| Name | Deductibility Code |
| Cornerstone Family Church | -- |
| Iowa Aquaculture Association | -- |
| Lampe Trust | 4 |
| Manning Betterment Foundation | -- |
| Manning Community Chest | -- |
| Manning Community Foundation | -- |
| Manning Community School Foundation | -- |
| Manning Community Services Inc. | -- |
| Manning Fire and Rescue Association Inc. | -- |
| Manning Heritage Foundation | -- |
| Manning Regional Healthcare Center | -- |
| Manning Theater Guild | -- |
| Municipal Housing Agency of Manning | -- |
| Warren H Timmerman Charitable Trust | 4 |
| West Central Iowa Health Care Foundation | -- |