Median Age in Day County, SD
ACS 2024 5-Year Estimates
How Day County Compares
National Distribution
Where Day County falls among all 3,222 U.S. counties for median age.
■ Day County: 44.8 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #773 | Iron County, MO | 44.8 years |
| #774 | Herkimer County, NY | 44.8 years |
| #775 | Tioga County, NY | 44.8 years |
| #776 | Day County, SD | 44.8 years |
| #777 | Lawrence County, SD | 44.8 years |
| #778 | Culberson County, TX | 44.8 years |
| #779 | Gloucester County, VA | 44.8 years |
Median Age in Day County, South Dakota
Day County, South Dakota has a median age of 44.8 years, which ranks #776 of 3,222 out of 3,222 counties nationwide. This is 15.2% above the national value of 38.9 years.
Within South Dakota, Day County ranks #14 of 66 out of 66 counties. This places it in the 76th 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.