Borough · New Jersey
Middlesex, New Jersey
Middlesex, borough, in Middlesex County, New Jersey. Middlesex had 14,740 residents on July 1, 2025 by the Census Bureau's estimate, up 0.7% since 2020; the 2020 Census counted 14,636 and the ACS 2020-2024 5-year estimates put it at 14,645 (±29). GEOID 3445900.
Residents, July 2025 estimate
14,740
Census Bureau estimate (no margin published)
2020 Census count: 14,636 · ACS 2020-2024: 14,645 ±29
Median household income
$105,000
±$12,543 (90% margin)
New Jersey: $103,556
Median home value
$446,400
±$11,697 (90% margin)
New Jersey: $454,400
Median gross rent
$1,416
±$58 (90% margin)
New Jersey: $1,720
Where is Middlesex and what county is it in?
Middlesex is a borough in Middlesex County, New Jersey. It covers 3.5 square miles of land, 4,196 residents per square mile in 2020.
Middlesex is in the New York-Newark-Jersey City, NY-NJ metropolitan statistical area, which takes in 22 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Middlesex, and is it growing?
The Census Bureau estimates that 14,740 people lived in Middlesex on July 1, 2025, up 0.7% since 2020, slower than New Jersey (+2.8%). The 2020 Census counted 14,636 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 14,645 (±29).
| Measure | Middlesex | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 14,645 ±29 | 871,290 | +983 |
| Households | 5,718 ±406 | 307,782 | +850 |
| Average household size | 2.56 ±0.18 | 2.75 | −0.24 |
| Housing units | 5,799 ±398 | 317,979 | +609 |
Middlesex's population since 2000
From 13,717 in 2000 to 14,740 in 2025: up 7.5%. The 2000, 2010 and 2020 figures are census counts, each for Middlesex as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Middlesex?
The median resident of Middlesex is 44.3 years old; 20.9% are under 18 and 19.6% are 65 or older. The largest group is non-Hispanic white residents at 54.2%, then Hispanic or Latino residents (of any race) at 24.3%. 27.7% of residents were born outside the United States.
| Measure | Middlesex | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 44.3 ±3.7 | 39.5 | no clear change |
| Under 18 years | 20.9% ±3.3 pts | 21.5% | – |
| 65 years and over | 19.6% ±3.5 pts | 16.1% | – |
| Male | 46.5% ±2.8 pts | 49.7% | – |
| Hispanic or Latino (any race) | 24.3% ±7.0 pts | 23.6% | no clear change |
| White alone, not Hispanic | 54.2% ±6.2 pts | 37.5% | no clear change |
| Black or African American alone, not Hispanic | 5.2% ±2.4 pts | 9.7% | no clear change |
| Asian alone, not Hispanic | 13.8% ±5.6 pts | 25.4% | +7.5 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.3 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.7% ±0.8 pts | 2.9% | – |
| Some other race alone, not Hispanic | 0.7% ±0.7 pts | 0.8% | – |
| Born outside the United States | 27.7% ±5.4 pts | 35.4% | no clear change |
| Speak a language other than English at home (age 5+) | 35.3% ±6.1 pts | 47.4% | – |
| Civilian veterans (age 18+) | 2.5% ±1.1 pts | 3.0% | – |
| With a disability | 12.9% ±3.0 pts | 10.0% | – |
| No health insurance coverage | 8.9% ±3.6 pts | 7.2% | no clear change |
| High school graduate or higher (age 25+) | 90.7% ±3.2 pts | 89.2% | – |
| Bachelor's degree or higher (age 25+) | 36.9% ±4.5 pts | 45.6% | +11.2 pts |
| Graduate or professional degree (age 25+) | 11.8% ±2.5 pts | 19.4% | – |
| Lived in the same house a year earlier | 92.7% ±3.4 pts | 89.6% | – |
| Moved from another state in the past year | 0.6% ±0.6 pts | 2.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Middlesex earn?
Half of Middlesex's 5,718 households earn less than $105,000 a year (±$12,543), against $111,549 in Middlesex County and $103,556 in New Jersey. In 2015-2019 it was $92,868 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.3% of residents live below the poverty line.
| Measure | Middlesex | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $105,000 ±$12,543 | $111,549 | no clear change |
| Mean household income | $130,198 ±$10,885 | $142,003 | – |
| Per capita income | $51,617 ±$4,941 | $50,601 | +$7,184 |
| People below the poverty line | 11.3% ±5.7 pts | 8.6% | – |
| Children under 18 below the poverty line | 15.1% ±15.3 pts | 10.6% | – |
| Households receiving SNAP | 5.6% ±3.3 pts | 7.9% | – |
| Households with a computer | 95.2% ±2.5 pts | 96.5% | – |
| Households with a broadband subscription | 93.0% ±3.7 pts | 94.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Middlesex?
Owners occupy 73.9% of Middlesex's occupied homes and renters 26.1%. The median owner-occupied home is valued at $446,400 by its owner (±$11,697). The median renter pays $1,416 a month including utilities, and 42.3% of renters pay 35% or more of their income on rent.
| Measure | Middlesex | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $446,400 ±$11,697 | $462,900 | +$68,577 |
| Median gross rent | $1,416 ±$58 | $1,871 | −$327 |
| Renters paying 35% or more of income on rent | 42.3% ±13.5 pts | 38.8% | no clear change |
| Median monthly owner costs, with a mortgage | $2,795 ±$129 | $2,877 | – |
| Owner-occupied homes | 73.9% ±4.7 pts | 63.6% | no clear change |
| Renter-occupied homes | 26.1% ±4.7 pts | 36.4% | – |
| Housing units | 5,799 ±398 | 317,979 | +609 |
| Homeowner vacancy rate | 0.0% ±1.1 pts | 0.4% | – |
| Rental vacancy rate | 4.6% ±6.7 pts | 2.4% | – |
| Single-family detached homes | 66.8% ±5.3 pts | 52.4% | – |
| Mobile homes | 0.0% ±0.8 pts | 0.8% | – |
| Built 2020 or later | 1.7% ±1.1 pts | 0.9% | – |
| Built 2010 to 2019 | 6.8% ±3.9 pts | 6.6% | – |
| Built 1939 or earlier | 5.6% ±1.9 pts | 10.4% | – |
| Households with no vehicle | 9.4% ±3.8 pts | 8.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Middlesex building?
Builders took permits for 2 new housing units in Middlesex in 2025 (0 in single-family houses), 0.1 per 1,000 residents against 2.9 across New Jersey.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Middlesex work and get to work?
77.8% of Middlesex's workers drive alone and 9.4% work from home. The average trip to work takes 26.1 minutes.
| Measure | Middlesex | Middlesex County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 68.0% ±4.0 pts | 67.2% | – |
| Unemployment rate | 3.6% ±2.5 pts | 6.7% | – |
| Drove alone to work | 77.8% ±4.5 pts | 61.3% | – |
| Carpooled | 6.8% ±2.0 pts | 8.1% | – |
| Public transportation | 1.8% ±1.3 pts | 5.9% | – |
| Walked | 0.3% ±0.4 pts | 2.9% | – |
| Worked from home | 9.4% ±2.8 pts | 18.1% | +4.8 pts |
| Mean travel time to work | 26.1 min ±2.7 | 31.2 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Middlesex?
3 census tracts lie mostly in Middlesex (2020 census blocks). Their median household incomes run from $90,828 (Tract 2) to $133,523 (Tract 1.02).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2Middlesex County | 6,740 | $90,828 |
| Tract 1.02Middlesex County | 4,440 | $133,523 |
| Tract 1.01Middlesex County | 3,465 | $111,588 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Middlesex) · Census block assignment files
How does Middlesex compare with other places in New Jersey?
By the Census Bureau's July 2025 estimates, Middlesex is the 2,427th-most populous of the 19,476 U.S. incorporated places that have one and the 72nd-most populous of 323 in New Jersey.
Middlesex ranks 452nd of 771 places in New Jersey with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 72nd | 323 |
| Growth 2020-2025 (PEP) | 432nd | 532 |
| Residents per square mile | 187th | 787 |
| Median household income | 452nd | 771 |
| Per capita income | 449th | 785 |
| Median home value | 374th | 777 |
| Median gross rent | 581st | 701 |
| Poverty rate | 104th | 539 |
| Bachelor's degree or higher | 485th | 780 |
| Median age | 292nd | 786 |
| Owner-occupied share | 476th | 777 |
| Work from home | 594th | 695 |
| Travel time to work | 601st | 787 |
Middlesex's figures with every place in New Jersey (CSV)
Every place in New Jersey, sortable · Compare Middlesex with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Middlesex?
11 of the 57 figures for Middlesex on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Middlesex are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Middlesex.