Median Age in Mercer County, OH
ACS 2024 5-Year Estimates
How Mercer County Compares
National Distribution
Where Mercer County falls among all 3,222 U.S. counties for median age.
■ Mercer County: 39.4 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #2,294 | Callaway County, MO | 39.4 years |
| #2,295 | Valencia County, NM | 39.4 years |
| #2,296 | Knox County, OH | 39.4 years |
| #2,297 | Mercer County, OH | 39.4 years |
| #2,298 | Dauphin County, PA | 39.4 years |
| #2,299 | Lancaster County, PA | 39.4 years |
| #2,300 | Florence County, SC | 39.4 years |
Median Age in Mercer County, Ohio
Mercer County, Ohio has a median age of 39.4 years, which ranks #2,297 of 3,222 out of 3,222 counties nationwide. This is 1.3% above the national value of 38.9 years.
Within Ohio, Mercer County ranks #76 of 88 out of 88 counties. This places it in the 29th percentile nationally.
The median age of the total population. 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.