| Front Range Christian Ministries | 501(c)(3) | 1994 | $8.7 million | $13.3 million | 2025-06 |
| Littleton Preparatory Charter School | 501(c)(3) | 1998 | $7.6 million | $4.6 million | 2025-06 |
| Society of Economics Geologists Inc | 501(c)(3) | 2001 | $5 million | $23.4 million | 2025-12 |
| Quest Forward Academy Inc | 501(c)(3) | 2016 | $3.9 million | $3.6 million | 2025-06 |
| Havern Center Inc | 501(c)(3) | 1971 | $3.5 million | $7 million | 2025-06 |
| Western Slope Driving Institute Inc | 501(c)(3) | 2014 | $2.2 million | $723,109 | 2025-12 |
| Compassion & Choices Action Network | 501(c)(4) | 2005 | $1.8 million | $13.3 million | 2025-06 |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | $1.2 million | $1.2 million | 2025-06 |
| Fire Foundation of Denver | 501(c)(3) | 2021 | $948,578 | $1.2 million | 2024-12 |
| Vertical Skills Academy | 501(c)(3) | 2014 | $918,453 | $610,791 | 2025-06 |
| Xavier Mission Fund | 501(c)(3) | 2022 | $724,468 | $74,581 | 2024-12 |
| Association of Colorado Independent Schools | 501(c)(3) | 1963 | $612,555 | $614,829 | 2024-12 |
| Oen - Des Moines Prep | 501(c)(3) | 2024 | $515,000 | $4.3 million | 2025-06 |
| Littleton Preparatory Charter School Building Corporation | 501(c)(3) | 2015 | $514,032 | $6.5 million | 2025-06 |
| Quest Forward Charter School - Cedar Rapids | 501(c)(3) | 2025 | $440,000 | $1.5 million | 2025-06 |
| Colorado School Finance Project | 501(c)(3) | 2015 | $425,318 | $701,189 | 2026-06 |
| In Colorado Initiative for Inclusive Higher Education | 501(c)(3) | 2015 | $400,283 | $360,664 | 2025-12 |
| Japanese Business Association of the Rockies | 501(c)(3) | 2006 | $285,875 | $350,820 | 2025-03 |
| Association of Anesthesiologist Assistant Program Directors Inc | 501(c)(3) | 2011 | $249,508 | $446,456 | 2024-12 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $225,255 | $26,083 | 2026-03 |
| Heritage High School Football Booster Club | 501(c)(3) | 2004 | $220,420 | $9,045 | 2024-12 |
| National Association of Corporate Directors | 501(c)(3) | 2003 | $175,690 | $316,001 | 2025-12 |
| Bates Philanthropic Initiative | 501(c)(3) | 2024 | $159,938 | $87,651 | 2025-12 |
| Professional Audiobook Narrators Association Inc | 501(c)(3) | 2024 | $135,113 | $65,175 | 2025-08 |
| Chatfield Grid Iron Club | 501(c)(3) | 2025 | $135,053 | $57,200 | 2025-12 |
| Dakota Ridge Instrumental Music Boosters Organization | 501(c)(3) | 2014 | $129,037 | $108,036 | 2025-06 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $80,725 | $1 | 2026-04 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $65,950 | $1,037 | 2026-04 |
| Denver Field Ornithologists Inc | 501(c)(3) | 1936 | $65,591 | $119,623 | 2025-12 |
| Normandy Elementry School Pto Inc | 501(c)(3) | 1996 | $64,833 | $91,964 | 2026-06 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $64,634 | $49,012 | 2026-03 |
| Collegiate Academy of Colorado Foundation | 501(c)(3) | 1997 | $61,169 | $67,907 | 2025-06 |
| Empowered Health Education Center | 501(c)(3) | 2022 | $60,819 | $38,874 | 2024-12 |
| Littleton 1650 Scholarship Charity Fund | 501(c)(3) | 2000 | $59,830 | $385,990 | 2026-03 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $55,289 | $22,545 | 2025-06 |
| The Dartmouth Association of the Rocky Mountains Inc | 501(c)(3) | 2009 | $44,208 | $117,941 | 2025-06 |
| Powderhorn Elementary Pto | 501(c)(3) | 2023 | $43,431 | $39,998 | 2025-06 |
| Horizons Colorado | 501(c)(3) | 2025 | $35,957 | $27,903 | 2025-12 |
| Littleton High School Band Wagon | 501(c)(3) | 2022 | $18,630 | $16,073 | 2025-12 |
| Kobzar Ukrainian Heritage School | 501(c)(3) | 2025 | $17,534 | $3,444 | 2024-12 |
| Quest Forward Academy Student Council | 501(c)(3) | 2023 | $5,276 | $4,073 | 2024-12 |
| Grant Ranch School Pto | 501(c)(3) | 2003 | $3,199 | $8,471 | 2026-06 |
| National Academy of Neuropsychology Foundation | 501(c)(3) | 2002 | $2,442 | $3,712 | 2025-12 |
| Opportunity Education Network | 501(c)(3) | 2025 | $1 | $7.5 million | 2024-12 |
| Aces Okanagan Foundation | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Aquinas Foundation | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Basics Team Foundation Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Bear Creek Boys Volleyball Boosters | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Beta Legacy Fund | 501(c)(3) | 2026 | | | |
| Chatfield Boys Lacrosse Booster Club | 501(c)(3) | 2023 | $0 | $0 | 2025-09 |
| Chatfield Senior High School Cross Country Booster Club Inc | 501(c)(3) | 2026 | | | |
| Chatfield Senior High Softball | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Chatfield Youth Football Association | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Colorado Credit Union Foundation | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Colorado Educational Opportunities Foundation | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Columbine Boys Lacrosse Association | 501(c)(3) | 1999 | $0 | $0 | 2026-06 |
| Columbine Girls Lacrosse Booster Club | 501(c)(3) | 2018 | $0 | $0 | 2026-05 |
| Columbine High School Girls Basketball Boosters | 501(c)(3) | 2019 | $0 | $0 | 2026-05 |
| Dakota Ridge Volleyball Boosters | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Dakota Ridge Womens Lacrosse Boosters | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Deer Creek Middle School Pto | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| Denver Texas A&M Club Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Drupal Colorado Inc | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| El Shaddai Christian Academy | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Falcon Bluffs Middle School Pto | 501(c)(3) | 2012 | $0 | $0 | 2024-07 |
| Foundation for Surgical Technology | 501(c)(3) | 1998 | $0 | $0 | 2023-12 |
| Front Range Falcon Foundation | 501(c)(3) | 2023 | $0 | $0 | 2026-06 |
| Games for Grades | 501(c)(3) | 2024 | | | |
| Global Connect-Ed Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| HHS Golf Boosters | 501(c)(3) | 2025 | | | |
| Heritage High School Gymnastics Booster Club | 501(c)(3) | 2019 | $0 | $0 | 2026-05 |
| I Love America Education Foundation | 501(c)(3) | 1996 | $0 | $0 | 2025-12 |
| James E Pollmiller Foundation | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Jean M Pilon Scholarship Fund | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Ken Carl Middle School Pto | 501(c)(3) | 2012 | $0 | $0 | 2026-07 |
| Kingdom Enlightenment Scholarship Foundation | 501(c)(3) | 2023 | | $1.7 million | 2025-05 |
| Larry and Linda Arneson Foundation | 501(c)(3) | 2020 | | $1 | 2025-12 |
| Learnquiet Colorado | 501(c)(3) | 2025 | $0 | $0 | 2025-09 |
| Lee Nordine Scholarship | 501(c)(3) | 2022 | | $32,048 | 2025-12 |
| Littleton Homeschool Collective | 501(c)(3) | 2026 | | | |
| Littleton Police Citizen Academy Alumni Association | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Littleton Public Schools Parent Teacher Organiation | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | $0 | $0 | 2025-06 |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Littleton Public Schools Parent Teacher Organization | 501(c)(3) | 1999 | | | |
| Macaulay Wank Scholarship Foundation | 501(c)(3) | 2025 | | $48,846 | 2025-12 |
| Mortensen Elementary Parent Teacherorganization | 501(c)(3) | 2011 | $0 | $0 | 2026-06 |
| Music Teachers National Association Inc | 501(c)(3) | | $0 | $0 | 2026-06 |
| National Lutheran Scholarship Fund | 501(c)(3) | 2025 | | | |
| Oen - Davenport Prep | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Our Lady of Victory Foundation | 501(c)(3) | 2024 | | | |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2026-04 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-06 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2026-04 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2026-07 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2026-03 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2026-07 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2026-05 |
| Parent Booster USA Inc | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Physicians for Ancestral Health | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Ray Barron Strength and Honor Fund | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Rock Canyon High School Touchdown C Lub Inc | 501(c)(3) | 2026 | $0 | $0 | 2022-06 |
| Rocky Mountain Automotive Teacher Society | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Roxborough Area Historical Society | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Ryan Keller Memorial Gymnastics Scholarship | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Sarah James Memorial Scholarship Fund | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Scudder Foundation | 501(c)(3) | 2019 | | $143,140 | 2025-12 |
| South Jeffco Montessori Charter School | 501(c)(3) | 2001 | | | |
| Spellbinders of Littleton | 501(c)(7) | 2020 | $0 | $0 | 2026-06 |
| Stony Creek Elementary Pto | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Summit Ridge Middle School Pto Inc | 501(c)(3) | 2023 | $0 | $0 | 2026-07 |
| The Inquiry Commons | 501(c)(3) | 2026 | | | |
| United Heroes of America Inc | 501(c)(3) | 2024 | | | |
| Uniting 4 Kids | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |