| Name | Deductibility Code |
| Barnstable Youth Hockey Association Inc. | -- |
| Breslow Fam Foundation Tr | 4 |
| Cape Cod Academy Inc. | -- |
| Cape Cod Crush Hockey Inc. | -- |
| Cape Cod Dressage Association Inc. | -- |
| Cape Cod Horticultural Society Inc. | -- |
| Cape Cod Writers Center Inc. | -- |
| Computers for Seniors Inc. | -- |
| Cotocheset Historic Preservation Trust Inc. | -- |
| E J McCarthy Foundation | 4 |
| Friends of the Barnstable County Human Rights Commission | -- |
| Friends of West Bay Inc. | -- |
| Gregory Family Foundation Inc. | 4 |
| Hunt for the Cure | -- |
| Islamic Center of Cape Cod Inc. | -- |
| Joan Bentinck-Smith Charitable Foundation | 4 |
| New England Society for Abandoned Animals Inc. | -- |
| Osterville Elementary School Pto | -- |
| Osterville Free Library Corporation | -- |
| Osterville Garden Club Inc. Charitable Education Trust | -- |
| Osterville Historic Places Conservation Trust | 4 |
| Osterville Historical Society Inc. | -- |
| Oyster Harbors Club Caddy Scholarship Fund Inc. | -- |
| Pemberton Family Foundation Inc. | 4 |
| Saint Anthonys Charity Club of Osterville Inc. | -- |
| St. Peters Church Nursery School Inc. | -- |
| The Nicholas and Marion Madonna Foundation | 4 |
| Three Bays Preservation Inc. | -- |