Miles City
- County:
- Custer County
- County Seat:
- Yes
- Area (mi²):
- 3.362
- State:
- Montana
Miles City is a city located in Custer County, Montana. Miles City has a 2026 population of 8,407. It is also the county seat of Custer County. Miles City is currently declining at a rate of -0.46% annually but its population has increased by 0.73% since the most recent census, which recorded a population of 8,346 in 2020.