Median Age in Lewis and Clark County, MT
ACS 2024 5-Year Estimates
How Lewis and Clark County Compares
National Distribution
Where Lewis and Clark County falls among all 3,222 U.S. counties for median age.
■ Lewis and Clark County: 41.8 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #1,565 | Swift County, MN | 41.8 years |
| #1,566 | Franklin County, MO | 41.8 years |
| #1,567 | Harrison County, MO | 41.8 years |
| #1,568 | Lewis and Clark County, MT | 41.8 years |
| #1,569 | Somerset County, NJ | 41.8 years |
| #1,570 | Westchester County, NY | 41.8 years |
| #1,571 | Billings County, ND | 41.8 years |
Median Age in Lewis and Clark County, Montana
Lewis and Clark County, Montana has a median age of 41.8 years, which ranks #1,568 of 3,222 out of 3,222 counties nationwide. This is 7.5% above the national value of 38.9 years.
Within Montana, Lewis and Clark County ranks #40 of 56 out of 56 counties. This places it in the 51th 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.