| Name | Deductibility Code |
| Able Child Parents for Label & Drug Free Education | -- |
| American Friends of Maungatautari | 4 |
| Annandale Troupe Inc. | -- |
| Cary Institute of Ecosystem Studies Inc. | -- |
| Dutchess Day School | -- |
| Dutchess Land Conservancy Inc. | -- |
| Dyson Foundation | 4 |
| Equine Escape Rescue Ltd. | -- |
| Eve Propp Family Foundation Inc. | 4 |
| George Bird Grinnell American Indian Fund | 4 |
| George T Whalen Jr Foundation Inc. | 4 |
| Hathaway Family Foundation | 4 |
| Hearts and Hands Together Inc. | -- |
| Hudson Harvest Inc. | -- |
| Innisfree Foundation Inc. Attn Maril Bialousz | 3 |
| Katherine Bontecou Memorial Charitable Tr | 4 |
| Kitchawan Institute Inc. | 4 |
| Miles End Equine Assisted Learning Center Inc. | -- |
| Millbrook Arts Group Inc. | -- |
| Millbrook Central School District Educational Foundation Inc. | -- |
| Millbrook Early Childhood Center | -- |
| Millbrook Engine & Hook & Ladde Company 1 | -- |
| Millbrook Free Library | -- |
| Millbrook Rotary Foundation | -- |
| Millbrook School | -- |
| Millbrook Sports Boosters Inc. | -- |
| Millbrook Tribute Garden Inc. | 4 |
| Nine Partners Burial Ground Association | 6 |
| Plymouth Hill Foundation | 4 |
| Richard Allan Shankman Memorial Fund Inc. | 4 |
| Solution Focused Brief Therapy Association | -- |
| Sylsam Foundation Inc. | 4 |
| Town of Washington Historical Society | -- |
| Washington Hollow Cemetery Association Inc. | 6 |