
Jefferson City
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 23.218
- State:
- Montana
Jefferson City is a CDP located in Jefferson County, Montana. Jefferson City has a 2025 population of 482. Jefferson City is currently growing at a rate of 0.21% annually but its population has decreased by -19.13% since the most recent census, which recorded a population of 596 in 2020.
The average household income in Jefferson City is $92,283 with a poverty rate of 4.93%. The median age in Jefferson City is 38.8 years: 38.8 years for males, and 37.9 years for females.