Largest Counties in New Jersey

Rank County Population County Seat Established Area (km2) Density
1 Bergen County 905,105 Hackensack 1683 606 1,493.57
2 Middlesex County 809,847 New Brunswick 1683 805 1,006.02
3 Essex County 783,958 Newark 1683 326 2,404.78
4 Hudson County 634,255 Jersey City 1840 122 5,198.81
5 Monmouth County 630,369 Freehold Borough 1683 1,222 515.85
6 Ocean County 576,556 Toms River 1850 1,647 350.06
7 Union County 536,488 Elizabeth 1857 267 2,009.32
8 Camden County 513,646 Camden 1844 575 893.3
9 Passaic County 501,215 Paterson 1837 479 1,046.38
10 Morris County 492,265 Morristown 1739 1,215 405.16
11 Burlington County 448,723 Mount Holly 1694 2,085 215.21
12 Mercer County 366,502 Trenton 1838 585 626.5
13 Somerset County 323,433 Somerville 1688 790 409.41
14 Gloucester County 288,277 Woodbury 1686 842 342.37
15 Atlantic County 274,538 Mays Landing 1837 1,453 188.95
16 Cumberland County 156,887 Bridgeton 1748 1,267 123.83
17 Sussex County 149,254 Newton 1753 1,349 110.64
18 Hunterdon County 128,338 Flemington 1714 1,114 115.2
19 Warren County 108,681 Belvidere 1824 927 117.24
20 Cape May County 97,254 Cape May court house 1692 660 147.35
21 Salem County 66,072 Salem 1694 875 75.51

Largest Counties in New Jersey

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