| Name | Deductibility Code |
| American Benedictine Review Inc. | -- |
| Camp Recreation Inc. | -- |
| Dickinson Girls Fastpitch Softball Association | -- |
| Marillac Manor Inc. | -- |
| Richardton Health Center Inc. | -- |
| Richardton Healthcare Foundation | -- |
| Richardton Rural Fire Protection District | -- |
| Richardton Saddle Club Inc. | -- |
| Richardton Taylor Alumni Association | -- |
| St. Marys Catholic Education Foundation | -- |
| St. Thomas Cemetery Board | 6 |