How many counties in New Jersey? All 21 listed
Quick answer
New Jersey has 21 counties and county equivalents holding 9,267,014 residents. The most populous county in New Jersey is Bergen County with 954,717 residents; the smallest is Salem County. County boundaries divide the state's land area — measured in square miles by the Census Bureau — into the units used for property assessment, elections and local sales tax. The statewide sales tax base rate is 6.625% with no local add-ons.
All 21 counties
Ranked by population, Census 2019-2023 ACS 5-year estimates.
| County | Population | Median income | Median home value | Median rent |
|---|---|---|---|---|
| Bergen County | 954,717 | $123,715 | $593,200 | $1,863 |
| Middlesex County | 861,535 | $109,028 | $439,300 | $1,810 |
| Essex County | 854,130 | $76,712 | $494,400 | $1,459 |
| Hudson County | 710,478 | $90,032 | $508,600 | $1,811 |
| Ocean County | 646,434 | $86,411 | $366,600 | $1,702 |
| Monmouth County | 643,615 | $122,727 | $566,500 | $1,771 |
| Union County | 572,549 | $100,117 | $488,800 | $1,664 |
| Camden County | 524,042 | $86,384 | $262,200 | $1,346 |
| Passaic County | 518,289 | $87,137 | $439,400 | $1,553 |
| Morris County | 510,375 | $134,929 | $557,000 | $1,860 |
| Burlington County | 464,226 | $105,271 | $326,700 | $1,669 |
| Mercer County | 383,286 | $96,333 | $351,000 | $1,515 |
| Somerset County | 346,203 | $135,960 | $523,900 | $1,921 |
| Gloucester County | 304,504 | $102,807 | $283,500 | $1,480 |
| Atlantic County | 274,704 | $76,819 | $272,700 | $1,325 |
| Cumberland County | 152,915 | $64,499 | $205,600 | $1,254 |
| Sussex County | 145,117 | $114,316 | $342,800 | $1,503 |
| Hunterdon County | 129,448 | $139,453 | $498,800 | $1,707 |
| Warren County | 110,238 | $99,596 | $323,100 | $1,368 |
| Cape May County | 95,236 | $88,046 | $395,000 | $1,345 |
| Salem County | 64,973 | $78,412 | $223,000 | $1,185 |
Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year
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