Population of New Jersey 2021

Population

The United States Census Bureau estimates that the population of New Jersey was 8,908,520 as of July 1, 2018, an increase of 1.33% since the 2010 US census. In 2010, illegal immigrants made up an estimated 6.2% of the population Population (550,000).

Ancestry

18.1% of the population are of Italian descent, making them the largest group. This is followed by the Irish (16.1%), German (15.7%), Polish (6.7%) and English (6.0%) groups.

Languages

As of 2010, 71.31% (5,830,812) of New Jersey residents aged 5+ spoke English as their primary language at home, while 14.59% (1,193,261) spoke Spanish, 1.23% (100,217) spoke Chinese (including Cantonese and Mandarin), 1.06% (86,849) Italian, 1.06% (86,486) Portuguese, 0.96% (78,627) Tagalog and Korean were spoken as the main language by 0.89% (73,057) of the population over five years. A total of 28.69% (2,345,644) of the New Jersey population aged 5 and over spoke a language other than English.

Religion

According to the Association of Religion Data Archives in 2010, the Roman Catholic Church was the largest denomination in New Jersey with 3,235,290 adherents. It is followed by Islam with 160,666 and the United Methodist Church with 138,052 followers.

The world’s largest Hindu temple was dedicated in 2014 in Robbinsville, Mercer County, in central New Jersey.

Top Counties by Population in New Jersey

Rank County Name Population Population Density (per kmĀ²)
1 Bergen County 932,213 1,538.31
2 Middlesex County 825,073 1,024.94
3 Essex County 798,986 2,450.88
4 Hudson County 672,402 5,511.49
5 Monmouth County 618,806 506.39
6 Ocean County 607,197 368.67
7 Union County 556,352 2,083.72
8 Camden County 506,482 880.84
9 Passaic County 501,837 1,047.68
10 Morris County 491,856 404.82
11 Burlington County 445,360 213.60
12 Mercer County 367,441 628.10
13 Somerset County 328,945 416.39
14 Gloucester County 291,647 346.37
15 Atlantic County 263,681 181.47
16 Cumberland County 149,538 118.03
17 Sussex County 140,499 104.15
18 Hunterdon County 124,382 111.65
19 Warren County 105,278 113.57
20 Cape May County 92,050 139.47
21 Salem County 62,396 71.31

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