Median Age in St. Mary Parish, LA
ACS 2024 5-Year Estimates
How St. Mary Parish Compares
National Distribution
Where St. Mary Parish falls among all 3,222 U.S. counties for median age.
■ St. Mary Parish: 39.7 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #2,198 | Adair County, KY | 39.7 years |
| #2,199 | Knox County, KY | 39.7 years |
| #2,200 | St. Charles Parish, LA | 39.7 years |
| #2,201 | St. Mary Parish, LA | 39.7 years |
| #2,202 | Baltimore County, MD | 39.7 years |
| #2,203 | Lauderdale County, MS | 39.7 years |
| #2,204 | Tallahatchie County, MS | 39.7 years |
Median Age in St. Mary Parish, Louisiana
St. Mary Parish, Louisiana has a median age of 39.7 years, which ranks #2,201 of 3,222 out of 3,222 counties nationwide. This is 2.1% above the national value of 38.9 years.
Within Louisiana, St. Mary Parish ranks #30 of 64 out of 64 counties. This places it in the 32th 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.