| Name | Deductibility Code |
| Baptist Tabernacle Chruch of Miles City Montana | -- |
| Barn Players | -- |
| Big Sky Behavioral Center Inc. | -- |
| Bill and Charlotte Mathers Family Foundation Inc. | 4 |
| Custer County Art & Heritage Center | -- |
| Custer County Art Center Foundation Inc. | -- |
| Custer County Community Health Center | -- |
| Custer County Educational Foundation Inc. | -- |
| Custer County Family Treatment Court Foundation | -- |
| Custer County Food Bank Inc. | -- |
| Custer County Fund for Animals -ccfa | -- |
| Custer County Rural Volunteer Fire Company | -- |
| Custer County Senior Citizens | -- |
| Custer Network Against Domestic Abuse | -- |
| Developmental Educational Assistance Program of Southeastern | -- |
| Eastern Montana Casa-Gal Inc. | -- |
| Eastern Montana Community Mental Health Center | -- |
| Eastern Montana Industries | -- |
| Education Fund | -- |
| First Lutheran Church Foundation of Miles City Montana | -- |
| Fun2u | -- |
| Knights of Columbus Montana-Lineth Dakota Allstar Football Game | -- |
| L P and Teresa Anderson Foundation | 4 |
| Miles City Area Crimestoppers Inc. | -- |
| Miles City Area Economic Development Council Inc. | -- |
| Miles City Bluegrass Festival Inc. | -- |
| Miles City Caledonian Society Inc. | -- |
| Miles City Concert Association Inc. | -- |
| Miles City Genealogical Society | -- |
| Miles City Little Guy Football League | -- |
| Miles City Meals on Wheels | -- |
| Miles City Nutrition Coalition | -- |
| Miles City Public Library Foundation | -- |
| Miles City Softball Association Inc. | -- |
| Miles City Wrestling Club Inc. | -- |
| Miles City Youth Baseball Assoc | -- |
| Miles City Youth Hockey Association Inc. | -- |
| Miles City Youth Soccer Association | -- |
| Miles Community College Endowment | -- |
| Montana Sheriffs and Peace Officers Association | -- |
| Nibs and Edna Allen Foundation | 4 |
| Northeast Montana Stat Air Ambulance Cooperative | -- |
| Northern Great Plains Section of the Society for Range Management | -- |
| Outlaw Baseball Club | -- |
| Quarter Century Club Inc. | -- |
| Range Riders Inc. | -- |
| Rural Health Development Inc. | 4 |
| Southeastern Montana Health Coalitiion | -- |
| Vision of Light Radio Inc. | -- |
| Wm and Lorene Nefsy Foundation | 4 |