Median Age in Stillwater County, MT
ACS 2024 5-Year Estimates
46.7 years
Rank #517/3,222 · #21 in MT
84th
Stillwater 46.7 years
MT 40.4 years +15.6%
US 38.9 years +20.1%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Stillwater County's median age of 46.7 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 Stillwater County for median age.
Nearby Rankings
Full ranking →| #514 | Gallatin County, IL | 46.7 years |
| #515 | Guthrie County, IA | 46.7 years |
| #516 | Atchison County, MO | 46.7 years |
| #517 | Stillwater County, MT | 46.7 years |
| #518 | Caswell County, NC | 46.7 years |
| #519 | Johnson County, TN | 46.7 years |
| #520 | Russell County, VA | 46.7 years |
About Median Age
Stillwater County, Montana has a median age of 46.7 years, ranking #517 of 3,222 counties nationwide — 20.1% above the national value of 38.9 years. Within Montana, it ranks #21 of 56. This places it in the 84th 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.