| Name | Deductibility Code |
| Astronomical Institute for Research and Education | 4 |
| Christian Training Center Inc. | -- |
| Drummond Family Foundation | 4 |
| First Baptist Church | -- |
| Jack Little Foundation for Aid/To the Deaf to the Deaf | 4 |
| Madill Alumni Educational Foundation | -- |
| Madill Community Day Care Center Assn Inc. | -- |
| Madill Roundup Club | -- |
| Madill-Marshall County Library Endowment Trust | -- |
| Marshall Co of Ok Genealogy Historic Society | -- |
| Marshall County Beautiful Inc. | -- |
| Marshall County Dui Schoolinc | -- |
| Marshall County Fair Board | -- |
| Marshall County Family Support Services Inc. | -- |
| Marshall County Hospital Foundation of Marshall County Oklahoma | -- |
| Marshall Memorial Hospital | -- |
| Pettijohn Springs Christian Camp | -- |
| Right2live Animal Shelter & Rescue Inc. | -- |
| Sid and Jane Willis Foundation | 4 |
| Whitestone Foundation | -- |