| Name | Deductibility Code |
| City of Mitchell Foundation | -- |
| Joe & Babe Sandford Scholarship Foundation | 4 |
| Mitchell Area Foundation Inc. | -- |
| Mitchell Foundation for Academic Excellence Inc. | -- |
| Mitchell Public Library Foundation | -- |
| Sons of the American Legion Attached to Mitchell Post 124 | 6 |
| Veteren and Military Families Emergency Relief Organization | -- |