COUNTY · 1990 CENSUS
Middlesex County
New Jersey · 671,780 residents · 309.247 sq mi
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Part of the New York metro area
The short version
Middlesex County is significantly wealthier than the US average, with a median household income of $45,623. Population has declined 10% since 2000. Median home value is $164,100. Poverty is rare here, at 5.1% of residents.
At a glance
Wealthier
above the US median
US median: $30,130
Mid-age
median age 33.5
US median: 33.0
More educated
26% hold a bachelor's degree
US average: 20%
Less affordable
home values up 32%, inflation adjusted
US median home: $93,722
Section 01
Population & growth
Population, 1990 – 2024
2024871K
Age distribution, 1990
Under 56.7%(44,684)
5 to 95.9%(39,470)
10 to 145.5%(37,065)
15 to 196.7%(44,909)
20 to 248.6%(57,973)
25 to 3419.6%(131,543)
35 to 4415.6%(104,475)
45 to 5410.6%(71,535)
55 to 649.1%(61,285)
65 to 747.7%(51,428)
75 to 843.3%(22,103)
85 and over0.8%(5,310)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$45,623
−2%inflation adjusted, since 2000
vs $61,446 in 2000
US average: $30,130
1990 – 2024
Section 03
Housing
$164,100
+32%inflation adjusted, since 2000
vs $164,400 in 2000
US average: $93,722
1990 – 2024
RELATED:See current rent listings in Middlesex County on RentDataNow
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%
1990
White, non-Hispanic82%(550,566)
Black7.9%(52,901)
Hispanic / Latino8.6%(58,021)
Asian6.7%(44,783)
Other3.5%(23,530)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry
Detailed origin tables are available for 2024; showing 2024 data.
Hispanic origin
Dominican6.1%(52,714)
Puerto Rican5%(43,623)
South American4.4%(38,217)
Mexican3.3%(28,808)
Central American3%(25,839)
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)
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)
Trinidadian & Tobagonian0.2%(1,637)
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)
French Canadian0.1%(799)
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)
Australian0%(54)
Cape Verdean0%(28)
Section 05
Education
High school or higher
79.4%
−5.0 ptsvs 2000
vs 84.4% in 2000
US average: 75.2%
Section 06
Commute & transportation
Section 07
Work & employment
No data for the years selected.
Section 08
People & community
No data for the years selected.
Marital status (2024)
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
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Compare Middlesex County to nearby counties
MIDDLESEX COUNTY VS
Somerset County
Income$140,374+208%
Home value$552,100+236%
Population356,486−60%
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MIDDLESEX COUNTY VS
Union County
Income$103,202+126%
Home value$529,200+222%
Population601,863−32%
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MIDDLESEX COUNTY VS
Richmond County
Income$98,333+116%
Home value$675,500+312%
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MIDDLESEX COUNTY VS
Monmouth County
Income$124,845+174%
Home value$606,100+269%
Population651,035−26%
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Frequently asked
How many people live in Middlesex County, New Jersey?
Middlesex County, New Jersey has about 671,780 residents according to the 1990 Census.
What is the median household income in Middlesex County, New Jersey?
The typical household in Middlesex County, New Jersey earns about $45,623 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 $164,100, and the typical rent is about $667 a month.
How educated are people in Middlesex County, New Jersey?
About 26.5% 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 5.1% of people in Middlesex County, New Jersey live below the federal poverty line.
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192 census tracts (top 20 by population)
Census Tract 82.14Census Tract 70Census Tract 36.01Census Tract 62.08Census Tract 3Census Tract 85.04Census Tract 27.03Census Tract 84.03Census Tract 62.07Census Tract 56.02Census Tract 63Census Tract 15.04Census Tract 51Census Tract 62.05Census Tract 65Census Tract 25Census Tract 26.04Census Tract 77.02Census Tract 15.02Census Tract 236 ZIP codes (top 30 by population)
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All counties in New JerseyDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024