Median Age in DeKalb County, MO
ACS 2024 5-Year Estimates
42.2 years
Rank #1,440/3,222 · #42 in MO
55th
DeKalb 42.2 years
MO 39.0 years +8.2%
US 38.9 years +8.5%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How DeKalb County's median age of 42.2 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 DeKalb County for median age.
Nearby Rankings
Full ranking →| #1,437 | Meeker County, MN | 42.2 years |
| #1,438 | Wilkin County, MN | 42.2 years |
| #1,439 | Montgomery County, MS | 42.2 years |
| #1,440 | DeKalb County, MO | 42.2 years |
| #1,441 | Perry County, MO | 42.2 years |
| #1,442 | Flathead County, MT | 42.2 years |
| #1,443 | Howard County, NE | 42.2 years |
About Median Age
DeKalb County, Missouri has a median age of 42.2 years, ranking #1,440 of 3,222 counties nationwide — 8.5% above the national value of 38.9 years. Within Missouri, it ranks #42 of 115. This places it in the 55th 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.