| Name | Address, Zip |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| Challis 4-h Polutry Producers | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| 4-h Clubs & Affiliated 4-h Organizations | Po Box 160, 83226-0160 |
| Challis Community Trail Alliance Corp | Po Box 862, 83226-0862 |
| South Cluster Anglers | Po Box 160, 83226-0160 |
| Challis Area Health Center | Po Box 980, 83226-0980 |
| Challis Arts Council Inc | 630 E Main Ave, 83226 |
| Challis Golf & Recreation Assoc | Po Box 413, 83226-0413 |
| Custer County Economic Development Association Inc | Po Box 758, 83226-0758 |
| Challis-mackay High School Baseball Inc | Po Box 1091, 83226-1091 |
| Bernadette Rivera | Po Box 160, 83226-0160 |
| Custer County Builders Club | Po Box 160, 83226-0160 |
| Challis Emts | Po Box 24, 83226-0024 |
| Challis Ski Club Inc | Po Box 1113, 83226-1113 |
| Challis Senior Citizens Inc | Po Box 997, 83226-0997 |
| Salmon River Coalition Inc | 25490 N Highway 93, 83226-4928 |
| Custer County Helping Hands | Po Box 864, 83226-0864 |
| Crosseven Ranches Inc | Po Box 962, 83226-0962 |
| North Custer Historical Society Inc | Po Box 776, 83226-0776 |
| Firstfruits Foundation | Po Box 510, 83226-0510 |
| Samaritians Gift Inc | 24179 Highway 75, 83226-1603 |
| Hot Stuffs | Po Box 160, 83226-0160 |
| Living Waters Ranch Inc | Po Box 1190, 83226-1190 |
| Wings Of Victory International Inc | Po Box 510, 83226-0510 |
| New Life Support Services Inc | Po Box 1408, 83226-1408 |
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