Median Age in Clinton County, IL
ACS 2024 5-Year Estimates
41.5 years
Rank #1,642/3,222 · #62 in IL
49th
Clinton 41.5 years
IL 39.0 years +6.4%
US 38.9 years +6.7%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Clinton County's median age of 41.5 years compares to all 3,222 U.S. counties. Values range from 21.4 years to 86.2 years.
Distribution of Median Age Across All Counties
Ranking Context
Counties ranked closest to Clinton County for median age.
Nearby Rankings
Full ranking →| #1,639 | Western Connecticut Planning Region, CT | 41.5 years |
| #1,640 | Schley County, GA | 41.5 years |
| #1,641 | Wilcox County, GA | 41.5 years |
| #1,642 | Clinton County, IL | 41.5 years |
| #1,643 | Marion County, IL | 41.5 years |
| #1,644 | Miami County, IN | 41.5 years |
| #1,645 | Shelby County, IN | 41.5 years |
About Median Age
Clinton County, Illinois has a median age of 41.5 years, ranking #1,642 of 3,222 counties nationwide — 6.7% above the national value of 38.9 years. Within Illinois, it ranks #62 of 102. This places it in the 49th percentile nationally.
The median age of the total population. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.