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Middlesex County, NJ

50 cities and towns and 36 ZIP codes in Middlesex County, New Jersey.

Population

871,290

Land area

309sq mi

People per sq mi

2,817

ZIP codes

36

Cities and towns in Middlesex County

Full map

Middlesex County at a glance

  • Middlesex County is about 2.2 times as dense as New Jersey as a whole.
  • By population, it ranks 2nd among 21 counties in New Jersey.
  • The median household income is $111,549, 8% above the New Jersey median of $103,556.
  • A typical owner-occupied home is valued at $462,900 and median rent is $1,871 a month.
  • Its largest cities are New Brunswick (56,345), Perth Amboy (55,855) and Sayreville (45,838).

Local data for Middlesex County, NJ

Counts from official public data

Housing and community stats

Middlesex County, NJ, American Community Survey 2020-2024

Full profile

Median household income

$111,549

Poverty rate

8.6%

Median home value

$462,900

Prices +6.1% in a year

Median rent

$1,871/mo

Homeownership

63.6%

Bachelor's or higher

45.6%

Median age

39.5

Average commute

31.2 min

Largest reported origins and ancestries: Indian Americans (147,082), Italian Americans (85,140), Irish Americans (67,764).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

4.2%

Sep 2026, -1.6 pts in a year

Average annual pay

$85,564

431,665 jobs, 2025

Income per person

$77,293

BEA, 2024

Federal spending

$5B

FY 2026, $5,838 per person

PPP loans

$2.8B

26,921 loans, 282,858 jobs reported

Campaign donations

$4.4M

Itemized, 2026 cycle

EconomyFederal spendingPPP loans

How people get to work

Middlesex County, NJ, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone61.3%
  • Carpooled8.1%
  • Public transit5.9%
  • Walked2.9%
  • Bicycle0.3%
  • Taxi, ride-hailing, motorcycle or other3.5%
  • Worked from home18.1%

Average one-way commute: 31.2 minutes for people who do not work from home.

Environment and hazard risk

Middlesex County, NJ, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively High

Top: strong wind

Storm events since 1996

1,228

Most often thunderstorm wind

Flood insurance policies

2,496

1.2% of homes, county

July high / Jan low

87° / 23°F

49.5 inches of rain a year

Hazards, floods and storm historyCheck a flood zone55 historic places

Health statistics

Share of adults in Middlesex County, NJ, CDC PLACES estimates

All 40 measures

Obesity

29.9%

U.S. 33.3% -3.4 pts

Diabetes

11.6%

U.S. 12.1% -0.5 pts

Smoking

10.0%

U.S. 12.8% -2.8 pts

Uninsured (18-64)

10.8%

U.S. 11.1% about the same

Cities, towns and ZIP codes in Middlesex County

Population shown

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Frequently asked questions

What is the largest city in Middlesex County, NJ?
New Brunswick is the largest city or town in Middlesex County, with about 56,345 residents.
How many ZIP codes are in Middlesex County?
Middlesex County includes 36 ZIP Code Tabulation Areas, including 07001, 07008, 07064, 07067, 07077.
What is the population of Middlesex County, NJ?
About 871,290 people live in Middlesex County, based on American Community Survey 5-year estimates.
What counties border Middlesex County?
Middlesex County borders Monmouth County, Union County, Mercer County, Somerset County.

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023

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