Data / Nonprofits / Colorado / Mutual and membership benefit
Mutual and membership benefit nonprofits in Colorado: 281 registered with the IRS
281 mutual and membership benefit nonprofits are registered with the IRS in Colorado, 32 of them 501(c)(3) charities; the 67 that report revenue took in $53.4 million. The most are in Denver (25), Englewood (19), Colorado SPGS (16). The largest by revenue: Denver Firefighters Health & Wellness Benefits Trust ($21.4 million), Denver Theater Stage Emp Union Local 7 Health and Welfare Trust Fund ($8.5 million), Arkansas Groundwater and Reservoir Association ($3.6 million).
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Every organization, largest by revenue first
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Denver Firefighters Health & Wellness Benefits Trust | Denver | 501(c)(9) | 2025 | $21.4 million | $2 million | 2024-12 |
| Denver Theater Stage Emp Union Local 7 Health and Welfare Trust Fund | Denver | 501(c)(9) | 2017 | $8.5 million | $17.5 million | 2025-12 |
| Arkansas Groundwater and Reservoir Association | Fowler | 501(c)(12) | 2000 | $3.6 million | $7.4 million | 2025-12 |
| Scottish Rite Foundation | Denver | 501(c)(3) | 1954 | $2 million | $39.1 million | 2025-12 |
| Aurora Police Retiree Health Fund | Englewood | 501(c)(9) | 2024 | $1.9 million | $5.8 million | 2025-12 |
| Aurora Fire Fighters Retiree Health Fund | Englewood | 501(c)(9) | 2000 | $1.5 million | $12.2 million | 2024-12 |
| El Pomar Foundation Employee Benefit Trust | Colorado SPGS | 501(c)(9) | 1999 | $1.3 million | $1 million | 2025-12 |
| Larimer County Funded Health Reimbursement Arrangement Veba Tru | Fort Collins | 501(c)(9) | 2013 | $1.3 million | $5.7 million | 2025-12 |
| Roaring Fork Water and Sewer Company | Basalt | 501(c)(12) | 2013 | $1.1 million | $1.5 million | 2024-12 |
| Logan Well Users Inc | Sterling | 501(c)(12) | 2004 | $888,980 | $1 million | 2025-12 |
| Hemp Beverage Alliance | Lakewood | 501(c)(6) | 2025 | $804,086 | $313,722 | 2025-06 |
| Homestead Water Company | Evergreen | 501(c)(12) | 2015 | $767,005 | $3 million | 2024-12 |
| American Federation of Human Rights | Larkspur | 501(c)(10) | 2003 | $708,720 | $4.3 million | 2026-05 |
| Vail Memorial Park Foundation | Vail | 501(c)(13) | 2004 | $628,198 | $2.9 million | 2024-12 |
| Northwest Airlines Section 1114 Veba Trust | Pueblo | 501(c)(9) | 2008 | $556,242 | $10.6 million | 2025-04 |
| Denver Chapter 145 the Order of Alpha | Denver | 501(c)(10) | 2011 | $478,223 | $2.8 million | 2025-12 |
| Longmont Cemetery Association | Longmont | 501(c)(13) | 2023 | $467,774 | $6.3 million | 2025-06 |
| Lower Logan Well Users Inc | Sterling | 501(c)(12) | 2004 | $464,657 | $575,467 | 2025-12 |
| International Alliance of Theatrical Stage Employees Local 7 | Denver | 501(c)(9) | 2011 | $383,072 | $1 million | 2025-12 |
| Ensemble Innovation Ventures | Greenwood VLG | 501(c)(4) | 2019 | $318,288 | $17.7 million | 2025-12 |
| Anderson Ditch Company | Boulder | 501(c)(12) | 2001 | $258,011 | $721,159 | 2025-12 |
| Eccv Water and Sanitation District Veba Health Savings Trust | Aurora | 501(c)(9) | 2016 | $222,499 | $1.8 million | 2025-12 |
| Conifer Sanitation Association | Greenwood VLG | 501(c)(12) | 2007 | $217,994 | $1.1 million | 2025-12 |
| Site Mountain West | Boulder | 501(c)(3) | 2021 | $204,522 | $134,679 | 2025-12 |
| Placerville Volunteer Fire Department Company Inc | Placerville | 501(c)(3) | 2024 | $198,479 | $233,713 | 2025-12 |
| Si Johnson Ditch Company | Aspen | 501(c)(12) | 2014 | $183,502 | $426,490 | 2024-12 |
| Fraternal Order of Police Grand Lodge | Parker | 501(c)(8) | 2024 | $182,756 | $74,607 | 2024-12 |
| Broadway Merchant Association | Denver | 501(c)(3) | 2022 | $165,747 | $11,627 | 2025-12 |
| Granada Water Association | Lamar | 501(c)(12) | 2007 | $165,084 | $1.3 million | 2024-12 |
| West Meadows Mutual Ditch Company | Telluride | 501(c)(12) | 1999 | $143,988 | $48,956 | 2025-12 |
| Rocky Mountain Association of Public Insurance Adjusters Inc | Westminster | 501(c)(6) | 2014 | $125,238 | $114,212 | 2025-12 |
| Huajatolla Valley Estates Incorporated | La Veta | 501(c)(12) | 2007 | $124,428 | $637,047 | 2025-12 |
| Sons of Italy in America | Wheat Ridge | 501(c)(8) | 1941 | $121,126 | $581,519 | 2024-12 |
| Catlin Augmentation Association Inc | Fowler | 501(c)(12) | 2014 | $120,586 | $62,794 | 2025-09 |
| Hasty Water Company | Hasty | 501(c)(12) | 2002 | $117,145 | $89,357 | 2025-03 |
| Animas Valley Ditch & Water Company | Durango | 501(c)(12) | 2018 | $108,007 | $271,729 | 2024-12 |
| Bachelor Switch Water Users Association | Ouray | 501(c)(12) | 1976 | $102,300 | $113,655 | 2025-12 |
| Cubano Charity Golf Inc | Colorado SPGS | 501(c)(3) | 2022 | $101,424 | $9,668 | 2025-12 |
| Aurora Lodge No 1824 Loyal Order of the Moose Incorporated | Aurora | 501(c)(8) | 2026 | $100,441 | $178,202 | 2026-04 |
| Morgan-Prewitt Reservoir Company | Fort Morgan | 501(c)(12) | 2013 | $92,971 | $385,851 | 2024-12 |
| Davidson Ditch and Reservoir Company | Longmont | 501(c)(12) | 2024 | $90,791 | $240,628 | 2025-12 |
| Alpha Phi Gamma | Denver | 501(c)(7) | 2018 | $89,688 | $129,631 | 2025-12 |
| Lawrence N Greenleaf Masonic Building Association | Centennial | 501(c)(3) | 2023 | $84,994 | $2.2 million | 2023-12 |
| Savio House Employee Medical Plan Trust | Denver | 501(c)(9) | 2003 | $83,214 | $1.6 million | 2024-12 |
| Rocky Mountain Chevra Kaddisha | Denver | 501(c)(3) | 2008 | $79,477 | $52,735 | 2024-12 |
| Ignacio Allison Oxford Cemetery District | Ignacio | 501(c)(13) | 2005 | $76,272 | $167,748 | 2024-12 |
| Fop Headwaters Lodge 71 | Hot SLPHR SPR | 501(c)(8) | 2025 | $74,160 | $1 | 2025-12 |
| St Mary Cemetery Association | Walsenburg | 501(c)(13) | 2006 | $71,330 | $560,459 | 2025-12 |
| Sociedad Proteccion Muta de | Antonito | 501(c)(10) | 2013 | $58,951 | $363,000 | 2024-12 |
| Telluride Womens Network Inc | Telluride | 501(c)(7) | 2025 | $58,611 | $21,921 | 2025-12 |
| Missouri Heights-Mountain Meadow Irrigation Company | Carbondale | 501(c)(5) | 2000 | $54,514 | $99,527 | 2025-12 |
| Conifer Water Association | Greenwood VLG | 501(c)(12) | 2007 | $53,762 | $247,786 | 2025-12 |
| Grand County Mutual Ditch and Reservoir Company | Winter Park | 501(c)(12) | 2009 | $49,194 | $3.8 million | 2019-12 |
| American Adjuster Association Inc | Denver | 501(c)(6) | 2022 | $46,450 | $41,799 | 2024-12 |
| Horse Creek Water Users Association | Rush | 501(c)(12) | 2001 | $43,433 | $131,702 | 2025-12 |
| Bauer Lakes Water Company | Mancos | 501(c)(12) | 2012 | $37,363 | $92,724 | 2025-12 |
| Morrisania Water Supply Company | Parachute | 501(c)(12) | 2022 | $35,619 | $301,027 | 2025-12 |
| Rocky Mountain Cigar Night Charity Fund | Palmer Lake | 501(c)(3) | 2023 | $35,347 | $4,327 | 2023-12 |
| Knights of Columbus Council 3285 | Brighton | 501(c)(8) | 2026 | $34,306 | $27,796 | 2018-12 |
| Morgan County Moose Lodge 1857 Loyal Order of Moose | Brush | 501(c)(8) | 2022 | $33,289 | $361,662 | 2026-04 |
| Pikes Peak Region Lodge No 473 Ibpoew | Colorado SPGS | 501(c)(8) | 2020 | $32,118 | $703,070 | 2025-12 |
| Southern Colorado Order Sons of Italy Lodge 2738 Inc | Pueblo | 501(c)(10) | 2014 | $19,595 | $52,123 | 2025-09 |
| Century Masonic Hall Association | Greeley | 501(c)(2) | 2021 | $10,352 | $239,682 | 2025-12 |
| Colorado State Grange Patrons of Husbandry | Salida | 501(c)(5) | 1946 | $8,400 | $414,542 | 2024-12 |
| Arleigh Acres Subdivision Hoa | Berthoud | 501(c)(4) | 2026 | $6,232 | $24,792 | 2025-12 |
| Lakewood Acres Irrigation Co | Lakewood | 501(c)(12) | 2016 | $5,430 | $9,791 | 2025-12 |
| Coulson Drive Pipeline Inc | Grand JCT | 501(c)(12) | 2009 | $5,043 | $13,039 | 2025-12 |
| 10TH Mountain Roller Dolls | Edwards | 501(c)(4) | 2015 | $0 | $0 | 2025-12 |
| Adaman Club | Manitou SPGS | 501(c)(7) | 2014 | $0 | $0 | 2026-03 |
| Advancing Modern Professionals for Tomorrow Inc | Sterling | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Alabama Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| American Federation of Government Employees | Lakewood | 501(c)(5) | 1940 | $0 | $0 | 2025-12 |
| American Legion | Brighton | 501(c)(19) | 1946 | $0 | $0 | 2025-12 |
| American Legion | Pagosa SPGS | 501(c)(19) | 1946 | $0 | $0 | 2025-12 |
| American Legion Auxiliary | Arvada | 501(c)(19) | 2014 | $0 | $0 | 2025-06 |
| Ancient Free and Accepted Masons of Colorado | Steamboat Springs | 501(c)(10) | 2025 | $0 | $0 | 2025-12 |
| Arizona and New Mexico Medical Group Management Association | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2026-06 |
| Association of Retired Fire Fighters | Colorado SPGS | 501(c)(5) | 1999 | $0 | $0 | 2025-12 |
| Baca Irrigating Ditch Company | Trinidad | 501(c)(12) | 2016 | $0 | $0 | 2025-12 |
| Baker Ott Lateral Co | Fort Morgan | 501(c)(12) | 2011 | $0 | $0 | 2025-12 |
| Basin Ditch Company | Carbondale | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| Bear Canon Cemetery Association | Louviers | 501(c)(13) | 2014 | $0 | $0 | 2025-12 |
| Bear Creek Cemetery Association | Evergreen | 501(c)(13) | 2015 | $0 | $0 | 2025-12 |
| Benevolent & Protective Order of the Elks of the USA 1907 Rangely | Rangely | 501(c)(5) | 2024 | $0 | $0 | 2026-03 |
| Benevolent Brotherhood Foundation | Loveland | 501(c)(3) | 1973 | $0 | $0 | 2026-05 |
| Big Cut Lateral & Reservoir Co | Windsor | 501(c)(12) | 2017 | $0 | $0 | 2025-12 |
| Bijou Lateral No 5 Ditch Co | Fort Morgan | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| Bijou No 2 Lateral Co | Fort Morgan | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| Bishop Evans Council 10122 Ladiesauxiliary | Aurora | 501(c)(10) | 2012 | $0 | $0 | 2026-06 |
| Black Dike Pipeline Company | Cortez | 501(c)(12) | 2007 | $0 | $0 | 2025-12 |
| Blue Knights International Law Enforcement Motorcycle Club Inc | Colorado SPGS | 501(c)(10) | 2024 | $0 | $0 | 2025-12 |
| Boulder Fop Lodge 65 | Boulder | 501(c)(8) | 2025 | $0 | $0 | 2025-06 |
| Boulder Group One Foundation Inc | Lafayette | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Brennan Box Lateral Company | Lafayette | 501(c)(12) | 2022 | $0 | $0 | 2023-12 |
| Bridgepath Global Initiative | Colorado SPGS | 501(c)(3) | 2026 | |||
| Brighton Fire Fighters Retiree Health Fund Trustees | Brighton | 501(c)(9) | 2019 | $0 | $0 | 2024-12 |
| Buckhorn Highline Ditch Company | Loveland | 501(c)(5) | 2011 | $0 | $0 | 2025-12 |
| Butte Irrigating and Milling Company | Longmont | 501(c)(12) | 2014 | $0 | $0 | 2025-12 |
| Cbsa-Rmoc LLC | Monument | 501(c)(7) | 2024 | $0 | $0 | 2025-12 |
| Cedar Mesa Ditch Co - Cedar Mesa Ditch Res Co | Cedaredge | 501(c)(12) | 2015 | $0 | $0 | 2025-12 |
| Central Rocky Mountain Chapter of the Health Physics Society | Ft Collins | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Clark Lateral Ditch Co | Pueblo | 501(c)(12) | 2019 | $0 | $0 | 2025-12 |
| Coaldale Community Cemetery Association | Coaldale | 501(c)(13) | 2005 | $0 | $0 | 2025-12 |
| Colorado Alliance for Continuing Medical Education | Denver | 501(c)(6) | 2025 | $0 | $0 | 2025-12 |
| Colorado Boards of Education Self-Funded Trust Inc | Greenwood VLG | 501(c)(9) | 2006 | $0 | $278,810 | 2025-06 |
| Colorado Overseas Chinese Federatio N | Denver | 501(c)(3) | 2026 | |||
| Colorado Springs Lodge No 76 Af and Am | Colorado SPGS | 501(c)(8) | 2024 | $0 | $0 | 2025-11 |
| Columbian Assoc of Durando Inc | Durango | 501(c)(10) | 2007 | $0 | $0 | 2025-12 |
| Cortez Council No 4209 Knights of Columbus | Cortez | 501(c)(8) | 2025 | $0 | $0 | 2025-12 |
| Crawford Clipper Ditch Co | Crawford | 501(c)(12) | 1944 | $0 | $67,986 | 2025-12 |
| Crestone End-Of-Life Project | Crestone | 501(c)(13) | 2009 | $0 | $0 | 2025-12 |
| Cusack Family Cemetery Company | Golden | 501(c)(13) | 2023 | $0 | $0 | 2025-12 |
| Dailey Lateral Company | Fort Morgan | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| Danish Sisterhood of America | Littleton | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Daughters of Crete | Lakewood | 501(c)(8) | 1946 | $0 | $0 | 2024-12 |
| Diece | Broomfield | 501(c)(3) | 2021 | $0 | $0 | 2025-06 |
| Directors of Volunteers in Agencies | Denver | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Dry Creek Lateral Ditch Company | Berthoud | 501(c)(12) | 2026 | |||
| Durango Masonic Temple Association Inc | Durango | 501(c)(2) | 2026 | |||
| Eaklor Ditch Co | Creede | 501(c)(12) | 2022 | $0 | $8,923 | 2025-12 |
| El Paso Lodge 13 Af Am | Colorado SPGS | 501(c)(10) | 2025 | $0 | $0 | 2025-11 |
| Fairmount Firefighters Foundation | Golden | 501(c)(4) | 2016 | $0 | $0 | 2024-12 |
| Father Tom Scheets Assembly No 2525 | La Junta | 501(c)(8) | 2015 | $0 | $0 | 2024-12 |
| Federal Heights Fop Lodge 77 | Westminster | 501(c)(8) | 2026 | |||
| Florida Medical Group Management Association | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Folsom Family Cemetery Association LLC | Durango | 501(c)(13) | 2014 | $0 | $0 | 2025-12 |
| Fort Carson Sergeants Major Association | Colorado SPGS | 501(c)(19) | 2014 | $0 | $0 | 2023-12 |
| Fraternal Order of Police | Golden | 501(c)(8) | 2026 | |||
| Front Range Coin Club | Longmont | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Front Range Fire Local 5400 | Johnstown | 501(c)(5) | 2025 | $0 | $0 | 2025-12 |
| German Creek West Water Co | Paonia | 501(c)(12) | 2022 | $0 | $0 | 2025-12 |
| Glade Park Pipeline Water Users Association | Glade Park | 501(c)(12) | 2025 | $0 | $0 | 2026-04 |
| Granby Community Cemetery Inc | Granby | 501(c)(13) | 2023 | $0 | $0 | 2025-12 |
| Grand Mesa Council 02731 Koc | Delta | 501(c)(8) | 2014 | $0 | $0 | 2025-06 |
| Grand Valley Gives Collaboration | Grand JCT | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Green Valley Estates Irrigation Company | Loveland | 501(c)(12) | 2013 | $0 | $0 | 2025-12 |
| Gunnison Council No2185 Knights of Columbus | Gunnison | 501(c)(8) | 2011 | $0 | $0 | 2025-12 |
| Hawkeye Lateral Ditch Company | Fruita | 501(c)(12) | 2015 | $0 | $0 | 2025-12 |
| Heart of Rosena | Colorado SPGS | 501(c)(3) | 2024 | |||
| Henry Bolen Ditch Company | Mancos | 501(c)(12) | 2005 | $0 | $0 | 2025-12 |
| Herizon Entrepreneurs | Colorado Springs | 501(c)(3) | 2026 | $0 | $0 | 2026-06 |
| Hillcrest Ditch Company | Grand JCT | 501(c)(12) | 2013 | $0 | $0 | 2025-12 |
| Historical Cemetery No 18 Perpetual Care Fund | Boulder | 501(c)(13) | 2001 | $0 | $0 | 2025-12 |
| Hurick Lateral | Eaton | 501(c)(12) | 2023 | $0 | $0 | 2025-12 |
| Hygiene Cemetery Association | Hygiene | 501(c)(13) | 2020 | $0 | $0 | 2025-12 |
| Ici Properties Inc | Colorado SPGS | 501(c)(2) | 2025 | |||
| Idlewild Ditch Company | Ridgway | 501(c)(12) | 2020 | $0 | $0 | 2025-12 |
| International Association of Fire Fighters | Arvada | 501(c)(5) | 1959 | $0 | $0 | 2025-09 |
| International Society for Organization Development | Colorado SPGS | 501(c)(6) | 2014 | $0 | $0 | 2025-12 |
| Iowa Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Jesse Ditch Co | Hotchkiss | 501(c)(13) | 2002 | $0 | $0 | 2025-12 |
| Jesus the Light of the World Assembly 3300 | Littleton | 501(c)(8) | 2016 | $0 | $0 | 2026-06 |
| Kendall Reservoir Company | Collbran | 501(c)(12) | 2020 | $0 | $0 | 2024-12 |
| Knights Templar of the United States of America | Trinidad | 501(c)(10) | 1964 | $0 | $0 | 2026-06 |
| Knights of Columbus | Aurora | 501(c)(8) | 2014 | $0 | $0 | 2024-12 |
| Knights of Columbus | Littleton | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Knights of Columbus | Brighton | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Knights of Columbus | Louisville | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Knights of Columbus | Buena Vista | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Knights of Columbus | Divide | 501(c)(8) | 1940 | $0 | $0 | 2024-12 |
| Knights of Columbus | Fruita | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Knights of Columbus | Colorado SPRNGS | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Knights of Columbus | Mead | 501(c)(8) | 1940 | $0 | $0 | 2025-12 |
| Knights of Columbus - Council 2308 | Glenwood SPGS | 501(c)(8) | 2014 | $0 | $0 | 2025-12 |
| Knights of Columbus Father Edward Prinster Council Number 4462 | Steamboat SPR | 501(c)(8) | 2016 | $0 | $0 | 2025-12 |
| Knights of Columbus Leadville Assembly 092 | Dillon | 501(c)(8) | 2014 | $0 | $0 | 2025-12 |
| Knights of Columbus St Marys Tri- Parish 11803 | Glenwood SPGS | 501(c)(8) | 2014 | $0 | $0 | 2025-12 |
| Layton Lateral Ditch Co | Fort Morgan | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| Leadville Council No 681 Knights of Columbus | Leadville | 501(c)(8) | 2014 | $0 | $0 | 2024-12 |
| Little Park Water Cooperative | Grand JCT | 501(c)(12) | 2017 | $0 | $0 | 2025-12 |
| Lumen Artis Benevolent Fund Association | Fort Collins | 501(c)(3) | 2022 | $3,664 | 2025-12 | |
| MSGR Thomas F Dentici Assembly 3619 | Glenwood SPGS | 501(c)(8) | 2022 | $0 | $0 | 2025-12 |
| Maryland and Delaware Medical Group Management Association | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Masonic Blue Lodge Number 173 LLC | Palisade | 501(c)(10) | 2014 | $0 | $0 | 2025-12 |
| Massachusetts and Rhode Island Medical Group Management Associati | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| McBroom Ditch Company | Englewood | 501(c)(12) | 2024 | $0 | $0 | 2025-10 |
| McCreery Lateral Company | Fort Morgan | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| McElmo Canyon Mutual Ditch and Reservoir Company | Cortez | 501(c)(12) | 2020 | $0 | $0 | 2024-12 |
| McGinn Ditch Company | Longmont | 501(c)(12) | 2025 | $0 | $0 | 2025-12 |
| Medianews Group Inc Eb Veba-Trust | Denver | 501(c)(9) | 2009 | |||
| Michigan Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Minnesota L75lateral Company | Paonia | 501(c)(12) | 2026 | |||
| Minnesota Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Monsigner Bernard J Froegel Assembly No 89 Fourth Deg Koc | Greeley | 501(c)(8) | 2012 | $0 | $0 | 2026-06 |
| Morrison Cemetery Association | Morrison | 501(c)(13) | 2012 | $0 | $0 | 2025-12 |
| Most Worshipful Prince Hall Grand Lodge F&A | Colorado SPGS | 501(c)(8) | 2021 | $0 | $0 | 2025-12 |
| Most Worshipful Prince Hall Grand Lodge of Free & Accepted Mason | Aurora | 501(c)(8) | 2002 | $0 | $0 | 2025-12 |
| Most Worshipful Prince Hall Grand Lodge of Free & Accepted Masons | Denver | 501(c)(8) | 2002 | $0 | $0 | 2025-12 |
| Most Worshipful Prince Hall Grand Lodge of Free & Accepted Masons | Denver | 501(c)(8) | 2002 | $0 | $0 | 2025-12 |
| Most Worshipful Prince Hall Grand Lodge of Free & Accepted Masons | Denver | 501(c)(8) | 2002 | $0 | $0 | 2025-06 |
| Most Worshipful Prince Hall Grand Lodge of Free & Accepted Masons | Pueblo | 501(c)(8) | 2002 | $0 | $0 | 2025-12 |
| Most Worshipul Prince Hall Grand Lodge of Free & Accepted Masons | Colorado SPGS | 501(c)(8) | 2002 | $0 | $0 | 2025-12 |
| Mount Moriah Masonic Building Association | Canon City | 501(c)(2) | 2020 | $0 | $0 | 2025-11 |
| National Association of Benefits and Insurance Professionals So Co | Colorado SPGS | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Nevada Medical Group Management Association | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| New Hampshire and Vermont Medical Group Management Association | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| New Jersey Medical Group Management Association | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| No 3 Bijou Lateral Co | Fort Morgan | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| North Rainbow Falls Water Company | Sedalia | 501(c)(12) | 2016 | $0 | $0 | 2026-04 |
| North Tollgate Ditch Company | Longmont | 501(c)(12) | 2021 | $0 | $0 | 2025-12 |
| Northern Colorado Weavers Guild Inc | Longmont | 501(c)(6) | 2014 | $0 | $0 | 2025-06 |
| Northglenn Police Officers Asso Colorado Fop Lodge 23 Inc | Northglenn | 501(c)(8) | 2020 | $0 | $0 | 2025-12 |
| Occupy the Roads | Pueblo | 501(c)(4) | 2014 | $0 | $0 | 2023-12 |
| Ohio Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Orchard Park Water Users Association | Avondale | 501(c)(12) | 1999 | $0 | $0 | 2025-12 |
| Oredigger Assets Property Management Company | Golden | 501(c)(2) | 2025 | |||
| Our Lady of the Assumption Council No 16577 Knights of Columbus | Westcliffe | 501(c)(8) | 2025 | $0 | $0 | 2025-12 |
| Our Lady of the Mountain Council No 5757 | Golden | 501(c)(8) | 2015 | $0 | $0 | 2026-06 |
| Palisade Irrigation Pipes & Laterals | Palisade | 501(c)(12) | 2013 | $0 | $0 | 2025-12 |
| Paul Revere Lodge No 130 Af & Am | Denver | 501(c)(10) | 2024 | $0 | $0 | 2025-12 |
| Peery Ditch Company | Fort Collins | 501(c)(12) | 2021 | $0 | $0 | 2025-12 |
| Phi Kappa Tau Fraternity | Fort Collins | 501(c)(7) | 1941 | $0 | $0 | 2024-06 |
| Phi Sigma Rho National Housing Corporation | Denver | 501(c)(7) | 2025 | $0 | $0 | 2024-12 |
| Pikes Peak Owh | Colorado Springs | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Pilot Rock Ditch Company | Crawford | 501(c)(12) | 2019 | $0 | $0 | 2025-12 |
| Pinnacol Assurance | Denver | 501(c)(27) | 1999 | 2024-12 | ||
| Plumb Irrigation Company | Greeley | 501(c)(12) | 2004 | $0 | $0 | 2025-12 |
| Plumb and Dailey Ditch Company | Longmont | 501(c)(12) | 2025 | $0 | $0 | 2025-12 |
| Poudre Association of School Executives | Fort Collins | 501(c)(4) | 2016 | $0 | $0 | 2026-06 |
| Prairie Church Cemetery | Longmont | 501(c)(13) | 2017 | $0 | $0 | 2025-12 |
| Prairie Wilderness Cemeteries | Platteville | 501(c)(13) | 2008 | $0 | $0 | 2025-12 |
| Psychedelic Standards Organization | Castle Rock | 501(c)(3) | 2022 | $572 | 2023-12 | |
| Pueblo Masonic Temple Association | Pueblo | 501(c)(2) | 2025 | $0 | $0 | 2025-12 |
| Pueblo Pioneer Cemetary Association | Pueblo | 501(c)(3) | 2003 | $0 | $0 | 2025-09 |
| R4R Foundation | Fort Lupton | 501(c)(3) | 2025 | |||
| Ragged Mountain Water Users Association | Somerset | 501(c)(12) | 2014 | $0 | $0 | 2025-12 |
| Rimmels Ranch for Those Who Serve | Castle Rock | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Rio Blanco Masonic Temple Association | Meeker | 501(c)(2) | 2025 | $0 | $0 | 2025-12 |
| Rio Vista Water Corporation | Grand JCT | 501(c)(12) | 2025 | $0 | $0 | 2026-03 |
| Rocky Mountain Chapter American Association of Healthcare | Greeley | 501(c)(6) | 2014 | $0 | $0 | 2025-12 |
| Rocky Mountain Council No 2 Royal and Select Masters | Trinidad | 501(c)(10) | 2019 | $0 | $0 | 2026-06 |
| Rocky Mountain Netsuite User Group | Lone Tree | 501(c)(3) | 2016 | $35,940 | 2025-12 | |
| Rocky Mountain Smoke Free Alliance | Denver | 501(c)(6) | 2024 | |||
| Rotary International | Edwards | 501(c)(4) | 2014 | $0 | $0 | 2026-06 |
| Ryssby Cemetery Trust | Longmont | 501(c)(13) | 2014 | $0 | $0 | 2025-12 |
| San Isabel View Cemetery Company | Westcliffe | 501(c)(13) | 2019 | $0 | $0 | 2025-12 |
| San Luis Valley Irrigation Well Owners Inc | Monte Vista | 501(c)(12) | 2007 | |||
| Saudi Water Users | Monte Vista | 501(c)(12) | 2001 | $0 | $0 | 2025-12 |
| Scenic Knolls Water Association | Fort Collins | 501(c)(12) | 2010 | $0 | $0 | 2025-12 |
| Shawnee Water Consumers Association Inc | Shawnee | 501(c)(12) | 2018 | $0 | $0 | 2024-12 |
| Short Ditch Company | Paonia | 501(c)(12) | 2016 | $0 | $0 | 2026-02 |
| Sierra Verde Water Inc | Durango | 501(c)(12) | 2013 | $0 | $0 | 2024-12 |
| Skyline Ditch Company | Greeley | 501(c)(12) | 2019 | $0 | $0 | 2025-12 |
| Snyder Lateral Company | Fort Morgan | 501(c)(12) | 2025 | $0 | $0 | 2025-12 |
| Societas Rosicruciana in Civitatibus Foederatis Colorado Co | Littleton | 501(c)(10) | 2021 | $0 | $0 | 2025-05 |
| Society of Fire Protection Engineers | Littleton | 501(c)(6) | 1966 | $0 | $0 | 2025-12 |
| South Branch Company | Longmont | 501(c)(12) | 2014 | $0 | $0 | 2025-12 |
| South Main Pipeline Association | Mancos | 501(c)(12) | 2017 | $0 | $0 | 2024-12 |
| South Meadows Cemetery Association Inc | Denver | 501(c)(13) | 2022 | $0 | $0 | 2025-12 |
| Southwest Regional Delegates Meeting Inc | Westminster | 501(c)(3) | 2024 | $0 | $0 | 2025-06 |
| Spring Canon Waste Way Ditch Company | Fort Collins | 501(c)(12) | 2025 | $0 | $0 | 2026-05 |
| Spring Valley Cemetery Association Inc | Colorado SPGS | 501(c)(13) | 2024 | $0 | $0 | 2025-12 |
| St Andrew United Methodist Columbarium Corporation | HGHLNDS Ranch | 501(c)(13) | 2016 | $0 | $0 | 2026-06 |
| Stucker Mesa Domestic Water Co | Paonia | 501(c)(12) | 2013 | $0 | $0 | 2025-12 |
| Sylvan Dale Legacy | Loveland | 501(c)(3) | 2021 | $0 | $1.9 million | 2024-12 |
| Syrian Temple 49 | Denver | 501(c)(10) | 2007 | $0 | $0 | 2025-12 |
| Tau Kappa Epsilon Fraternity Inc | Boulder | 501(c)(7) | 2004 | $0 | $0 | 2025-06 |
| Texas Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| The Disciples Miracle Ministries | Aurora | 501(c)(3) | 2019 | |||
| The Ginters Grove Domestic Water Corporation | Cedaredge | 501(c)(12) | 2007 | $0 | $0 | 2026-04 |
| The Lakeside Lateral Ditch Company | Eaton | 501(c)(12) | 2015 | $0 | $0 | 2025-12 |
| The Paonia Ditch Company | Paonia | 501(c)(12) | 2022 | $0 | $0 | 2024-12 |
| The Wood Perry Ditch Company A Colorado Non Profit Company | Ridgway | 501(c)(12) | 2014 | $0 | $0 | 2025-12 |
| Triad Chapter 42 Royal Arch Masons | Denver | 501(c)(8) | 2014 | $0 | $0 | 2025-06 |
| Trujillo Creek Community Cemetary Inc | Aguilar | 501(c)(13) | 2010 | $0 | $0 | 2025-12 |
| Turner Ditch Co | Paonia | 501(c)(12) | 2021 | $0 | $0 | 2025-12 |
| Union Lateral Irrigating Company | Lucerne | 501(c)(12) | 2014 | $0 | $0 | 2023-12 |
| Union Mutual Ditch Company | Denver | 501(c)(12) | 2015 | $0 | $0 | 2025-12 |
| Vajra Regent Osel Tendzin Library and Archives | Boulder | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Virginia Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| WR Blower Ditch Company Inc | Hygiene | 501(c)(12) | 2015 | $0 | $0 | 2025-12 |
| Walden Reservoir Company Inc | Cowdrey | 501(c)(12) | 2013 | $0 | $0 | 2025-12 |
| Washington Medical Group Management Association | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Water Users of Lateral Ditch 110 Inc | Grand JCT | 501(c)(12) | 2017 | $0 | $0 | 2025-12 |
| West Rhone Lateral Ditch Company | Fruita | 501(c)(12) | 2001 | $0 | $0 | 2025-12 |
| White Ditch No 2 Incorporated | Salida | 501(c)(12) | 2026 | |||
| Wild Sage Natural Burials | Paonia | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Williamson Ditch Company | Longmont | 501(c)(12) | 2025 | $0 | $0 | 2025-12 |
| Williamson Lateral Ditch Company | Fort Collins | 501(c)(12) | 2022 | $0 | $0 | 2025-12 |
| Wisconsin Mgma | Englewood | 501(c)(6) | 2025 | $0 | $0 | 2025-06 |
| Wolff Ditch Company | Arvada | 501(c)(12) | 2023 | $0 | $0 | 2025-09 |
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.