Median Age in Putnam County, IL
ACS 2024 5-Year Estimates
47.4 years
Rank #411/3,222 · #8 in IL
87th
Putnam 47.4 years
IL 39.0 years +21.5%
US 38.9 years +21.9%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Putnam County's median age of 47.4 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 Putnam County for median age.
Nearby Rankings
Full ranking →| #408 | Oconto County, WI | 47.5 years |
| #409 | Choctaw County, AL | 47.4 years |
| #410 | Marin County, CA | 47.4 years |
| #411 | Putnam County, IL | 47.4 years |
| #412 | Waldo County, ME | 47.4 years |
| #413 | Lac qui Parle County, MN | 47.4 years |
| #414 | Holt County, MO | 47.4 years |
About Median Age
Putnam County, Illinois has a median age of 47.4 years, ranking #411 of 3,222 counties nationwide — 21.9% above the national value of 38.9 years. Within Illinois, it ranks #8 of 102. This places it in the 87th 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.