Median Age in Boone County, IL
ACS 2024 5-Year Estimates
How Boone County Compares
National Distribution
Where Boone County falls among all 3,222 U.S. counties for median age.
■ Boone County: 39.7 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #2,191 | Liberty County, FL | 39.7 years |
| #2,192 | Forsyth County, GA | 39.7 years |
| #2,193 | Bond County, IL | 39.7 years |
| #2,194 | Boone County, IL | 39.7 years |
| #2,195 | Lake County, IN | 39.7 years |
| #2,196 | Webster County, IA | 39.7 years |
| #2,197 | Franklin County, KS | 39.7 years |
Median Age in Boone County, Illinois
Boone County, Illinois has a median age of 39.7 years, which ranks #2,194 of 3,222 out of 3,222 counties nationwide. This is 2.1% above the national value of 38.9 years.
Within Illinois, Boone County ranks #84 of 102 out of 102 counties. This places it in the 32th 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.