Median Age in Decatur County, IA
ACS 2024 5-Year Estimates
How Decatur County Compares
National Distribution
Where Decatur County falls among all 3,222 U.S. counties for median age.
■ Decatur County: 36.1 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #2,857 | San Benito County, CA | 36.1 years |
| #2,858 | Twin Falls County, ID | 36.1 years |
| #2,859 | Dallas County, IA | 36.1 years |
| #2,860 | Decatur County, IA | 36.1 years |
| #2,861 | Woodbury County, IA | 36.1 years |
| #2,862 | Atchison County, KS | 36.1 years |
| #2,863 | Todd County, KY | 36.1 years |
Median Age in Decatur County, Iowa
Decatur County, Iowa has a median age of 36.1 years, which ranks #2,860 of 3,222 out of 3,222 counties nationwide. This is 7.2% below the national value of 38.9 years.
Within Iowa, Decatur County ranks #93 of 99 out of 99 counties. This places it in the 11th 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.