| Name | Deductibility Code |
| Bishop of Myra Foundation Inc. | 4 |
| Boys & Girls Club of Richland County Montana | -- |
| Carpenters Church | -- |
| Cedar Foundation Inc. | -- |
| Chemical Injury Institute Foundation | -- |
| Community Health Fitness Center Inc. | -- |
| Companion Animal Rescue of Eastern Montana Inc. | -- |
| Crane Cemetary Association | 6 |
| Dayton Foundation | 4 |
| Doris Sundheim Elliott Memorial Foundation | 4 |
| Eastern Plains Economic Development Corporation | -- |
| Eastern Plains Resource Conservation & Development Inc. | -- |
| Family Farmer Organization Inc. | -- |
| Foundation for Community Care of Richland County Inc. | -- |
| Groskinsky Foundation | 4 |
| Henry Elm Trust | 4 |
| John L and Marilyn J Olson Family Foundation | 4 |
| Literacy Volunteers of America | -- |
| Lone Tree Senior Living | -- |
| Mepa | -- |
| Mondak Historical & Art Society | -- |
| Northeastern Arts Network | -- |
| Rainbow Center Inc. | -- |
| Richland Affordable Housing Corporation | 4 |
| Richland County Coalition Against Domestic Violence Inc. | -- |
| Richland County Commission on Aging Inc. | -- |
| Richland County Emergency Shelter Coalition | -- |
| Richland County Public Libraries Foundation Inc. | -- |
| Richland Opportunities Inc. | -- |
| Richland Youth Hockey Inc. | -- |
| Roi Foundation Inc. | -- |
| Rural Policy Institute | -- |
| Shepherd of the Valley Lutheran Church of Sidney Montana Inc. | -- |
| Sidney Community Education Foundation Inc. | -- |
| Sidney Fire Foundation Inc. | -- |
| Sidney Gymnastics Club | -- |
| Sidney Health Center | -- |
| Sidney Soccer Association | -- |
| Svarre Foundation | 4 |
| Williams Foundation | 4 |