| Name | Deductibility Code |
| Calvary Outreach | -- |
| Challis Arts Council Inc. | -- |
| Challis Senior Citizens Inc. | -- |
| Community Alms Ministries | -- |
| Custer County Economic Development Association Inc. | -- |
| Custer County Helping Hands | -- |
| Firstfruits Foundation | 4 |
| Living Waters Ranch Inc. | -- |
| North Custer Historical Society Inc. | -- |
| Salmon River Coalition Inc. | -- |
| The Yankee Fork Gold Dredge Association Inc. | -- |