Environment nonprofits in Illinois

Environment nonprofits in Illinois. Browse 919 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. Green Roselle

    EIN 922464310 · Headquarters: Roselle, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Greener Grove Inc

    EIN 991412353 · Headquarters: Downers Grove, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Greening Tomorrow A Not For Profit Corporation

    EIN 264780116 · Headquarters: Chicago Heights, IL, USA · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-PF

  4. Guardians of the Prairie and Forest

    EIN 813538052 · Headquarters: Rock Island, IL, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  5. Hamilton Community Developement Coalition N Fp

    EIN 371433149 · Headquarters: Hamilton, IL, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  6. Hank Gianvecchio Natural Habitat Area Foundation

    EIN 460934601 · Headquarters: Bloomingdle, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Hanover Park Park Foundation

    EIN 363993084 · Headquarters: HANOVER PARK, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Healthy Lands Healthy People

    EIN 454172811 · Headquarters: Godfrey, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Healthy Schools Campaign

    EIN 364308068 · Headquarters: Chicago, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Heartland Water Resources Council

    EIN 371250601 · Headquarters: Peoria, IL, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  11. Heartlands Conservancy

    EIN 371273869 · Headquarters: BELLEVILLE, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  12. Help End Landfill Pollution

    EIN 371272561 · Headquarters: Homer, IL, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  13. Helping Others Maintain Environmental Standards

    EIN 261721443 · Headquarters: Warren, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Hickory Creek Watershed Planning Group

    EIN 460875737 · Headquarters: New Lenox, IL, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  15. Holistic Homewood

    EIN 815470042 · Headquarters: Homewood, IL, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  16. Homer Glen Foundation

    EIN 201095695 · Headquarters: Homer Glen, IL, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  17. Homewood Izaak Walton Preserve Inc

    EIN 366097965 · Headquarters: Homewood, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Hsmai Chicago

    EIN 333411235 · Headquarters: evanston, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Huisingh Family Foundation

    EIN 934459811 · Headquarters: FULTON, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. Ikebana International Chicago Chapter

    EIN 363182239 · Headquarters: Winnetka, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Il Association of Resource Conservation & Development Areas

    EIN 371280751 · Headquarters: Macomb, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Il Quga A10

    EIN 471491459 · Headquarters: MIDDLETOWN, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Illini Solar Car

    EIN 843504666 · Headquarters: Urbana, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Illinois African Violet Society Inc

    EIN 363309401 · Headquarters: Hanover Park, IL, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  25. Illinois Association of Conservation Districts

    EIN 882516600 · Headquarters: Belvidere, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Illinois Association of Environmental Professionals

    EIN 363876637 · Headquarters: Rosemont, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Illinois Audubon Society

    EIN 366065870 · Headquarters: SPRINGFIELD, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Illinois Chapter American Society of Landscape Architects

    EIN 363662663 · Headquarters: OAK BROOK, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  29. Illinois Clean Energy Community Foundation

    EIN 364334358 · Headquarters: Chicago, IL, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  30. Illinois Climbers Association

    EIN 050531071 · Headquarters: Carbondale, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Illinois Conservation Foundation

    EIN 371340071 · Headquarters: Springfield, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Illinois Dunesland Garden Club

    EIN 612125468 · Headquarters: Zion, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Illinois Environmental Council Education

    EIN 510211835 · Headquarters: SPRINGFIELD, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Illinois Forestry Association

    EIN 270134781 · Headquarters: Chatham, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  35. Illinois Grazing Lands Coalition

    EIN 371415606 · Headquarters: BREESE, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. Illinois Headwaters Resource Conservation & Development Council

    EIN 208006078 · Headquarters: Morris, IL, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  37. Illinois Mercury Speed Nfp

    EIN 320240121 · Headquarters: NORTHLAKE, IL, USA · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  38. Illinois Mosquito and Vector Control Association

    EIN 363214243 · Headquarters: Northfield, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Illinois Orchid Society Inc

    EIN 366109263 · Headquarters: Deerfield, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Illinois Park and Recreation Association

    EIN 300098388 · Headquarters: LAGRANGE, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Illinois Prairie Hosta Society

    EIN 550877514 · Headquarters: Savoy, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Illinois Recycling Foundation

    EIN 843846343 · Headquarters: Geneva, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  43. Illinois Renewable Energy Association Inc

    EIN 043634258 · Headquarters: OREGON, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  44. Illinois River Valley Conservation Group

    EIN 901027276 · Headquarters: Varna, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Illinois Science and Energy Innovation Fund

    EIN 455087913 · Headquarters: GILBERTS, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Illinois Society of Fire Service Instructors

    EIN 363268427 · Headquarters: Plato Center, IL, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  47. Illinois Soil And Water Conservation DISTRICTS FOUNDATION

    EIN 371106381 · Headquarters: SPRINGFIELD, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Illinois Traction System Trail Comm

    EIN 300369008 · Headquarters: STAUNTON, IL, USA · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  49. Illinois Water Environment Assoc

    EIN 363364115 · Headquarters: CHICAGO, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Imagine Haitian Inc Nfp

    EIN 332084813 · Headquarters: CHICAGO, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Improve Our Communities

    EIN 923626096 · Headquarters: Wadsworth, IL, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  52. In the Gardens

    EIN 811031385 · Headquarters: Elmhurst, IL, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  53. Indian Creek Watershed Project Ltd Co Tori Trauscht

    EIN 364384819 · Headquarters: MUNDELEIN, IL, USA · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  54. Inner City Outdoors Inc

    EIN 862627763 · Headquarters: Cahokia Heights, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Institute for Neotropical Conservation

    EIN 203252748 · Headquarters: carbondale, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Institute of Global Energy Education Inc

    EIN 842595369 · Headquarters: Naperville, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Institute of Healthcare Connections

    EIN 884174443 · Headquarters: Chicago, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Institute of Tribology and Coatings

    EIN 810648827 · Headquarters: Sugar Grove, IL, USA · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990

  59. International Cesarean Awareness Network

    EIN 272127363 · Headquarters: Poplar Grove, IL, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  60. International Erosion Control Association

    EIN 364572121 · Headquarters: DeKalb, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Izaak Walton League

    EIN 366110182 · Headquarters: Des Plaines, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. Izaak Walton League of America - Calumet Regi

    EIN 366472683 · Headquarters: DOLTON, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Izaak Walton League of America Inc

    EIN 310920281 · Headquarters: Crete, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Izaak Walton League of America Inc

    EIN 362773524 · Headquarters: Northbrook, IL, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  65. Izaak Walton League of America Inc

    EIN 521382376 · Headquarters: Mahomet, IL, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  66. Jackson Park Conservancy

    EIN 932376022 · Headquarters: Chicago, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Jade Marie Beasley Speak Life Foundation Inc

    EIN 923061417 · Headquarters: Marion, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Jens Jensen Gardens in Evanston

    EIN 841805393 · Headquarters: Evanston, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Jo Daviess Conservation Foundation Inc

    EIN 363913497 · Headquarters: ELIZABETH, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. John Wesley Powell Audubon Society

    EIN 510188547 · Headquarters: Normal, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Junior Garden Club of Lake Forest

    EIN 454594026 · Headquarters: Lake Forest, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Kane Forest Preserve Foundation

    EIN 813243245 · Headquarters: Geneva, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. Kankakee Kultivators Inc

    EIN 822354284 · Headquarters: Bourbonnais, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Kankakee River Basin Commission

    EIN 364548394 · Headquarters: Kankakee, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Karst Conservancy of Illinois Inc

    EIN 311693486 · Headquarters: Metamora, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Keeler Gardens Nfp

    EIN 813168766 · Headquarters: Chicago, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Keep Carbondale Beautiful Inc

    EIN 371220118 · Headquarters: Carbondale, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Keep Chicago Beautiful

    EIN 363529780 · Headquarters: Des Plaines, IL, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  79. Keep Evanston Beautiful Inc

    EIN 363471076 · Headquarters: Evanston, IL, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  80. Keep Illinois Beautiful

    EIN 364059532 · Headquarters: Forest Park, IL, USA · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  81. Keep Mt Vernon-jefferson County Beautiful Inc

    EIN 371217906 · Headquarters: Mt Vernon, IL, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  82. Keep Northern Illinois Beautiful

    EIN 363650802 · Headquarters: ROCKFORD, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Keep Peoria Beautiful Inc

    EIN 370843816 · Headquarters: PEORIA, IL, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  84. Keep Rock Island Beautiful

    EIN 363379629 · Headquarters: ROCK ISLAND, IL, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  85. Keep Vermilion County Beautiful C/o Katie Osterbur

    EIN 371425420 · Headquarters: DANVILLE, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. Keepers of Earth

    EIN 844452575 · Headquarters: Buffalo Grove, IL, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  87. Kendall County Conservation Foundation

    EIN 320008703 · Headquarters: PLANO, IL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Kenilworth Clippers

    EIN 611663750 · Headquarters: Kenilworth, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Kenilworth Council of Garden Clubs

    EIN 454565398 · Headquarters: Kenilworth, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Kenilworth Garden Club

    EIN 363078131 · Headquarters: WILMETTE, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  91. Kenwood Improvement Association

    EIN 204425414 · Headquarters: Chicago, IL, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. Kewanee Chapter Izaak Walton League of America Inc

    EIN 366116706 · Headquarters: Kewanee, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Khanya Foundation Inc Nfp

    EIN 873701495 · Headquarters: Waukegan, IL, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Kickapoomud Creek Nature Conservan

    EIN 364471558 · Headquarters: OREGON, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  95. Kincaid Area Watershed Project Inc

    EIN 371371449 · Headquarters: Murphysboro, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Klehm Arboretum and Botanic Garden Inc

    EIN 363676875 · Headquarters: ROCKFORD, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Klehm Arboretum Foundation

    EIN 205485744 · Headquarters: ROCKFORD, IL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Kristas Legacy Foundation

    EIN 873807635 · Headquarters: El Paso, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Kurtis Conservation Foundation

    EIN 364172355 · Headquarters: LIBERTYVILLE, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  100. Ladies Civic Improvement Association of Chautauqua Ill

    EIN 376048265 · Headquarters: Elsah, IL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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