Median Age in Jersey County, IL
ACS 2024 5-Year Estimates
43.7 years
Rank #1,006/3,222 · #33 in IL
69th
Jersey 43.7 years
IL 39.0 years +12.1%
US 38.9 years +12.3%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Jersey County's median age of 43.7 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 Jersey County for median age.
Nearby Rankings
Full ranking →| #1,003 | Johnson County, GA | 43.7 years |
| #1,004 | Boundary County, ID | 43.7 years |
| #1,005 | De Witt County, IL | 43.7 years |
| #1,006 | Jersey County, IL | 43.7 years |
| #1,007 | Randolph County, IL | 43.7 years |
| #1,008 | Pike County, IN | 43.7 years |
| #1,009 | Butler County, IA | 43.7 years |
About Median Age
Jersey County, Illinois has a median age of 43.7 years, ranking #1,006 of 3,222 counties nationwide — 12.3% above the national value of 38.9 years. Within Illinois, it ranks #33 of 102. This places it in the 69th 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.