Unknown & Unclassified nonprofits in Illinois

Unknown & Unclassified nonprofits in Illinois. Browse 25,013 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. SOCIETY FOR PRESERVATION & ENCRGMNT OF BARBERSHOP QUARTET SINGING AMER Rockford Metro - 2Nd City Chorus

    EIN 900593967 · Headquarters: Rockford, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. Society for Technical Communication

    EIN 453232449 · Headquarters: Glenview, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  3. Society for the Lost Arts

    EIN 472132834 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  4. Society for the Preservation & Encouragement of Barbershop Quartet Singing

    EIN 376031430 · Headquarters: BLOOMINGTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Society for the Preservaton & Encouragment Of

    EIN 366124992 · Headquarters: Forreston, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Society for the Study of Symbolic Interaction

    EIN 391265692 · Headquarters: MACOMB, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  7. Society for Vascular Nursing

    EIN 311609723 · Headquarters: ROSEMONT, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Society for Vascular Surgery

    EIN 222990719 · Headquarters: ROSEMONT, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Society Fraternals of Miners

    EIN 370714361 · Headquarters: COELLO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Society Helpers of Holy Souls

    EIN 362174833 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  11. Society of Actuaries Research Institute

    EIN 362136422 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Society of American Foresters

    EIN 521273253 · Headquarters: Goreville, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Society of American Military Engineers

    EIN 376046844 · Headquarters: O FALLON, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Society of American Military Engineers

    EIN 510222962 · Headquarters: Champaign, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  15. Society of American Military Engineers

    EIN 521269030 · Headquarters: Glen Ellyn, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  16. Society of American Military Engineers - R I Post Attn Brad Palmer

    EIN 366164995 · Headquarters: ROCK ISLAND, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. Society of Army Physician Assistants

    EIN 741964666 · Headquarters: MONMOUTH, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  18. Society of Beta Sigma Psi Alpha Alumni Chapter

    EIN 376060576 · Headquarters: SAINT CHARLES, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. Society of Cardiovascular Anesthesiologists

    EIN 720863580 · Headquarters: EAST DUNDEE, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  20. Society of Chairs of Radiology Departments

    EIN 870321939 · Headquarters: WARRENVILLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Society of Colonial Wars in the State of Illinois

    EIN 366139321 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Society of Critical Care Medicine

    EIN 833693012 · Headquarters: Peoria, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Society of Financial Service Professionals Greater Chicago Chapter

    EIN 366116647 · Headquarters: GLEN ELLYN, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  24. Society of Genitourinary Reconstructive Surgeons

    EIN 541389700 · Headquarters: EAST DUNDEE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Society of Infectious Diseases Phar

    EIN 760338459 · Headquarters: WARRENVILLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Society of Manufacturing Engineers

    EIN 271183969 · Headquarters: Metamora, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Society of Manufacturing Engineers

    EIN 366164984 · Headquarters: Carol Stream, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Society of Manufacturing Engineers

    EIN 376033153 · Headquarters: Decatur, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Society of Mayflower Descendants In

    EIN 366051147 · Headquarters: EVANSTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Society of Midland Authors

    EIN 237177670 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Society of New York Hospital Trust Uw

    EIN 136275362 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  32. Society of Pediatric Nurses

    EIN 202923004 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  33. Society of Pediatric Nurses

    EIN 232746248 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Society of Pediatric Nurses

    EIN 260689304 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. Society of Pediatric Nurses

    EIN 330589434 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Society of Pediatric Nurses

    EIN 364602998 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Society of Pediatric Nurses

    EIN 391959203 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Society of Pediatric Nurses

    EIN 462802211 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Society of Pediatric Nurses

    EIN 464080245 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  40. Society of Pediatric Nurses

    EIN 465326198 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  41. Society of Pediatric Nurses

    EIN 561901579 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Society of Pediatric Nurses

    EIN 752559790 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Society of Pediatric Nurses

    EIN 841448415 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Society of Pediatric Nurses

    EIN 861136446 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Society of Phi Zeta

    EIN 376060780 · Headquarters: Urbana, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Society of Pi Kappa Lambda

    EIN 510192948 · Headquarters: Edwardsville, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  47. Society of Plastics Engineers

    EIN 161433294 · Headquarters: Wadsworth, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Society of Plastics Engineers

    EIN 366116665 · Headquarters: PALATINE, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Society of Plastics Engineers Thermoforming Division

    EIN 237283052 · Headquarters: LAKE FOREST, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Society of Saint Joseph Patron Saint of Casteldaccia

    EIN 821719275 · Headquarters: chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  51. Society of Skeletal Radiology Inc

    EIN 561214728 · Headquarters: EAST DUNDEE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Society of Tribologists & Lubrication Engineers

    EIN 271975545 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  53. Society of Tribologists & Lubrication Engineers

    EIN 271975615 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  54. Society of Tribologists & Lubrication Engineers

    EIN 271975676 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  55. Society of Tribologists & Lubrication Engineers

    EIN 271975804 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  56. Society of Tribologists & Lubrication Engineers

    EIN 271975984 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  57. Society of Tribologists & Lubrication Engineers

    EIN 912119649 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  58. Society of University Otolaryngologists

    EIN 237120206 · Headquarters: Oak Brook, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Society of Urodynamics Female Pelvic Med& Urogenital Reconstrn

    EIN 223274128 · Headquarters: SCHAUMBURG, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Society of Wetland Scientists Prof Cert Program

    EIN 561285570 · Headquarters: HOFFMAN ESTATES, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Society of Women Engineers

    EIN 223192115 · Headquarters: Mossville, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Society of Women Engineers

    EIN 300591038 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Society of Women Engineers

    EIN 311284802 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  64. Society of Women Engineers

    EIN 363657969 · Headquarters: Palatine, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Society of Women Engineers

    EIN 611524559 · Headquarters: Peoria, IL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  66. Society of Women Engineers

    EIN 912077884 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  67. Society of Women in Urology Inc

    EIN 364125028 · Headquarters: SCHAUMBURG, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Society of Young People of Sant Caterina Mutual Benefit

    EIN 363248949 · Headquarters: MOUNT PROSPECT, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Society of Young People of Sant Caterina Mutual Benefit Grand Lodg

    EIN 363182323 · Headquarters: MOUNT PROSPECT, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Sod Growers Association of Mid America

    EIN 366139322 · Headquarters: MANTENO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  71. Soft-coated Wheaten Terrier Club of Greater St Louis

    EIN 431336760 · Headquarters: Mount Vernon, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Soil and Water Conservation Society

    EIN 371083178 · Headquarters: Mendota, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Sojourn Shelter and Services Inc

    EIN 510139118 · Headquarters: SPRINGFIELD, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Sokol Spirit

    EIN 362250163 · Headquarters: BROOKFIELD, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Sokol United

    EIN 366111428 · Headquarters: WILLOWBROOK, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. Sol Strauss Charitable Trust Xxxxx5006

    EIN 356012195 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  77. Solar Rating & Certification Corporation

    EIN 521220979 · Headquarters: COUNTRY CLUB HILLS, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Solutions for Care

    EIN 237176798 · Headquarters: NORTH RIVERSIDE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Somebody Cares Community Action Program-nfp

    EIN 820550253 · Headquarters: Grayslake, IL, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  80. Something

    EIN 261727955 · Headquarters: chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  81. Somonauk Cemetery Association

    EIN 361796515 · Headquarters: SANDWICH, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Somonauk Wrestlers Club

    EIN 471934572 · Headquarters: Somonauk, IL, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  83. Somos Logan Square

    EIN 814701332 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Son of Light Lodge Aar-fam

    EIN 814408629 · Headquarters: chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  85. Sonja & F Conrad Fischer Foundation

    EIN 366941059 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  86. Sons of Italy in America

    EIN 363607504 · Headquarters: Burbank, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Sons of Italy in America

    EIN 431961335 · Headquarters: TINLEY PARK, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Sons of Italy in America

    EIN 431961347 · Headquarters: Tinley Park, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  89. Sons of Norway

    EIN 237326322 · Headquarters: Leland, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Sons of Norway

    EIN 237525770 · Headquarters: Lombard, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Sons of Norway

    EIN 237525776 · Headquarters: New Lenox, IL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  92. Sons of Norway

    EIN 237525778 · Headquarters: Woodstock, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Sons of Norway

    EIN 237525779 · Headquarters: Rockton, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Sons of Norway

    EIN 363304905 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  95. Sons of Norway

    EIN 832166370 · Headquarters: Cobden, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Sons of the American Legion

    EIN 371382032 · Headquarters: Springfield, IL, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  97. Sons of the American Legion Sq755

    EIN 473937297 · Headquarters: Manteno, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Sons of the American Legion Squadro N

    EIN 562441033 · Headquarters: RANTOUL, IL, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  99. Sons of the American Legion Squadron 1200

    EIN 471067477 · Headquarters: crete, IL, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  100. Sons of the American Legion Squadron 1255

    EIN 450565249 · Headquarters: Belleville, IL, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

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