Median Age in Gallatin County, MT
ACS 2024 5-Year Estimates
How Gallatin County Compares
National Distribution
Where Gallatin County falls among all 3,222 U.S. counties for median age.
■ Gallatin County: 34.2 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #3,019 | Menominee County, WI | 34.3 years |
| #3,020 | Columbia County, AR | 34.2 years |
| #3,021 | Yuba County, CA | 34.2 years |
| #3,022 | Gallatin County, MT | 34.2 years |
| #3,023 | Centre County, PA | 34.2 years |
| #3,024 | Rutherford County, TN | 34.2 years |
| #3,025 | Faulkner County, AR | 34.1 years |
Median Age in Gallatin County, Montana
Gallatin County, Montana has a median age of 34.2 years, which ranks #3,022 of 3,222 out of 3,222 counties nationwide. This is 12.1% below the national value of 38.9 years.
Within Montana, Gallatin County ranks #53 of 56 out of 56 counties. This places it in the 6th percentile nationally.
The median age of the total population. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.