Total Population in Union County, PA
ACS 2024 5-Year Estimates
42,456
Rank #1,158/3,222 · #50 in PA
64th
Union 42,456
PA 13M -99.7%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Union County's total population of 42,456 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Union County for total population.
Nearby Rankings
Full ranking →| #1,155 | Upshur County, TX | 42,567 |
| #1,156 | Muscatine County, IA | 42,559 |
| #1,157 | Mercer County, OH | 42,484 |
| #1,158 | Union County, PA | 42,456 |
| #1,159 | Baxter County, AR | 42,407 |
| #1,160 | Hendry County, FL | 42,382 |
| #1,161 | Miller County, AR | 42,360 |
About Total Population
Union County, Pennsylvania has a total population of 42,456, ranking #1,158 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within Pennsylvania, it ranks #50 of 67. This places it in the 64th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.