| Name | Deductibility Code |
| Apostolate of the Mass Inc. | 4 |
| Before and After School Recreation and Enrichment Program Inc. | -- |
| Church of the Christian Brotherhood | -- |
| Coginchaug Regional High School Scholarship Fund Inc. | -- |
| Coginchaug Valley Education Foundation | -- |
| Community Development Services Inc. | -- |
| Critter Connection Inc. | -- |
| Durham Cooperative Nursery School Assoc Inc. | -- |
| Durham Fair Foundation Inc. Durham Fair Houses | -- |
| Durham Historical Society Inc. | -- |
| Durham Middlefield Cause for Paws Inc. | -- |
| Durham Volunteer Ambulance Corps Inc. | -- |
| Durham Volunteer Fire Company Inc. | -- |
| Friends of the River | -- |
| Furfright Inc. | -- |
| Help Willys Friends Inc. | -- |
| Meriden Amateur Radio Club Inc. | -- |
| Peach Pit Foundation | 4 |
| Public Association of Library Supporters Inc. | -- |
| The Bench Warmers Inc. | -- |
| The Hie Hill Center Inc. | 4 |
| Wild Ones Waystation | -- |