| Name | Deductibility Code |
| Burgess Foundation | -- |
| Burgess Health Center | -- |
| Friends of the Onawa Public Library | -- |
| Loess Hills Historical Society of Monona County Iowa | -- |
| Magic Depot Child Care Center Inc. | -- |
| Maple Valley School Foundation Inc. | -- |
| Monona County Fair Association | -- |
| Onawa Community Foundation | -- |
| Onawa Kiwanis Foundation | -- |
| Spartan Spirit Club Inc. | -- |