Total Population in Mercer County, NJ
ACS 2024 5-Year Estimates
How Mercer County Compares
National Distribution
Where Mercer County falls among all 3,222 U.S. counties for total population.
■ Mercer County: 385,864
Ranking Context
| Rank | County | Value |
|---|---|---|
| #190 | Brazoria County, TX | 391,255 |
| #191 | Forsyth County, NC | 389,977 |
| #192 | Bell County, TX | 386,897 |
| #193 | Mercer County, NJ | 385,864 |
| #194 | Lane County, OR | 384,207 |
| #195 | Horry County, SC | 383,016 |
| #196 | Lehigh County, PA | 378,792 |
Total Population in Mercer County, New Jersey
Mercer County, New Jersey has a total population of 385,864, which ranks #193 of 3,222 out of 3,222 counties nationwide. This is 99.9% below the national value of 330M.
Within New Jersey, Mercer County ranks #12 of 21 out of 21 counties. This places it in the 94th 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.