Environment nonprofits

Environment nonprofits. Browse 35,718 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. International Landscape Architecture Association Inc

    EIN 473489863 · Headquarters: Schenectady, NY, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  2. International Landscape Lighting Institute Inc

    EIN 273510378 · Headquarters: SHERMAN OAKS, CA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  3. International League of Conservation Photographers

    EIN 271455999 · Headquarters: ARLINGTON, VA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. International Learning Alliance

    EIN 411710092 · Headquarters: Minneapolis, MN, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  5. International Living Future Institute

    EIN 271791162 · Headquarters: Portland, OR, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. International Marine Aid Foundation

    EIN 823295339 · Headquarters: Birmingham, AL, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  7. International Marine Association Protecting Aquatic Life

    EIN 943227856 · Headquarters: Seattle, WA, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  8. International Mountain Bicycling Association - Colorado

    EIN 270998701 · Headquarters: Oakridge, OR, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  9. International Natural Bodybldg & Fitness Federation Inc

    EIN 134087283 · Headquarters: LINDENHURST, NY, USA · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  10. International Nature Loving Association of Columbus Ohio Inc

    EIN 273888723 · Headquarters: Columbus, OH, USA · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  11. International Network for Conservat Ion Paleobiology Inc

    EIN 394004298 · Headquarters: Gainesville, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. International Nuclear Security Corporation

    EIN 851414903 · Headquarters: Mantua, OH, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  13. International Ocean Law and Science Institute

    EIN 821495302 · Headquarters: LAKE OSWEGO, OR, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  14. International Oleander Society

    EIN 760280697 · Headquarters: Galveston, TX, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. International Ozone Association

    EIN 341274149 · Headquarters: SACRAMENTO, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. International Palm Society Inc

    EIN 590829820 · Headquarters: Austin, TX, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. International Peace Gardens Norway Section

    EIN 455282793 · Headquarters: Draper, UT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. International Peace Park Expeditions Inc

    EIN 271582462 · Headquarters: Scarborough, ME, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. International Philanthropic Innovators Foundation

    EIN 871073738 · Headquarters: NEW YORK, NY, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. International Public Policy Institute Inc

    EIN 900645408 · Headquarters: Berryton, KS, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  21. International Rainforest Society

    EIN 770547714 · Headquarters: VENTURA, CA, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  22. International Rainwater Catchment System Association

    EIN 990351008 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  23. International Ranger Federation

    EIN 931900925 · Headquarters: AUBURN, CA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  24. International Rivers Network

    EIN 943158295 · Headquarters: Oakland, CA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  25. International Rocky Mountain Stage Stop Sled Dog Race

    EIN 830314194 · Headquarters: JACKSON, WY, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  26. International Sandalwood Foundation

    EIN 900645517 · Headquarters: Petaluma, CA, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  27. International Society for Reef Studies

    EIN 481109700 · Headquarters: Tavernier, FL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. International Society for the History & Bibliography of Herpetol

    EIN 161573122 · Headquarters: Saint Paul, MN, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. International Society of Automation

    EIN 363144976 · Headquarters: Omaha, NE, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. International Society of Automation Great Salt Lake Section

    EIN 271738396 · Headquarters: WEST JORDAN, UT, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  31. International Society of Environmental Enclosure Engineers

    EIN 850582917 · Headquarters: JACKSONVILLE, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. International Society of Indoor Air Quality and Climate

    EIN 300509700 · Headquarters: Atlanta, GA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  33. International Society of Limnology-sil

    EIN 986008060 · Headquarters: Grosse Pointe, MI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. International Society of Tropical Foresters

    EIN 521194548 · Headquarters: Bethesda, MD, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  35. International Society of Tropical Foresters

    EIN 660979280 · Headquarters: San Juan, PR, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. International Sonoran Desert Alliance

    EIN 860778917 · Headquarters: AJO, AZ, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. International Student Environmental Coalition

    EIN 822789272 · Headquarters: Los Angeles, CA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. International Sustainable Energy Foundation

    EIN 872509491 · Headquarters: Austin, TX, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. International Sustainable Systems Research Center

    EIN 571164239 · Headquarters: Diamond Bar, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. International Symposium on Fireworks Society Ltd

    EIN 824342644 · Headquarters: WHITEFISH BAY, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. International Thermoelectric Society

    EIN 270956157 · Headquarters: Los Angeles, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. International Union for the Study of Social Insects

    EIN 451350485 · Headquarters: COLUMBUS, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  43. International Union of Forest Research Organizations

    EIN 981112260 · Headquarters: Vienna, Vienna, AU · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. International Union of Soil Sciences Inc

    EIN 461007367 · Headquarters: Madison, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. International Water for Life Inc

    EIN 611493475 · Headquarters: Oklahoma City, OK, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  46. International Water Initiative for Sanitation and Hygiene Inc

    EIN 810960493 · Headquarters: ONTARIO, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. International Water Institute

    EIN 272253080 · Headquarters: FARGO, ND, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. International Water Resources Assoc

    EIN 237303703 · Headquarters: PARIS, FR · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. International Watershed Partners

    EIN 473938622 · Headquarters: Santa Cruz, CA, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  50. International Wild Waterfowl Association Inc

    EIN 810433487 · Headquarters: Scotland Neck, NC, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. International Wildlife Refuge Alliance

    EIN 203318708 · Headquarters: TRENTON, MI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. International Wineries for Climate Action Inc

    EIN 863959971 · Headquarters: Santa Rosa, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. International Youth Conservation Coalition

    EIN 834632602 · Headquarters: EDWARDS, CO, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  54. Interpretation Association of the West

    EIN 680472182 · Headquarters: Chico, CA, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  55. Interreligious Eco-justice Network

    EIN 043737215 · Headquarters: Preston, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Intersectional Environmentalist

    EIN 861232246 · Headquarters: LOS ANGELES, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Intersections Inc

    EIN 800675701 · Headquarters: Washington, DC, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  58. Interstate Council on Water Policy

    EIN 466182482 · Headquarters: CHEYENNE, WY, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. Interstate Land Management Corporation

    EIN 232643830 · Headquarters: PHILADELPHIA, PA, USA · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990

  60. Interstate Pest Control Compact

    EIN 376116466 · Headquarters: Baton Rouge, LA, USA · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-PF

  61. Intertribal Timber Council

    EIN 931031300 · Headquarters: PORTLAND, OR, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Intl Assn for Landscape Ecology North America

    EIN 731399224 · Headquarters: Erie, PA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  63. Intl Society for the Preservation of the Tropical Rainforest

    EIN 954028364 · Headquarters: TWENTYNINE PALMS, CA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  64. Into the Blue Foundation Inc

    EIN 831409983 · Headquarters: PALM BEACH GARDENS, FL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Into the Sea

    EIN 842687103 · Headquarters: ENGLEWOOD, CO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Into the Wild Inc

    EIN 391943842 · Headquarters: TREGO, WI, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  67. Intown Atlanta Chapter of the Georgia Native Plant Society

    EIN 871657820 · Headquarters: Atlanta, GA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Invasive Plants Association of Wisconsin Incorporated

    EIN 392020468 · Headquarters: Madison, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Invasive Species Control Coalition of Watersmeet Inc

    EIN 260468473 · Headquarters: WATERSMEET, MI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  70. Invasive Species Foundation

    EIN 872785616 · Headquarters: Davis, CA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  71. Invasive Species Management Services - Isms

    EIN 991437589 · Headquarters: San Antonio, TX, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Inventors Club of Ne Arkansas

    EIN 471673424 · Headquarters: Jonesboro, AR, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Inventure Institute Inc

    EIN 933712413 · Headquarters: MILL VALLEY, CA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  74. Inverness Garden Club

    EIN 823245702 · Headquarters: Inverness, FL, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  75. Inverness Garden Club of West Marin

    EIN 831675473 · Headquarters: Inverness, CA, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Invest Appalachia

    EIN 842748180 · Headquarters: ASHEVILLE, NC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Iole

    EIN 874120818 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Ionia Environmental Improvement Coalition

    EIN 461995968 · Headquarters: Ionia, MI, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  79. Ionia Field Trial Grounds Committee

    EIN 383001700 · Headquarters: COTTRELLVILLE, MI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. IOOS Association

    EIN 274702525 · Headquarters: Silver Spring, MD, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  81. Iowa Agricultural Mitigation Inc

    EIN 272940802 · Headquarters: Boone, IA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. Iowa Agriculture Water Alliance

    EIN 320440113 · Headquarters: ANKENY, IA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Iowa Alliance of Environmental Concerns

    EIN 421351533 · Headquarters: Council Bluffs, IA, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  84. Iowa Arboretum Inc

    EIN 426122889 · Headquarters: MADRID, IA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Iowa Arborists Association

    EIN 391871041 · Headquarters: Johnston, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Iowa Association for Energy Efficiency

    EIN 421131776 · Headquarters: PLEASANT HILL, IA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  87. Iowa Blood Trackers Association

    EIN 392556010 · Headquarters: Clear Lake, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Iowa Business for Clean Energy

    EIN 844539341 · Headquarters: WEST DES MOINES, IA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Iowa Confluence Water Trails

    EIN 871605740 · Headquarters: DES MOINES, IA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Iowa Conservation Alliance Inc

    EIN 753011112 · Headquarters: Jefferson, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Iowa Conservation Education Coalition

    EIN 260154733 · Headquarters: ACKLEY, IA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  92. Iowa Conservative Energy Forum

    EIN 841756375 · Headquarters: West Des Moines, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Iowa Division of the Izaak Walton League of America Inc

    EIN 420687714 · Headquarters: DES MOINES, IA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  94. Iowa Drainage District Association

    EIN 421421758 · Headquarters: WEST DES MOINES, IA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Iowa Energy Fund

    EIN 931397283 · Headquarters: West Des Moines, IA, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Iowa Environmental Council

    EIN 421436090 · Headquarters: DES MOINES, IA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Iowa Environmental Health Associat

    EIN 421400506 · Headquarters: Waterloo, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Iowa Great Lakes Beautification Pro

    EIN 831898171 · Headquarters: OKOBOJI, IA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Iowa Great Lakes Foundation

    EIN 472505366 · Headquarters: DES MOINES, IA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Iowa Hazardous Materials Task Force

    EIN 421463543 · Headquarters: Fort Dodge, IA, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

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