| Name | Deductibility Code |
| 6924th Heritage Association | 6 |
| Church of Christ St. of Mascoutah Inc. | -- |
| Concerned Christians Inc. | -- |
| Consensus Inc. | -- |
| Dandy Dancers Square Dance Club Inc. | 6 |
| Foundation for Mascoutah Schools Inc. | -- |
| Friends of Funedesin Inc. | -- |
| Grange Nursing Home | -- |
| Harvest Tabernacle Ministries | -- |
| Leu Civic Center Inc. | -- |
| Main Street Mascoutah Inc. | -- |
| Mascoutah Aerospace Museum | 4 |
| Mascoutah Cemetary Chapel Inc. | 4 |
| Mascoutah Historical Society Inc. | -- |
| Mascoutah Little Indians Youth Football Program | -- |
| Mascoutah Senior Service | -- |
| Mascoutah Tuesday Womens Club Inc. | -- |
| Means-Morrison Memorial Scholarship Fund Inc. | 4 |
| Midwest Education and Research Center for Family Values | -- |
| National Foundation for Ectodermal Dysplasias | -- |
| Nipwaantiikaani | -- |
| O I L Ministries Inc. | 4 |
| Southwestern Illinois Resource Conservation & Development Council | -- |
| Swifa Childrens Fire Safety House | 4 |
| Team Mascoutah Athletic Association | -- |