| Name | Deductibility Code |
| Adams Community Foundation | -- |
| Adams County Conservation Foundation | -- |
| Adams County Fair and Racing Assoc | -- |
| Centurama Historical Society of Adams County | -- |
| Clark and Helen Carmichael Foundation Inc. | 4 |
| Corning Center for the Fine Arts Inc. | -- |
| Corning Opera House Cultural Center | -- |
| Corning Sports Booster Club | -- |
| Corning Youth Club Inc. | -- |
| Creative Corner of Corning Preschool Inc. | -- |
| French Icarian Colony Foundation Inc. | -- |
| Iowa Women in Agriculture | -- |
| Johnny Carson Birthplace Society | -- |
| Kid Care Council | -- |
| Mercy Health Care Foundation | -- |
| Southern Iowa Forage and Livestock Corporation | -- |
| Spread the Word Ministries Incorporated | -- |