| 1 | Duncan Regional Hospital INC | Health Care | $290.2M | $271.0M |
| 2 | National Rural Water Association | Unclassified | $106.4M | $89.1M |
| 3 | Lynn Colbert Charitable Foundation | Unclassified | $13.6M | $51.0M |
| 4 | Think Ability INC | Unclassified | $10.7M | $6.7M |
| 5 | Duncan Area Economic Development Foundation | Community Improvement & Capacity Building | $6.3M | $28.1M |
| 6 | Simmons Center Foundation | Unclassified | $2.8M | $5.2M |
| 7 | Helen Marie Lewis Medical Research Foundation | Philanthropy, Voluntarism & Grantmaking | $2.2M | $2.6M |
| 8 | McCasland Foundation INC | Community Improvement & Capacity Building | $2.0M | $34.3M |
| 9 | Tilley Foundation | Philanthropy, Voluntarism & Grantmaking | $1.1M | $3.2M |
| 10 | On the Chisholm Trail Association | Philanthropy, Voluntarism & Grantmaking | $997K | $6.3M |
| 11 | Duncan Regional Hospital Health Foundation | Health Care | $718K | $1.8M |
| 12 | Jexal Foundation | Philanthropy, Voluntarism & Grantmaking | $603K | $16.5M |
| 13 | Safe Center INC | Human Services | $561K | $732K |
| 14 | Harvey House Family Charitable Foundation | Philanthropy, Voluntarism & Grantmaking | $475K | $1.9M |
| 15 | Duncan Community Residence INC | Human Services | $428K | $282K |
| 16 | Charis Center INC | Human Services | $421K | $841K |
| 17 | Beautiful Day Foundation | Human Services | $419K | $736K |
| 18 | Stephens County Humane Society | Animal-Related | $418K | $512K |
| 19 | First Baptist Church Childdevelopment Center INC | Education | $334K | $98K |
| 20 | Stephens County Historical Society & Museum | Unclassified | $331K | $596K |
| 21 | Duncan Lodge No 2202 Loyal Order of Moose | Unclassified | $328K | $1.5M |
| 22 | Gabriels House Foundation INC | Education | $327K | $1.2M |
| 23 | Chisholm Trail Heritage Center Association | Arts, Culture & Humanities | $314K | $377K |
| 24 | United Way of Stephens County INC | Philanthropy, Voluntarism & Grantmaking | $273K | $548K |
| 25 | Duncan Public Schools Foundation | Unclassified | $261K | $1.2M |
| 26 | Social Ecological Economic Development Corporation | Employment | $253K | $37K |
| 27 | Gabriels House INC | Human Services | $244K | $101K |
| 28 | Toy Shop of Duncan | Human Services | $226K | $447K |
| 29 | Duncan Chamber of Commerce Incorporated | Unclassified | $177K | $177K |
| 30 | Christians Concerned | Human Services | $161K | $462K |
| 31 | Chisholm Trail Arts Council INC | Arts, Culture & Humanities | $147K | $288K |
| 32 | Duncan Association of Realtors INC | Unclassified | $147K | $251K |
| 33 | Main Street Duncan INC | Community Improvement & Capacity Building | $115K | $113K |
| 34 | One True Light INC | Human Services | $102K | $210K |
| 35 | Rotary International | Unclassified | $101K | $88K |
| 36 | Water Industry Advancement and Sustainability Institute | Environment | $100K | $102K |
| 37 | Project Graduation of Duncan Charitable Trust | Education | $93K | $1K |
| 38 | Duncan Little Theatre Incorporated | Arts, Culture & Humanities | $87K | $310K |
| 39 | Duncan Literacy Council Incorporated | Unclassified | $72K | $87K |
| 40 | Oklahoma Farm Bureau | Unclassified | $67K | $294K |
| 41 | Lifes Hope INC | International, Foreign Affairs & National Security | $64K | $55K |
| 42 | International Association of Lions Clubs | Community Improvement & Capacity Building | $63K | $38K |
| 43 | Kiwanis International INC | Unclassified | $62K | $268K |
| 44 | Agape Freedom Ministries INC | Religion-Related | $55K | $87K |
| 45 | Von Hawks Rising | Philanthropy, Voluntarism & Grantmaking | $39K | $32K |
| 46 | Joe & Jean Palmer Endowment Fund | Philanthropy, Voluntarism & Grantmaking | $39K | $308K |
| 47 | Duncan Gun Club | Unclassified | $16K | $227K |
| 48 | Children of the King INC | Human Services | $16K | $12K |
| 49 | Crosswind Horizons Foundation | Community Improvement & Capacity Building | $10K | $9K |
| 50 | Turning Red Lights Green Foundation | Education | $8K | $5K |
| 51 | Childrens Montage | Education | $8K | $2K |
| 52 | Barbara Baker Satterwhite Education Trust | Unclassified | $6K | $40K |
| 53 | Richardson Scholarship Trust | Unclassified | $5K | $24K |
| 54 | Surgical Extraction Foundation | Health Care | $750 | $43K |
| 55 | Maurer Family Foundation | Philanthropy, Voluntarism & Grantmaking | $42 | $850 |
| 56 | Tom and Phyllis Macasland Foundation | Philanthropy, Voluntarism & Grantmaking | $5 | $101 |
| 57 | Charismatic Training Center | Unclassified | $0 | $0 |
| 58 | Camp Waluhi Yi Association | Recreation & Sports | $0 | $0 |
| 59 | Order of Eastern Star of Oklahoma | Unclassified | $0 | $0 |
| 60 | Chisholm Trail Soccer Association | Recreation & Sports | $0 | $0 |
| 61 | Freedom Biker Church of Oklahoma INC | Religion-Related | $0 | $0 |
| 62 | Oklahoma Home and Community Education INC | Unclassified | $0 | $0 |
| 63 | Oklahoma Home and Community Education INC | Unclassified | $0 | $0 |
| 64 | Oklahoma Home and Community Education INC | Unclassified | $0 | $0 |
| 65 | Oklahoma Home and Community Education INC | Unclassified | $0 | $0 |
| 66 | Beaver Creek Cowboy Church | Religion-Related | $0 | $0 |
| 67 | Rock Island 905 Historical Society of Duncan Ok | Arts, Culture & Humanities | $0 | $0 |
| 68 | Duncan Council for the Blind Club | Diseases, Disorders & Medical Disciplines | $0 | $0 |
| 69 | Justuff 4 Life INC | Community Improvement & Capacity Building | $0 | $0 |
| 70 | Stephens County Ag Booster Club | Youth Development | $0 | $0 |
| 71 | Elite Defense Krav Maga INC | Recreation & Sports | $0 | $0 |
| 72 | Cornerstone Assembly of God | Unclassified | $0 | $0 |
| 73 | Pathways to a Healthy Stephens County INC | Food, Agriculture & Nutrition | $0 | $0 |
| 74 | Shine Homeschool Co Op in Duncan | Education | $0 | $0 |
| 75 | Fc Serve Central INC | Human Services | $0 | $0 |
| 76 | Marlow Wrestling Booster Club | Recreation & Sports | $0 | $0 |
| 77 | First Christian Church | Unclassified | $0 | $0 |
| 78 | First Presbyterian Church of Duncan Oklahoma | Unclassified | $0 | $0 |
| 79 | Good Shepherd Lutheran Church | Unclassified | $0 | $0 |
| 80 | Duncan Senior Citizens Center INC | Unclassified | $0 | $0 |
| 81 | Heritage Oaks Church of the Nazarene | Unclassified | $0 | $0 |
| 82 | Youth Services for Stephens County INC | Human Services | $0 | $0 |
| 83 | Douglas Eastside Senior Citizens Center | Human Services | $0 | $0 |
| 84 | South Central Oklahoma Community Development Foundation INC | Unclassified | $0 | $0 |
| 85 | First Assembly of God | Unclassified | $0 | $0 |
| 86 | West Side Christian Church | Unclassified | $0 | $0 |
| 87 | Rivers of Life International Ministries Incorporated | Unclassified | $0 | $0 |
| 88 | Chisholm Trail Municipal Band Incorporated | Unclassified | $0 | $0 |
| 89 | Bethel Assembly of God | Unclassified | $0 | $0 |
| 90 | Stephens County Genealogical Society INC | Unclassified | $0 | $0 |
| 91 | National Ambucs INC | Unclassified | $0 | $0 |
| 92 | Stephens County Post No 11 of Amvets of Oklahoma | Public & Societal Benefit | $0 | $0 |
| 93 | Duncan Chapt No 18 Women of the Moose | Unclassified | $0 | $0 |
| 94 | International Association of Fire Fighters | Unclassified | $0 | $0 |
| 95 | Friends of the Duncan Public Library INC | Education | $0 | $0 |
| 96 | Stephens County Crime Stoppers INC | Unclassified | $0 | $0 |
| 97 | Tops Club INC | Health Care | $0 | $0 |
| 98 | Main Street House of Prayer | Unclassified | $0 | $0 |
| 99 | Antioch Baptist Church INC | Unclassified | $0 | $0 |
| 100 | Church of God of Prophecy Bible Place | Unclassified | $0 | $0 |