Median Age in Ada County, ID
ACS 2024 5-Year Estimates
How Ada County Compares
National Distribution
Where Ada County falls among all 3,222 U.S. counties for median age.
■ Ada County: 38.4 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #2,494 | Berkeley County, WV | 38.5 years |
| #2,495 | Laramie County, WY | 38.5 years |
| #2,496 | Hall County, GA | 38.4 years |
| #2,497 | Ada County, ID | 38.4 years |
| #2,498 | DeKalb County, IN | 38.4 years |
| #2,499 | Hamilton County, IN | 38.4 years |
| #2,500 | Jackson County, IN | 38.4 years |
Median Age in Ada County, Idaho
Ada County, Idaho has a median age of 38.4 years, which ranks #2,497 of 3,222 out of 3,222 counties nationwide. This is 1.3% below the national value of 38.9 years.
Within Idaho, Ada County ranks #26 of 44 out of 44 counties. This places it in the 23th 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.