The U.S. state of New Jersey is divided into 21 counties. Explore list of California Counties and their County Seats in alphabetical order and check their population, areas and the date of formation.
List of New Jersey Counties and County Seat
| S.N | County | County Seat | Population(2011) | Area | Formed |
|---|---|---|---|---|---|
| 1 | Atlantic County | Mays Landing | 274,549 | 561 sq mi | 1837 |
| 2 | Bergen County | Hackensack | 905,116 | 234 sq mi | 1683 |
| 3 | Burlington County | Mount Holly | 448,734 | 805 sq mi | 1694 |
| 4 | Camden County | Camden | 513,657 | 222 sq mi | 1844 |
| 5 | Cape May County | Cape May Court House | 97,265 | 255 sq mi | 1692 |
| 6 | Cumberland County | Bridgeton | 156,898 | 489 sq mi | 1748 |
| 7 | Essex County | Newark | 783,969 | 126 sq mi | 1683 |
| 8 | Gloucester County | Woodbury | 288,288 | 325 sq mi | 1686 |
| 9 | Hudson County | Jersey City | 634,266 | 47 sq mi | 1840 |
| 10 | Hunterdon County | Flemington | 128,349 | 430 sq mi | 1714 |
| 11 | Mercer County | Trenton | 366,513 | 226 sq mi | 1838 |
| 12 | Middlesex County | New Brunswick | 809,858 | 311 sq mi | 1683 |
| 13 | Monmouth County | Freehold Borough | 630,380 | 472 sq mi | 1683 |
| 14 | Morris County | Morristown | 492,276 | 469 sq mi | 1739 |
| 15 | Ocean County | Toms River | 576,567 | 636 sq mi | 1850 |
| 16 | Passaic County | Paterson | 501,226 | 185 sq mi | 1837 |
| 17 | Salem County | Salem | 66,083 | 338 sq mi | 1694 |
| 18 | Somerset County | Somerville | 323,444 | 305 sq mi | 1688 |
| 19 | Sussex County | Newton | 149,265 | 521 sq mi | 1753 |
| 20 | Union County | Elizabeth | 536,499 | 103 sq mi | 1857 |
| 21 | Warren County | Belvidere | 108,692 | 358 sq mi | 1824 |
