| Name | Deductibility Code |
| Hamlin Cemetery Association Inc. | 6 |
| Hamlin Church of Christ | -- |
| Hamlin Community Food Bank | -- |
| Hamlin Economic Development Corporation | -- |
| Hamlin Hospital District Hamlin Memorial Hospital | 6 |
| Hamlin Senior Citizens Organization Inc. | -- |
| Hamlin United Way | -- |
| Historical Bath Trail Association | -- |
| Preservation League of Hamlin | -- |