Middlesex, New Jersey Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Middlesex, New Jersey is 14,518 as of the 2023 American Community Survey, making it the 88th-largest city in New Jersey. The median household income is $107,063, the median home value is $414,600, and the median age is 44.3.
The population has grown 9.1% since 2010 (13,629 → 14,874).
14,518
Population
4162
People / sq mi
$107,063
Median Income
$414,600
Median Home Value
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Middlesex covers 3.5 sq mi of land at 4162 people per square mile.
About Middlesex, NJ
Age is the most distinctive thing about Middlesex: a median age of 44.3, older than the national median. Middlesex is a city in New Jersey with a population of 14,518.
Households take in a median $107,063, comfortably above the US median of $78,538. About 8.7% of residents live below the federal poverty level, below the national 12.4%. The typical home is valued at $414,600, with typical rent around $1,493.
Roughly 34.5% of adults have a bachelor’s, near the national 35.0%. About 9.1% of the workforce is home-based, below the national 14.0%, and the average commute runs about 26 minutes each way.
The age structure shapes everything downstream in Middlesex — from housing demand to the mix of working-age earners reflected in the income figures above.
Middlesex borough Population History (2010-2024)
The city of Middlesex borough had a population of 13,629 in 2010 and 14,874 in 2024, a 9.1% growth over 14 years. The peak was 14,874 in 2024. Average annual growth rate: 0.64%.
14,874
Population (2024)
13,629
Population (2010)
14,874
Peak (2024)
0.64%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 13,629 |
| 2011 | 13,661 |
| 2012 | 13,691 |
| 2013 | 13,685 |
| 2014 | 13,706 |
| 2015 | 13,670 |
| 2016 | 13,615 |
| 2017 | 13,604 |
| 2018 | 13,651 |
| 2019 | 13,679 |
| 2020 | 14,591 |
| 2021 | 14,539 |
| 2022 | 14,542 |
| 2023 | 14,672 |
| 2024 | 14,874 |
Race & Ethnicity
| White | 60.7% |
| Black or African American | 7.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.1% |
| Two or More Races | 0.0% |
Economy & Income
$107,063
Median Household Income
$50,637
Per Capita Income
8.7%
Poverty Rate
3.3%
Unemployment Rate
Housing
$414,600
Median Home Value
$1,493
Median Rent
72.6%
Owner-Occupied
Education
90.9%
High School+
34.5%
Bachelor's+
Commute
1.6%
Drive Alone
80.7%
Public Transit
9.1%
Work From Home
25.7 min
Avg Commute
Community Profile
18.1%
Foreign Born
65.7%
Non-English at Home
3.7%
Veterans
11.4%
With Disability
92.1%
Health Insurance
95.3%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 27.4% |
| Finance, Insurance & Real Estate | 15.8% |
| Education, Health Care & Social Services | 8.5% |
| Construction | 7.8% |
| Information | 7.3% |
| Manufacturing | 7.2% |
| Retail Trade | 6.1% |
| Public Administration | 4.3% |
| Transportation & Warehousing | 1.9% |
| Arts, Entertainment & Food Services | 1.4% |
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Frequently Asked Questions
Middlesex, New Jersey has a population of 14,518 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 88th-largest city in New Jersey.
The median household income in Middlesex, New Jersey is $107,063, with 8.7% of residents living below the federal poverty level.
The median home value in Middlesex, New Jersey is $414,600, with median monthly rent at $1,493 and a homeownership rate of 72.6%.
The median age in Middlesex, New Jersey is 44.3 years. The population is 47.2% male and 52.8% female.
The population has grown 9.1% since 2010 (13,629 → 14,874).
Middlesex borough, NJ Climate
Middlesex borough, NJ has an average annual temperature of 11.7°C (53°F) and receives about 1242 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.7°C
Avg Temp
1242
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 30° | 99 mm |
| February | 0° / 32° | 76 mm |
| March | 5° / 41° | 103 mm |
| April | 11° / 51° | 103 mm |
| May | 16° / 62° | 116 mm |
| June | 21° / 70° | 101 mm |
| July | 24° / 75° | 130 mm |
| August | 23° / 74° | 112 mm |
| September | 19° / 67° | 111 mm |
| October | 13° / 55° | 92 mm |
| November | 7° / 45° | 103 mm |
| December | 2° / 35° | 96 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Middlesex borough, NJ
The most comfortable months to visit Middlesex borough, NJ are typically June, September and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -6°C low). July is usually the wettest month.
Where to stay near Middlesex
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.