| Name | Deductibility Code |
| American Ref-Fuel Preston Community Fund | 4 |
| Dean Bible Ministries Inc. | -- |
| Friends of the Preston Public Library | -- |
| Norwich Heritage Trust Inc. | -- |
| Order Sons of Hermann of the State of Connecticut | 1,2,6 |
| Palmer Cemetery Association | 6 |
| Poquetanuck Volunteer Fire Dept Inc. | -- |
| Preston Historical Society Inc. | -- |
| Preston Veterans Memorial Pto | -- |
| Spirit Lake Inc. | -- |
| The Preston Public Library | -- |
| The Preston Public Library | -- |