
Custer
- County:
- Yellowstone County
- County Seat:
- No
- Area (mi²):
- 0.315
- State:
- Montana
Custer is a CDP located in Yellowstone County, Montana. Custer has a 2025 population of 143. Custer is currently declining at a rate of -0.69% annually and its population has decreased by -5.3% since the most recent census, which recorded a population of 151 in 2020.
The average household income in Custer is $79,370 with a poverty rate of 18.06%. The median age in Custer is 59.5 years: 59.3 years for males, and 60.2 years for females.