Total Population in Allegheny County, PA
ACS 2024 5-Year Estimates
1,238,177
Rank #36/3,222 · #2 in PA
99th
Allegheny 1,238,177
PA 13M -90.5%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Allegheny County's total population of 1,238,177 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 Allegheny County for total population.
Nearby Rankings
Full ranking →| #33 | Oakland County, MI | 1,279,825 |
| #34 | Hennepin County, MN | 1,269,496 |
| #35 | Cuyahoga County, OH | 1,245,873 |
| #36 | Allegheny County, PA | 1,238,177 |
| #37 | Salt Lake County, UT | 1,196,523 |
| #38 | Wake County, NC | 1,178,653 |
| #39 | Contra Costa County, CA | 1,165,012 |
About Total Population
Allegheny County, Pennsylvania has a total population of 1,238,177, ranking #36 of 3,222 counties nationwide — 99.6% below the national value of 330M. Within Pennsylvania, it ranks #2 of 67. This places it in the 99th 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.