| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Slab Crossing | city | Montana | United States | 48.29 | -104.70 | 1925 | |
| Slayton Junction (historical) | city | Montana | United States | 46.30 | -109.06 | 3599 | |
| Sleeping Buffalo | city | Montana | United States | 48.48 | -107.53 | 2509 | |
| Sloan | city | Montana | United States | 47.49 | -114.33 | 2752 |