| Name | Deductibility Code |
| Boys & Girls Club of Mathis and Surrounding Areas | -- |
| Casa De Oracion Iglesia Del Senor Jesus | -- |
| Cenizo Hill Cemetery Association | 6 |
| Cenizo Hill Cemetery Foundation | 6 |
| Iglesia De Cristo En Calle Saint Mary | -- |
| Jeremiah Group Incorporated | -- |
| Mathis Area A-H Show Boosters Inc. | -- |
| Mathis Clubs and Library | -- |
| Mathis Economic Development Corporation | -- |
| Mathis Volunteer Ambulance Service | -- |
| New Testament Fellowship Full Gospel Church | -- |
| Open Door Church Inc. | -- |
| Rapha Fellowship | -- |
| San Patricio Restoration Society Inc. | -- |
| Victory Ministries of Mathis Texas Inc. | -- |