Median Age in Johnston County, OK
ACS 2024 5-Year Estimates
39.3 years
Rank #2,317/3,222 · #42 in OK
28th
Johnston 39.3 years
OK 37.0 years +6.2%
US 38.9 years +1.0%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Johnston County's median age of 39.3 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 Johnston County for median age.
Nearby Rankings
Full ranking →| #2,314 | Los Alamos County, NM | 39.3 years |
| #2,315 | St. Lawrence County, NY | 39.3 years |
| #2,316 | Coal County, OK | 39.3 years |
| #2,317 | Johnston County, OK | 39.3 years |
| #2,318 | Lawrence County, TN | 39.3 years |
| #2,319 | Gonzales County, TX | 39.3 years |
| #2,320 | Hutchinson County, TX | 39.3 years |
About Median Age
Johnston County, Oklahoma has a median age of 39.3 years, ranking #2,317 of 3,222 counties nationwide — 1.0% above the national value of 38.9 years. Within Oklahoma, it ranks #42 of 77. This places it in the 28th 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.