| Name | Deductibility Code |
| Abner & Eliza Black Memorial Fund | 4 |
| Armina Brownell Library Fund | 4 |
| Community Resources in Service to People Inc. | -- |
| Emma L Schroppel Trust UW Farmers & Merchants State Bk Ttee | 4 |
| Farmers and Merchants Development Fund | 4 |
| First Baptist Church of Winterset Iowa | -- |
| Hal S Chase Family Scholarship Fund | 4 |
| Harold L Smith Memorial Scholarship Fund | 4 |
| John Wayne Birthplace Society Ltd. | -- |
| Lillard-Miller Scholarship Fund Inc. | -- |
| Little Husky Football Inc. | -- |
| Lyla M Lynch Tr | 4 |
| Madison County Antique Association | -- |
| Madison County Covered Bridge Preservation Association Inc. | -- |
| Madison County Elderly Services Inc. | -- |
| Madison County Foundation for Environmental Education | -- |
| Madison County Geneological Society | -- |
| Madison County Health Tr Inc. | -- |
| Madison County Historical Society | 3 |
| Madison County Livestock & Fair Association | -- |
| McDonald-Chase Cemetery Association | 6 |
| McGaffin Field and Track Foundation Inc. | -- |
| Nellie Callahan Scholarship Fund | -- |
| Paul & Mary Griffith Scholarship Fund | 4 |
| The Rolling Hills Fs Foundation | 4 |
| W P and Nelle McClure Scholarship Fund | -- |
| William C and Mary L Krabiel College Opportunity Fund | -- |
| Winterset Area Soccer Club Inc. | -- |
| Winterset Art Center | -- |
| Winterset Band Boosters | -- |
| Winterset Community Educational Foundation | -- |
| Winterset Exchange Friendship Group Inc. | -- |
| Winterset Fire Fighters Association Inc. | -- |
| Winterset Husky Booster Club | -- |
| Winterset Lions Foundation Inc. | -- |
| Winterset Quarterback Club Inc. | -- |
| Word of Life Christian Center Inc. | -- |
| Worthington Cemetery Association Inc. | 6 |