| Business | Phone |
| Indian Affairs Bur Social Svc Po Box 65, Crow Agency 59022 | (406) 638-2842 |
| Indian Affairs Bureau Law Po Box 359, Crow Agency 59022 | (406) 638-2631 |
| Indian Affairs Bureau Roads Forestry Rd, Crow Agency 59022 | (406) 638-2221 |
| Indian Affairs Property/Supply Main Bia Bldg, Crow Agency 59022 | (406) 638-4413 |