Median Age in St. Louis city, MO
ACS 2024 5-Year Estimates
36.8 years
Rank #2,775/3,222 · #106 in MO
14th
St. Louis 36.8 years
MO 39.0 years -5.6%
US 38.9 years -5.4%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How St. Louis city's median age of 36.8 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 St. Louis city for median age.
Nearby Rankings
Full ranking →| #2,772 | Newton County, GA | 36.8 years |
| #2,773 | Camas County, ID | 36.8 years |
| #2,774 | Jasper County, MO | 36.8 years |
| #2,775 | St. Louis city, MO | 36.8 years |
| #2,776 | Hunt County, TX | 36.8 years |
| #2,777 | Madison County, TX | 36.8 years |
| #2,778 | Sevier County, UT | 36.8 years |
About Median Age
St. Louis city, Missouri has a median age of 36.8 years, ranking #2,775 of 3,222 counties nationwide — 5.4% below the national value of 38.9 years. Within Missouri, it ranks #106 of 115. This places it in the 14th 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.