Median Age in Mercer County, PA
ACS 2024 5-Year Estimates
45.1 years
Rank #730/3,222 · #20 in PA
77th
Mercer 45.1 years
PA 40.9 years +10.3%
US 38.9 years +15.9%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Mercer County's median age of 45.1 years compares to all 3,222 U.S. counties. Values range from 21.4 years to 86.2 years.
Distribution of Median Age Across All Counties
Ranking Context
Counties ranked closest to Mercer County for median age.
Nearby Rankings
Full ranking →| #727 | Marshall County, KY | 45.1 years |
| #728 | Houston County, MN | 45.1 years |
| #729 | Pierce County, ND | 45.1 years |
| #730 | Mercer County, PA | 45.1 years |
| #731 | Tioga County, PA | 45.1 years |
| #732 | Wyoming County, PA | 45.1 years |
| #733 | Hardin County, TN | 45.1 years |
About Median Age
Mercer County, Pennsylvania has a median age of 45.1 years, ranking #730 of 3,222 counties nationwide — 15.9% above the national value of 38.9 years. Within Pennsylvania, it ranks #20 of 67. This places it in the 77th percentile nationally.
The median age of the total population. 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.