| Name | Deductibility Code |
| Alturas Assisted Living Centers Inc. | -- |
| Alturas Community Theater Inc. | -- |
| Central Modoc River Center | -- |
| Friends of Modoc County Library | -- |
| Friends of the Modoc National Wildlife Refuge Inc. | -- |
| Mighty Wind Ministries | -- |
| Modoc Charter School Inc. | -- |
| Modoc Child Care Council | -- |
| Modoc County Arts Council Inc. | -- |
| Modoc County Historical Society Inc. | -- |
| Modoc County Little League | -- |
| Modoc Fire Safe Council | -- |
| Modoc Motorsports Association | -- |
| Modoc Scholarship Fund Inc. | 4 |
| Modoc Work Activity Center | -- |
| Modoc Youth Rodeo Association | -- |
| North Cal-Neva Resource Conservation and Development Inc. | -- |
| Resources for Indian Student Education Inc. | -- |
| Sacred Earth Refuge | -- |
| Strong Family Health Center | -- |
| Sunrays of Hope Inc. | -- |
| The Family Child Care Association of Modoc County Inc. | -- |
| Training Employment and Community Help Inc. | -- |
| Vineyard Christian Center | -- |