| Name | Deductibility Code |
| Academy of Missouri Educational Network of Graduate Dogs Inc. | -- |
| Agape Ministry of Warren County Inc. | -- |
| Agape Ministry of Warrenton Inc. | -- |
| Animal Welfare Association of Warren County | -- |
| Booneslick Area Health Services Inc. | -- |
| Boonslick Region Council of Governments Incorporated | -- |
| Camp Branch Cemetery Association Inc. | 6 |
| Child Evangelism Fellowship Inc. | 1 |
| Concerned Citizens for Animal Control of Warren County | -- |
| Gateway Resource and Conservation Development | -- |
| Gift Angels | -- |
| Htm International Inc. | -- |
| Knights of Columbus-Cardinal Gibbons Charitable Fund Inc. | -- |
| Mercys Hope | 4 |
| Pew Cemetery Association Inc. | 6 |
| Uncompromised Word Center Inc. | -- |
| Wagon Wheel Players | -- |
| Warren Co-Mo Old Threshers Association | -- |
| Warren County Council Against Domestic Violence Inc. | -- |
| Warren County Council on Aging | -- |
| Warren County Fine Arts Council | -- |
| Warren County Historical Society | -- |
| Warren County Sheltered Workshop Inc. | -- |
| Warrenton Christian Church | -- |
| Warrenton Civic Progress Inc. | -- |
| Warrenton Fire Protection District Ladies Auxiliary | -- |
| Warrenton Little League Football Association Inc. | -- |
| Wesa-A-Geh-Ya Zoo | -- |