City
| City / Place Name | ZIP | County | State | Longitude | Latitude |
|---|---|---|---|---|---|
| Melstone | 59054 | Musselshell | Montana | -107.8692 | 46.5986 |
| Musselshell | 59059 | Musselshell | Montana | -108.0912 | 46.5186 |
| Roundup | 59072 | Musselshell | Montana | -108.5438 | 46.4225 |
| Roundup | 59073 | Musselshell | Montana | -108.5418 | 46.4452 |