| Name | Address, Zip |
| Clark Fork Soccer Alliance | Po Box 673, 59859-0673 |
| Plains Community Ambulance Inc | Po Box 268, 59859-0268 |
| Mt West Center For Innovation Education And Health Improvement | Po Box 1590, 59859-1590 |
| Plains Youth Softball Association | Po Box 1099, 59859-1099 |
| Plains-paradise Senior Citizens Association Inc | Po Box 935, 59859-0935 |
| Plains-paradise Rural Fire Association | 20 Old Airport Rd, 59859-7655 |
| Wildhorse Sports Association | Po Box 4, 59859-0004 |
| Plains Pickleball Association | Po Box 41, 59859-0041 |
| Camp Bighorn | 1850 Mt Highway 135, 59859-9461 |
| Little Bitterroot Services | Po Box 189, 59859-0189 |
| Plains Booster Club | Po Box 603, 59859-0603 |
| Camas Prairie Neighbors | 220 Webber Ln, 59859-9483 |
| Cancer Network Of Snaders County | Po Box 1311, 59859-1311 |
| Costner Care Family Ministries | 406 W Railroad Ave, 59859-9597 |
| Clark Fork Enrichment Corportion | Po Box 245, 59859-0245 |
| Clark Fork Valley Hospital Foundation Inc | Po Box 768, 59859-0768 |
| Sanders County Club Sports | 4 Hideaway Ln, 59859-9523 |
| Plains Womans Club | Po Box 813, 59859-0813 |
| Committee For Safe Swimming | Po Box 1546, 59859-1546 |
| Sanders County Fair Foundation | Po Box 1546, 59859-1546 |
| Diamond Days Foundation | 125 Cedar Creek Rd, 59859-9567 |
| Plains Library Foundation | Po Box 248, 59859-0248 |
| Plains Hospitals Inc | Po Box 768, 59859-0768 |
| Latin Mass Montana Inc | Po Box 235, 59859-0235 |
| Joint Operation Mariposa | Po Box 261, 59859-0261 |
| Vision Keepers | 121 Dupuis Mill Rd, 59859-9624 |
| Sonoraevangelicalministrieslimited | Po Box 6, 59859-0006 |
| Tandem | 42 Tyler M Rd, 59859-9501 |
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