| Name | Deductibility Code |
| Benincasa Inc. | -- |
| Camp Good Days & Special Times Inc. | -- |
| Camp Good Days and Special Times Foundation Inc. | -- |
| Honeoye Falls-Mendon Youth Baseball League Inc. | -- |
| Hughes Family Foundation | 4 |
| Jennifer Linscott Tietgen Family Foundation Inc. | 4 |
| Mendon Community Nursery School | -- |
| Mendon Fire Department Inc. | -- |
| Mendon Foundation Inc. | -- |
| Mendon Manor Inc. | 4 |
| Rochester Cross Country Ski Foundation | -- |