Nonprofits in Illinois

Nonprofits in Illinois. Browse 87,324 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. Illinois Society of Microbiology

    EIN 366111530 · Headquarters: TINLEY PARK, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Illinois Society of Oral and Maxillofacial Surgeons

    EIN 362916474 · Headquarters: GENEVA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. Illinois Society of Orthodontists

    EIN 362580040 · Headquarters: NAPERVILLE, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  4. Illinois Society of Pathologists

    EIN 363450851 · Headquarters: LAKE BLUFF, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Illinois Society of Pediatric Dentists

    EIN 363370254 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Illinois Society of Periodontists

    EIN 362205097 · Headquarters: FORSYTH, IL, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  7. Illinois Society of Plastic Surgeons

    EIN 272683442 · Headquarters: Chicago, IL, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Illinois Society of Professional Engineers

    EIN 237064420 · Headquarters: QUINCY, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Illinois Society of Professional Engineers

    EIN 237155487 · Headquarters: Bartlett, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  10. Illinois Society of Professional Engineers

    EIN 363533063 · Headquarters: Rock Island, IL, US · Science & Technology · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  11. Illinois Society of Professional Engineers

    EIN 366205544 · Headquarters: Deerfield, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  12. Illinois Society of Professional Engineers

    EIN 366205545 · Headquarters: Rockford, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Illinois Society of Professional Engineers

    EIN 366205546 · Headquarters: Dixon, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Illinois Society of Professional Engineers

    EIN 366205625 · Headquarters: Bradley, IL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  15. Illinois Society of Professional Engineers

    EIN 366205824 · Headquarters: Decatur, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  16. Illinois Society of Professional Engineers

    EIN 366205835 · Headquarters: ST Charles, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  17. Illinois Society of Professional Engineers

    EIN 366205845 · Headquarters: Lake Forest, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Illinois Society of Professional Engineers

    EIN 366205846 · Headquarters: Peru, IL, US · Science & Technology · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  19. Illinois Society of Professional Engineers

    EIN 366205847 · Headquarters: Yorkville, IL, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  20. Illinois Society of Professional Engineers

    EIN 371124750 · Headquarters: Peoria, IL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  21. Illinois Society of Professional Engineers

    EIN 371220301 · Headquarters: Urbana, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Illinois Society of Professional Engineers

    EIN 371224506 · Headquarters: Olney, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  23. Illinois Society of Professional Engineers

    EIN 371224520 · Headquarters: Marion, IL, US · Science & Technology · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  24. Illinois Society of Professional Engineers

    EIN 376082247 · Headquarters: Normal, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Illinois Society of Professional Engineers

    EIN 436098685 · Headquarters: Collinsville, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Illinois Society of Professional Farm Managers & Rural Appraisers

    EIN 237089333 · Headquarters: Urbana, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. Illinois Society of Proffesional Engineers

    EIN 371224517 · Headquarters: Springfield, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Illinois Society of the American Colonists

    EIN 202009611 · Headquarters: Downers Grove, IL, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  29. 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

  30. Illinois Soil Classifiers Association

    EIN 510204016 · Headquarters: Divernon, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Illinois Solar Education Association Inc

    EIN 363027007 · Headquarters: PALATINE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. Illinois Solar Energy Association

    EIN 371932262 · Headquarters: PALATINE, IL, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990

  33. Illinois Solar Industry Association

    EIN 473379320 · Headquarters: Elk Grove Village, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Illinois Sons of Italy Foundation

    EIN 364221047 · Headquarters: Oak Forest, IL, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. Illinois Southdown Breeders Association

    EIN 820560444 · Headquarters: Jacksonville, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Illinois Soybean Board

    EIN 376152654 · Headquarters: BLOOMINGTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Illinois Soybean Foundation

    EIN 853318788 · Headquarters: BLOOMINGTON, IL, USA · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  38. Illinois Soybean Growers

    EIN 237024061 · Headquarters: BLOOMINGTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Illinois Space Society

    EIN 201511141 · Headquarters: Urbana, IL, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Illinois Special Education Charter Cooperative

    EIN 871746139 · Headquarters: CHICAGO, IL, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Illinois Specialty Growers Association

    EIN 371142742 · Headquarters: BLOOMINGTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Illinois Speech-language-hearing Assoc

    EIN 370954618 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Illinois Spina Bifida Association

    EIN 237062317 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Illinois Staff Physician Recruiters

    EIN 200070366 · Headquarters: PEORIA, IL, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  45. Illinois Stalking Advocacy Center

    EIN 831045754 · Headquarters: Paw Paw, IL, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  46. Illinois Stampede

    EIN 463399100 · Headquarters: BOLINGBROOK, IL, US · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  47. Illinois Standardbred Association

    EIN 332574578 · Headquarters: CANTRALL, IL, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  48. Illinois State Academy of Science

    EIN 376043007 · Headquarters: Springfield, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Illinois State Administrators in Hematology Oncology

    EIN 364464262 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  50. Illinois State Alliance of Ymcas

    EIN 471468519 · Headquarters: SILVIS, IL, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  51. Illinois State Alpha Tau Omega House Corporation

    EIN 371083248 · Headquarters: BLOOMINGTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  52. Illinois State Ambulance Association

    EIN 363554966 · Headquarters: CANTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  53. Illinois State Apprenticeship Committee and Conference

    EIN 208320049 · Headquarters: Burr Ridge, IL, US · Employment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  54. Illinois State Assembly of Ast

    EIN 364439578 · Headquarters: PEORIA, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Illinois State Assn Scholarship Program

    EIN 800666012 · Headquarters: Addison, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Illinois State Association of Counties

    EIN 830907659 · Headquarters: SPRINGFIELD, IL, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Illinois State Association of Health Underwriters

    EIN 364007993 · Headquarters: Schaumburg, IL, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Illinois State Association of Life Underwriters

    EIN 376044713 · Headquarters: Mattoon, IL, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  59. Illinois State Association of National Campers and Hikers Associ

    EIN 363235260 · Headquarters: Addison, IL, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Illinois State Association of Parliamentarians

    EIN 237055179 · Headquarters: CHICAGO, IL, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Illinois State Auctioneers Association

    EIN 237292390 · Headquarters: SPRINGFIELD, IL, USA · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  62. Illinois State Auxiliary of the Fraternal Order of Police

    EIN 863571389 · Headquarters: SPRINGFIELD, IL, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Illinois State Bar Association

    EIN 370345303 · Headquarters: Springfield, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Illinois State Beekeepers Association

    EIN 383926544 · Headquarters: Springfield, IL, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Illinois State Black Chamber of Commerce Inc

    EIN 364478202 · Headquarters: Peoria, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Illinois State Bowling Proprietors

    EIN 366108960 · Headquarters: Melrose Park, IL, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Illinois State Chapter of the Acacia Fraternity

    EIN 461237704 · Headquarters: Normal, IL, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  68. Illinois State Chapter of Womens Council of Realtors

    EIN 830412639 · Headquarters: Downers Grove, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Illinois State Conference of Ibew

    EIN 371362153 · Headquarters: ROCKFORD, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  70. Illinois State Conference of OP & CM

    EIN 376038744 · Headquarters: TROY, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  71. Illinois State Conference of Young Iscypaa

    EIN 815239074 · Headquarters: ST CHARLES, IL, USA · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  72. Illinois State Council Knights of Columbus

    EIN 361268095 · Headquarters: Kankakee, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Illinois State Council Knights of Columbus Charities Inc

    EIN 510194196 · Headquarters: Kankakee, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Illinois State Council of the Intrntl Union Operating Engineers

    EIN 371240764 · Headquarters: Marion, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Illinois State Credit Union

    EIN 370805312 · Headquarters: NORMAL, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Illinois State Crime Commission Police Athletic League of Illinois

    EIN 363965790 · Headquarters: WOODRIDGE, IL, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Illinois State Crimestoppers Association

    EIN 363611689 · Headquarters: Peoria, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Illinois State Curling Foundation

    EIN 363479326 · Headquarters: GLENVIEW, IL, USA · Recreation & Sports · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  79. Illinois State Delta Chi Housing Co

    EIN 205075197 · Headquarters: DECATUR, IL, USA · Housing & Shelter · Latest available filing year: 2016 · Primary form: IRS Form 990

  80. Illinois State Dental Society

    EIN 370682986 · Headquarters: Springfield, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Illinois State Dental Society Foundation

    EIN 237244932 · Headquarters: Springfield, IL, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Illinois State Department of Insurance Employees Club Inc

    EIN 371023634 · Headquarters: SPRINGFIELD, IL, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  83. Illinois State Employees Association Professionals Local 2002

    EIN 371257846 · Headquarters: SPRINGFIELD, IL, USA · Employment · Latest available filing year: 2020 · Primary form: IRS Form 990

  84. Illinois State Employees Association/retirees

    EIN 371202338 · Headquarters: SPRINGFIELD, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Illinois State Fair Museum Foundation

    EIN 205758851 · Headquarters: Springfield, IL, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Illinois State Florists Association

    EIN 376040433 · Headquarters: Edwardsville, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Illinois State Fop Auxiliary

    EIN 471771615 · Headquarters: SPRINGFIELD, IL, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  88. Illinois State Fraternal Congress

    EIN 263791908 · Headquarters: Belleville, IL, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  89. Illinois State Genealogical Society

    EIN 370911225 · Headquarters: Springfield, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  90. Illinois State Grand Assembly Order of the Golden Circle

    EIN 844518046 · Headquarters: Matteson, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  91. Illinois State Grange

    EIN 237590583 · Headquarters: Roscoe, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Illinois State Grange

    EIN 237590585 · Headquarters: Capron, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Illinois State Grange

    EIN 237590586 · Headquarters: Rockton, IL, US · Food, Agriculture & Nutrition · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  94. Illinois State Grange

    EIN 237590587 · Headquarters: Belvidere, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Illinois State Grange

    EIN 237590591 · Headquarters: Belvidere, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  96. Illinois State Grange

    EIN 237590615 · Headquarters: Troy Grove, IL, US · Food, Agriculture & Nutrition · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  97. Illinois State Grange

    EIN 237590628 · Headquarters: Polo, IL, US · Food, Agriculture & Nutrition · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  98. Illinois State Grange

    EIN 237590630 · Headquarters: Leaf River, IL, US · Food, Agriculture & Nutrition · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  99. Illinois State Grange

    EIN 237590642 · Headquarters: New Athens, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Illinois State Grange

    EIN 237590644 · Headquarters: O Fallon, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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