| Name | Deductibility Code |
| Androgen Insensitivity Syndrome Support Group | -- |
| Antioch Baptist Church Inc. | -- |
| Apostolic Church Inc. | -- |
| Barbara Baker Satterwhite Education Trust | -- |
| Bible Concepts Inc. | -- |
| Camp Lu-Jo Kismif Inc. | -- |
| Carol Paris Ministries | -- |
| Cedar Hills Baptist Youth Camp | -- |
| Charismatic Training Center | -- |
| Children of the King Inc. | -- |
| Chisholm Trail Arts Council Inc. | -- |
| Chisholm Trail Heritage Association | -- |
| Chisholm Trail Heritage Center Association | -- |
| Chisholm Trail Hospice Organization | -- |
| Chisholm Trail Municipal Band Incorporated | -- |
| Christians Concerned | -- |
| Claud Gill Arena Association | 4 |
| Comanche Area Economic Development Foundation | -- |
| Community Interested in Todays Youth | -- |
| Croy Foundation | 4 |
| Davida Foundation | -- |
| Douglas Eastside Senior Citizens Center | -- |
| Douglass Community Center Organization Inc. | -- |
| Duncan Area Economic Development Foundation | -- |
| Duncan Community Residence Inc. | -- |
| Duncan Group Homes | -- |
| Duncan Literacy Council Incorporated | -- |
| Duncan Little Theatre Incorporated | -- |
| Duncan Public Schools Foundation | -- |
| Duncan Regional Hospital Health Foundation | -- |
| Duncan Regional Hospital Inc. | -- |
| Duncan Senior Citizens Capital Fund Trust | -- |
| Duncan Senior Citizens Center Inc. | -- |
| First Baptist Church Child Development Center Inc. | -- |
| First Presbyterian Church of Duncan Oklahoma | -- |
| Friends of the Duncan Public Library Inc. | -- |
| Gabriels House Inc. | -- |
| Global Resq Incorporated | -- |
| Hugon Family Foundation | 4 |
| International Rural Water Association | -- |
| Joe & Jean Palmer Endowment Fund | 4 |
| Lynn Colbert Charitable Foundation | 4 |
| Main Street Duncan Inc. | -- |
| McCasland Foundation | 4 |
| On the Chisholm Trail Association | 3 |
| Power Shop Inc. | -- |
| Prairie House Foundation | -- |
| Project Graduation of Duncan Charitable Trust | -- |
| Richardson Scholarship Trust | 4 |
| Rivers of Life International Ministries Incorporated | -- |
| Scott Meador Ministries | -- |
| Simmons Center Foundation | -- |
| Sought Out Ministry | -- |
| South Central Oklahoma Community Development Foundation Inc. | -- |
| South Central Oklahoma Regional Disposal Inc. | -- |
| Stephens County Crime Stoppers Inc. | -- |
| Stephens County Genealogical Society Inc. | -- |
| Stephens County Historical Society | -- |
| Stephens County Humane Society | -- |
| Teen Round-Up Inc. | -- |
| The Duncan Little League Club | -- |
| Tom and Phyllis Macasland Foundation | 4 |
| United Way of Stephens County Inc. | -- |
| Wheels for Kids Inc. | -- |
| Womens Haven | -- |
| Youth Services for Stephens County Inc. | -- |