Median Age in Johnson County, IN
ACS 2024 5-Year Estimates
38.0 years
Rank #2,578/3,222 · #79 in IN
20th
Johnson 38.0 years
IN 38.1 years -0.3%
US 38.9 years -2.3%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Johnson County's median age of 38.0 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 Johnson County for median age.
Nearby Rankings
Full ranking →| #2,575 | Sebastian County, AR | 38.0 years |
| #2,576 | Polk County, GA | 38.0 years |
| #2,577 | Cook County, IL | 38.0 years |
| #2,578 | Johnson County, IN | 38.0 years |
| #2,579 | Leavenworth County, KS | 38.0 years |
| #2,580 | Robertson County, KY | 38.0 years |
| #2,581 | Terrebonne Parish, LA | 38.0 years |
About Median Age
Johnson County, Indiana has a median age of 38.0 years, ranking #2,578 of 3,222 counties nationwide — 2.3% below the national value of 38.9 years. Within Indiana, it ranks #79 of 92. This places it in the 20th 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.