| Name | Deductibility Code |
| Mills Family Charitable Tr | 4 |
| Reas Foundation Inc. | -- |
| Simul Legimus Inc. | -- |
| Sturbridge Girls Softball League Inc. | -- |
| Tantasqua Athletic Booster Club | -- |
| Tantasqua Education Foundation Inc. | -- |
| Tantasqua Foundation Inc. | -- |
| Tantasqua Regional Youth Soccer League Ltd. | -- |
| Tri State Living History Association Inc. | -- |
| Word and Prayer Ministries | -- |