Total Population in Union County, NJ
ACS 2024 5-Year Estimates
How Union County Compares
National Distribution
Where Union County falls among all 3,222 U.S. counties for total population.
■ Union County: 579,290
Ranking Context
| Rank | County | Value |
|---|---|---|
| #117 | Bristol County, MA | 582,270 |
| #118 | Volusia County, FL | 579,622 |
| #119 | Jefferson County, CO | 579,377 |
| #120 | Union County, NJ | 579,290 |
| #121 | Delaware County, PA | 579,222 |
| #122 | New Castle County, DE | 577,961 |
| #123 | Baltimore city, MD | 573,243 |
Total Population in Union County, New Jersey
Union County, New Jersey has a total population of 579,290, which ranks #120 of 3,222 out of 3,222 counties nationwide. This is 99.8% below the national value of 330M.
Within New Jersey, Union County ranks #7 of 21 out of 21 counties. This places it in the 96th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.