| Name | Deductibility Code |
| Marshall County Agriculture Association | -- |
| Marshall County Historical Society | -- |
| Melo Lutheran Cemetery Association | 6 |
| Northwest Minnesota Arts Council | -- |
| P K M Electric Cooperative Trust | -- |
| Wao Pto | -- |
| Warren Alvarado Oslo Public School Education Foundation | -- |
| Warren Community Hospital Inc. | -- |
| Warren Horseshoe Club Inc. | -- |
| Warren Pony Sports Booster Club Inc. | -- |
| Warren Senior Citizens Club Inc. | -- |
| Warren Sno Cat Riders Inc. | -- |
| Warren Volunteer Ambulance Services Inc. | -- |