Roundup is located in Musselshell County. About 1,742 people live here (as of 2020). Between 2010 and 2020, the population declined from 1,788 to 1,742. The region is at 980 meters above sea level. The area covers about 3.3 square kilometers. There are about 78 streets in Roundup. The postal codes are 59072–59073. The dialing code is 406. Roundup is city in and the county seat of Musselshell County, Montana, United States. Among other things, Roundup has restaurants, cafés, supermarkets, museums, schools and banks.
| Area | 3.3 km² |
| Elevation | 980 m |
| Located in | Musselshell County |
| Postal code | 59072 |
| Country | United States |
| Population | 1742 |
| Official name | Roundup |
| Bike path |
| Bike lane on roadway |
| Cycling allowed on bus lane |
| Bicycle street |
| Open to cyclists |
| Open to cyclists, good path |
| Cycling prohibited |
| Cobblestone |
| Long-distance bike route | (depending on scale) |
| Long-distance bike route |
| Long-distance hiking trail | (depending on scale) |
| Long-distance hiking trail |
| Pedestrians prohibited |
Public transit map Roundup Legend 
Bicycle map Roundup Legend 
Pedestrian map Roundup Legend