Total Population in Jefferson County, MT
ACS 2024 5-Year Estimates
12,774
Rank #2,300/3,222 · #16 in MT
29th
Jefferson 12,774
MT 1,116,875 -98.9%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Jefferson County's total population of 12,774 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Jefferson County for total population.
Nearby Rankings
Full ranking →| #2,297 | Wright County, IA | 12,791 |
| #2,298 | Cass County, IL | 12,784 |
| #2,299 | Rains County, TX | 12,775 |
| #2,300 | Jefferson County, MT | 12,774 |
| #2,301 | Kodiak Island Borough, AK | 12,771 |
| #2,302 | Mason County, IL | 12,745 |
| #2,303 | Madison County, MO | 12,729 |
About Total Population
Jefferson County, Montana has a total population of 12,774, ranking #2,300 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within Montana, it ranks #16 of 56. This places it in the 29th percentile nationally.
Total population count from the American Community Survey. 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.