Median Age in Marion County, IN
ACS 2024 5-Year Estimates
How Marion County Compares
National Distribution
Where Marion County falls among all 3,222 U.S. counties for median age.
■ Marion County: 34.4 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #3,002 | Castro County, TX | 34.5 years |
| #3,003 | Uvalde County, TX | 34.5 years |
| #3,004 | Ward County, TX | 34.5 years |
| #3,005 | Marion County, IN | 34.4 years |
| #3,006 | Richland County, SC | 34.4 years |
| #3,007 | Hale County, TX | 34.4 years |
| #3,008 | Reeves County, TX | 34.4 years |
Median Age in Marion County, Indiana
Marion County, Indiana has a median age of 34.4 years, which ranks #3,005 of 3,222 out of 3,222 counties nationwide. This is 11.6% below the national value of 38.9 years.
Within Indiana, Marion County ranks #88 of 92 out of 92 counties. This places it in the 7th 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.