2017 Growth Rate
0.22%
County Website
State
Founded
1683
County Seat
New Brunswick[2]
Lat/Lng
Middlesex County, New Jersey's estimated population is 827,684 with a growth rate of 0.22% in the past year according to the most recent United States census data. Middlesex County, New Jersey is the 2nd largest county in New Jersey.
| Year | Population | Growth | Growth Rate |
| 2018 | 829,685 | 2,001 | 0.24% |
| 2017 | 827,684 | 1,777 | 0.22% |
| 2016 | 825,907 | 40 | 0.00% |
| 2015 | 825,867 | 1,518 | 0.18% |
| 2014 | 824,349 | 2,505 | 0.30% |
| 2013 | 821,844 | 2,497 | 0.30% |
| 2012 | 819,347 | 4,265 | 0.52% |
| 2011 | 815,082 | 4,416 | 0.54% |
| 2010 | 810,666 | 138,886 | 20.67% |
| 1990 | 671,780 | 75,887 | 12.74% |
| 1980 | 595,893 | 12,080 | 2.07% |
| 1970 | 583,813 | 149,957 | 34.56% |
| 1960 | 433,856 | 168,984 | 63.80% |
| 1950 | 264,872 | 47,795 | 22.02% |
| 1940 | 217,077 | 4,869 | 2.29% |
| 1930 | 212,208 | 49,874 | 30.72% |
| 1920 | 162,334 | 47,908 | 41.87% |
| 1910 | 114,426 | 34,664 | 43.46% |
| 1900 | 79,762 | 18,008 | 29.16% |
| 1890 | 61,754 | 9,468 | 18.11% |
| 1880 | 52,286 | 7,257 | 16.12% |
| 1870 | 45,029 | 10,217 | 29.35% |
| 1860 | 34,812 | 6,177 | 21.57% |
| 1850 | 28,635 | 6,742 | 30.80% |
| 1840 | 21,893 | -1,264 | -5.46% |
| 1830 | 23,157 | 1,687 | 7.86% |
| 1820 | 21,470 | 1,089 | 5.34% |
| 1810 | 20,381 | 2,491 | 13.92% |
| 1800 | 17,890 | 1,934 | 12.12% |
| 1790 | 15,956 | 0.00% |
| Race | Population | Percentage |
| White | 497,816 | 59.46% |
| Asian | 201,243 | 24.04% |
| Black or African American | 84,015 | 10.03% |
| Some Other Race | 32,125 | 3.84% |
| Two or More Races | 20,256 | 2.42% |
| American Indian and Alaska Native | 1,582 | 0.19% |
| Native Hawaiian and Other Pacific Islander | 251 | 0.03% |
38.1
37
39.2
There are 653,712 adults, (115,701 of whom are seniors) in Middlesex County, New Jersey.
Female
425,161
50.78%
Male
412,127
49.22%
| Type | Count | Average Size | Owned |
| All | 283,794 | 2.84 | 63.6 |
| Married | 160,274 | 3.42 | 74.3 |
| Non Family | 76,689 | 1.25 | 50.2 |
| Female | 33,513 | 3.4 | 48.4 |
| Male | 13,318 | 3.66 | 50.3 |
| Education Attained | Count | Percentage |
| Less Than 9th Grade | 31,619 | 5.52% |
| 9th to 12th Grade | 29,896 | 5.22% |
| High School Graduate | 147,854 | 25.81% |
| Some College | 86,612 | 15.12% |
| Associates Degree | 36,252 | 6.33% |
| Bachelors Degree | 142,318 | 24.84% |
| Graduate Degree | 98,366 | 17.17% |
| Name | Total | High School | Bachelors |
| White | 279,025 | 260,507 | 105,046 |
| Asian | 134,885 | 124,716 | 97,859 |
| Hispanic | 99,702 | 71,704 | 16,851 |
| Black | 54,393 | 50,311 | 18,528 |
| Other Race | 19,692 | 15,059 | 3,433 |
| Multiple Races | 9,382 | 7,957 | 3,495 |
| Native American | 980 | 778 | 356 |
| Islander | 95 | 95 | 32 |
The highest rate of high school graduation is among islander people with a rate of 100.00%.
The highest rate of bachelors degrees is among asian people with a rate of 72.55%.
$50,514
Average Earnings
$60,364
Average Male
$40,400
Average Female
56.92% of Middlesex County, New Jersey residents speak only English, while 43.08% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 16.22% of the population.
| Name | Total | In Poverty | Poverty Rate |
| Hispanic | 167,070 | 29,213 | 17.49% |
| White | 358,910 | 21,337 | 5.94% |
| Asian | 193,367 | 9,783 | 5.06% |
| Black | 77,920 | 8,515 | 10.93% |
| Other | 31,941 | 4,661 | 14.59% |
| Multiple | 19,905 | 1,881 | 9.45% |
| Native | 1,575 | 109 | 6.92% |
| Islander | 161 | 95 | 59.01% |
8.58%
Overall Poverty Rate
7.66%
Male Poverty Rate
9.47%
Female Poverty Rate
The race most likely to be in poverty in Middlesex County, New Jersey is Islander, with 59.01% below the poverty level.
The race least likely to be in poverty in Middlesex County, New Jersey is Asian, with 5.06% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.58%. Among those working part-time, it was 10.76%, and for those that did not work, the poverty rate was 15.23%.
52.1%
Overall Marriage Rate
54.0%
Male Marriage Rate
50.3%
Female Marriage Rate
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.
| Name | Veterans | % of Total |
| White | 21,701 | 5.40% |
| Hispanic | 2,367 | 1.98% |
| Black | 2,367 | 3.68% |
| Asian | 813 | 0.53% |
| 2 or More | 365 | 3.22% |
| Other | 355 | 1.55% |
| Indian | 33 | 3.00% |
| Hawaiian | 10 | 5.41% |
4.07%
Veteran Poverty Rate
28.87%
Veteran Disability Rate
64.7%
Labor Force Participation
60.6%
Employment Rate
6.4%
Unemployment Rate
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
67.44%
Native Born
32.56%
Foreign Born
15.12%
Non Citizen
67.44% of Middlesex County, New Jersey residents were born in the United States, with 46.69% having been born in New Jersey. 15.12% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
| City | 2010 Census | 2016 Estimated | Growth | Growth Rate |
| New Brunswick | 54500 | 56910 | 2410 | 4.42% |
| Perth Amboy | 50814 | 52499 | 1685 | 3.32% |
| Sayreville | 42712 | 44905 | 2193 | 5.13% |
| South Plainfield | 23403 | 24221 | 818 | 3.50% |
| Carteret | 22845 | 23992 | 1147 | 5.02% |
| South River | 16054 | 16295 | 241 | 1.50% |
| Highland Park | 13982 | 14195 | 213 | 1.52% |
| Metuchen | 13558 | 13871 | 313 | 2.31% |
| Middlesex | 13635 | 13812 | 177 | 1.30% |
| South Amboy | 8624 | 8778 | 154 | 1.79% |
| Spotswood | 8257 | 8429 | 172 | 2.08% |
| Dunellen | 7227 | 7374 | 147 | 2.03% |
| Milltown | 6893 | 7132 | 239 | 3.47% |
| Jamesburg | 5900 | 6040 | 140 | 2.37% |
| Helmetta | 2178 | 2213 | 35 | 1.61% |