Median Age in St. Clair County, MO
ACS 2024 5-Year Estimates
How St. Clair County Compares
National Distribution
Where St. Clair County falls among all 3,222 U.S. counties for median age.
■ St. Clair County: 46.1 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #576 | Franklin County, ME | 46.1 years |
| #577 | Traverse County, MN | 46.1 years |
| #578 | Reynolds County, MO | 46.1 years |
| #579 | St. Clair County, MO | 46.1 years |
| #580 | Fillmore County, NE | 46.1 years |
| #581 | Sheridan County, NE | 46.1 years |
| #582 | Valley County, NE | 46.1 years |
Median Age in St. Clair County, Missouri
St. Clair County, Missouri has a median age of 46.1 years, which ranks #579 of 3,222 out of 3,222 counties nationwide. This is 18.5% above the national value of 38.9 years.
Within Missouri, St. Clair County ranks #13 of 115 out of 115 counties. This places it in the 82th 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.