBachelor's degree+Diversity score
1990671,780$109,498$393,85126.5%48.2
2000750,162$111,933$299,48033.0%71.4
2010809,858$111,655$512,13138.4%83.8
2020863,162$111,182$425,91044.4%90.2
2024871,290$111,549$462,90045.6%91.0

Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.

Drill deeper

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Pop 870,656
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Pop 877,643
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Pop 934,298
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Pop 830,851
Places similar to Middlesex County
Head to head

Compare Middlesex County to nearby counties

MIDDLESEX COUNTY VS
Somerset County
Income$140,374+26%
Home value$552,100+19%
Population356,486−60%
SEE FULL COMPARISON →
MIDDLESEX COUNTY VS
Union County
Income$103,202−7%
Home value$529,200+14%
Population601,863−32%
SEE FULL COMPARISON →
MIDDLESEX COUNTY VS
Richmond County
Income$98,333−12%
Home value$675,500+46%
Population501,290−43%
SEE FULL COMPARISON →
MIDDLESEX COUNTY VS
Monmouth County
Income$124,845+12%
Home value$606,100+31%
Population651,035−26%
SEE FULL COMPARISON →
Frequently asked

How many people live in Middlesex County, New Jersey?

Middlesex County, New Jersey has about 871,290 residents according to the 2024 American Community Survey.

What is the median household income in Middlesex County, New Jersey?

The typical household in Middlesex County, New Jersey earns about $111,549 a year. Half of households make more than that, and half make less.

Is Middlesex County, New Jersey expensive?

In Middlesex County, New Jersey, the median home is worth about $462,900, and the typical rent is about $1,871 a month.

How educated are people in Middlesex County, New Jersey?

About 45.6% of adults age 25 and over in Middlesex County, New Jersey hold a bachelor's degree or higher.

What is the poverty rate in Middlesex County, New Jersey?

About 8.6% of people in Middlesex County, New Jersey live below the federal poverty line.

Has Middlesex County, New Jersey grown since 1990?

Yes, Middlesex County, New Jersey has grown since 1990. The population has added about 199,510 residents, a change of about 30 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →