| Name | Deductibility Code |
| Gratiot Agricultural Society | -- |
| Gratiot County Community Foundation | -- |
| Gratiot County Fair for Youth | -- |
| Gratiot County Historical Society | -- |
| Gratiot Physicians Foundation | 4 |
| Greater Gratiot Development Inc. | -- |
| Ithaca Area Historical Society Inc. | -- |
| Senior Activity Building Board Inc. | -- |
| Senior Gratiot Inc. | -- |