Census ACS 2023 · 21 counties
Largest Counties in New Jersey
New Jersey has 21 counties with Census data available. The largest is Bergen County with a population of 954,717. County-level data is important because counties are the primary unit of local government in most states, responsible for courts, elections, public health, and infrastructure. Population distribution across counties reveals where growth is concentrated and where rural decline may be occurring.
Source: Census ACS 2023 5-Year Estimates
| # | County | Population | Median Income |
|---|---|---|---|
| 1 | Warren County | 110,238 | $99,596 |
| 2 | Union County | 572,549 | $100,117 |
| 3 | Sussex County | 145,117 | $114,316 |
| 4 | Somerset County | 346,203 | $135,960 |
| 5 | Salem County | 64,973 | $78,412 |
| 6 | Passaic County | 518,289 | $87,137 |
| 7 | Ocean County | 646,434 | $86,411 |
| 8 | Morris County | 510,375 | $134,929 |
| 9 | Monmouth County | 643,615 | $122,727 |
| 10 | Middlesex County | 861,535 | $109,028 |
| 11 | Mercer County | 383,286 | $96,333 |
| 12 | Hunterdon County | 129,448 | $139,453 |
| 13 | Hudson County | 710,478 | $90,032 |
| 14 | Gloucester County | 304,504 | $102,807 |
| 15 | Essex County | 854,130 | $76,712 |
| 16 | Cumberland County | 152,915 | $64,499 |
| 17 | Cape May County | 95,236 | $88,046 |
| 18 | Camden County | 524,042 | $86,384 |
| 19 | Burlington County | 464,226 | $105,271 |
| 20 | Bergen County | 954,717 | $123,715 |
| 21 | Atlantic County | 274,704 | $76,819 |
More Rankings for New Jersey
Frequently Asked Questions
Bergen County is the #1 ranked county in New Jersey by population, with a value of 954,717 according to Census ACS 2023 data.
New Jersey has 21 counties tracked in Census ACS 2023 data.
All data comes from the American Community Survey (ACS) 2023 5-Year estimates by the US Census Bureau.
Data from the American Community Survey 2023 5-Year estimates. Covers all counties in New Jersey.