New Jersey Counties by Population (2026)
2026 Pop.
100K
200K
300K
400K
500K
600K
700K
800K
900K
Top 5 Most Populous Counties
980,575
901,517
885,050
739,038
679,097
| County | 2026 Pop. ↓ | Area (mi²) | Density (/mi²) | Change (2020) |
|---|---|---|---|---|
| Bergen County | 980,575 | 233 | 4,208 | 2.8% |
| Essex County | 901,517 | 126 | 7,155 | 4.84% |
| Middlesex County | 885,050 | 309 | 2,864 | 2.76% |
| Hudson County | 739,038 | 46 | 16,066 | 2.39% |
| Ocean County | 679,097 | 628 | 1,081 | 6.42% |
| Monmouth County | 653,397 | 468 | 1,396 | 1.71% |
| Union County | 604,983 | 103 | 5,874 | 5.49% |
| Camden County | 538,003 | 221 | 2,434 | 2.82% |
| Passaic County | 532,131 | 186 | 2,861 | 1.72% |
| Morris County | 527,147 | 461 | 1,143 | 3.73% |
| Burlington County | 485,356 | 799 | 607 | 5.12% |
| Mercer County | 401,249 | 224 | 1,791 | 3.83% |
| Somerset County | 357,850 | 302 | 1,185 | 3.87% |
| Gloucester County | 314,013 | 322 | 975 | 3.78% |
| Atlantic County | 278,847 | 556 | 502 | 1.7% |
| Cumberland County | 157,889 | 483 | 327 | 2.7% |
| Sussex County | 148,681 | 518 | 287 | 3.34% |
| Hunterdon County | 132,465 | 428 | 309 | 2.87% |
| Warren County | 113,482 | 357 | 318 | 3.7% |
| Cape May County | 92,686 | 252 | 368 | -2.47% |
| Salem County | 66,620 | 332 | 201 | 2.84% |
Sources
- US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
- American Community Survey (2009 - 2013)
- Census QuickFacts
- Historical Populations of States and Counties (1790 - 1990)