| Name | Deductibility Code |
| 28th Massachusetts Volunteer Infantry | -- |
| Amazing Grace Ministries | -- |
| Animal Shelter Inc. | -- |
| East Lake Waushacum Association Inc. | -- |
| Ellen M Leach Memorial Home Inc. | 4 |
| F Troop Incorporated | -- |
| Faith House Inc. | -- |
| Farmland Institute of Agricultural Preservation Inc. | -- |
| First Parish Church -unitarian- | -- |
| Friends of Greg Croteau Inc. | -- |
| Friends of the Conant Public Library Inc. | -- |
| George A Ramlose Foundation Inc. | 4 |
| Houghton Elementary School Parent Teacher Organization | -- |
| Jessica Marie Ramey Catholic Charitable Foundation | 4 |
| Joseph & Agatha Sicari Charitable Tr | 4 |
| Lankton Family Foundation Inc. | 4 |
| Leominster Bruins Dekhockey | -- |
| Marys Little Lamb Association Inc. | -- |
| Massachusetts State Police Memorial Trust | -- |
| Reginald A Young Charitable Foundation | 4 |
| Robbins Institute for Speech Correction Inc. | -- |
| Ryan Gascoyne Charitable Foundation | -- |
| Sterling Chocksett Club | -- |
| Sterling Education Association Inc. | -- |
| Sterling Ems Inc. | -- |
| Sterling Firefighters Association Inc. | -- |
| Sterling Garden Club Inc. | -- |
| Sterling Historical Society Inc. | -- |
| Sterling Land Trust Inc. | -- |
| Sterling Music Exchange | -- |
| Sterling Youth Soccer Association | -- |
| The Christ Center Inc. | -- |
| The New England Youth Ensemble Inc. | -- |
| Wayward Paws Inc. | -- |