How many counties are in New Jersey?

New Jersey has 21 counties, according to the U.S. Census Bureau.

What is the largest city in New Jersey?

Newark is the largest city in New Jersey, with a population of about 310,178.

What is the population of New Jersey?

New Jersey has about 9,343,809 residents, based on the Census Bureau's American Community Survey 5-year estimates.

How many ZIP codes are in New Jersey?

There are 598 ZIP Code Tabulation Areas in New Jersey.

New Jersey (NJ): Counties, Cities, ZIP Codes & Public Data

Population

9,343,809

Land area

7,355sq mi

People per sq mi

1,270

Cities and towns

700

New Jersey at a glance

Households here earn a median of $103,556 a year, 28% more than the U.S. figure of $80,734.
A typical owner-occupied home is valued at $454,400 (37% above the U.S.) and median rent is $1,720 a month.
The biggest population centers are Newark (310,178), Jersey City (294,078) and Paterson (158,735).

Local data for New Jersey

Counts from official public data

Housing and community stats

New Jersey, American Community Survey 2020-2024

Full profile

Median household income

$103,556

Poverty rate

9.7%

Median home value

$454,400

Prices +4.6% in a year

Median rent

$1,720/mo

Homeownership

63.8%

Bachelor's or higher

43.6%

Median age

40.1

Average commute

30.5 min

Largest reported origins and ancestries: Italian Americans (1,279,010), Irish Americans (1,130,177), German Americans (807,255).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

4.2%

Sep 2026, -1.3 pts in a year

Average annual pay

$86,247

4,282,851 jobs, 2025

Income per person

$84,893

BEA, 2024

Federal spending

$73.28B

FY 2026, $7,889 per person

PPP loans

$25.59B

302,430 loans, 2,756,231 jobs reported

Campaign donations

$86.93M

Itemized, 2026 cycle

Economy Federal spending PPP loans Campaign finance

Environment and hazard risk

New Jersey, from FEMA, NOAA and EPA

Full report

High-risk counties

9

of 21 rated by FEMA

Storm events since 1996

25,940

339 deaths

Flood insurance policies

121,462

$6.5B paid since 1978

Superfund sites

153

330 toxic release facilities

Hazards, floods and storm history Check a flood zone 1,256 historic places

Health statistics

Share of adults in New Jersey, CDC PLACES estimates

All 40 measures

Obesity

28.9%

U.S. 33.3% -4.4 pts

Diabetes

10.9%

U.S. 12.1% -1.2 pts

Smoking

10.9%

U.S. 12.8% -1.9 pts

Uninsured (18-64)

11.3%

U.S. 11.1% about the same

Largest cities in New Jersey

Name	Population	Land area (sq mi)
Newark	310,178	24.1
Jersey City	294,078	14.7
Paterson	158,735	8.4
Elizabeth	137,302	12.3
Toms River	94,956	39
Trenton	90,338	7.6
Clifton	89,379	11.3
Bayonne	71,553	5.8
Camden	71,496	8.9
East Orange	70,090	3.9
Passaic	70,002	3.1
Lakewood	69,585	7.1
Union City	66,463	1.3
Vineland	61,006	68.4
Hoboken	58,668	1.3
New Brunswick	56,345	5.2
Perth Amboy	55,855	4.7
Plainfield	55,236	6
West New York	52,004	1
Hackensack	46,057	4.2
Sayreville	45,838	15.8
Sicklerville	44,998	17.4
Linden	44,192	10.7
Kearny	40,614	8.8
Fort Lee	40,067	2.5

Counties, cities and towns in New Jersey

Population shown. Largest 400 of 700 cities and towns listed

Frequently asked questions

How many counties are in New Jersey?: New Jersey has 21 counties, according to the U.S. Census Bureau.
What is the largest city in New Jersey?: Newark is the largest city in New Jersey, with a population of about 310,178.
What is the population of New Jersey?: New Jersey has about 9,343,809 residents, based on the Census Bureau's American Community Survey 5-year estimates.
How many ZIP codes are in New Jersey?: There are 598 ZIP Code Tabulation Areas in New Jersey.