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. Sistahs

    EIN 272957248 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  2. Sister Cities Association of Belvidere Illinois Inc

    EIN 363581593 · Headquarters: Belvidere, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Sister City Association of Springfield Illinois

    EIN 371241500 · Headquarters: Springfield, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Sisters Network Chicago Chapter

    EIN 364186289 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Sisters of One Soul

    EIN 300616499 · Headquarters: Naperville, IL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  6. Sisters of the Word

    EIN 994795774 · Headquarters: Wheaton, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. Sithub

    EIN 810881153 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Sitzmark Ski Club Illinois

    EIN 366401211 · Headquarters: Libertyville, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. SIU Credit Union

    EIN 370722141 · Headquarters: Carbondale, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Siuc Baptist Collegiate Ministries Booster Club

    EIN 371240513 · Headquarters: Carbondale, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  11. Siue Credit Union

    EIN 370814055 · Headquarters: Edwardsville, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  12. Sivananda Yoga Vedanta Centre

    EIN 363715589 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  13. Sjo Hs Ffa Alumni and Supporters

    EIN 993954130 · Headquarters: URBANA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Sjo Youth Wrestling Club

    EIN 811301202 · Headquarters: SAINT JOSEPH, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  15. Sjostrom & Sons Foundation

    EIN 363225935 · Headquarters: ROCKFORD, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  16. Ski Klub of Illinois

    EIN 376054603 · Headquarters: Decatur, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. Skidmore Owings & Merrill Foundation

    EIN 362969068 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  18. Skin Angels Inc

    EIN 331797788 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Skin of Color Society

    EIN 830401191 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Skinner School Forum

    EIN 363490221 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Sklare Family Foundation

    EIN 363804977 · Headquarters: Skokie, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  22. Skokie Amateur Hockey Association

    EIN 363611080 · Headquarters: SKOKIE, IL, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  23. Skokie Art Guild

    EIN 010964612 · Headquarters: SKOKIE, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  24. Skokie Country Club

    EIN 361785860 · Headquarters: GLENCOE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Skokie Country Club Educational Foundation

    EIN 363242939 · Headquarters: WINNETKA, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  26. Skokie Fop Lodge 68 Shop with a Cop

    EIN 473719194 · Headquarters: Skokie, IL, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  27. Skokie Historical Society

    EIN 362986015 · Headquarters: Skokie, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Skokie Tennis Association

    EIN 473180407 · Headquarters: Skokie, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Skokie Valley Skating Club

    EIN 366117724 · Headquarters: EVANSTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. Skomielna Biala Parish Club Nfp

    EIN 262714828 · Headquarters: SKOKIE, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Sky Soaring Inc

    EIN 237332729 · Headquarters: HAMPSHIRE, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  32. Slatington Chapt 379 Women of the Moose

    EIN 232316518 · Headquarters: Mooseheart, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  33. Sleep Research Society (SRS)

    EIN 237125856 · Headquarters: Darien, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Slg Cohen Foundation Inc

    EIN 363639861 · Headquarters: PEORIA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  35. Slipher Vesto M Tw Xxxxx0003

    EIN 866065266 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  36. Slovak American Sokol Krivan

    EIN 366084811 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  37. Slovak Athletic Association

    EIN 363016072 · Headquarters: WESTCHESTER, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Slovak Catholic Sokol 11

    EIN 237522830 · Headquarters: Palos Hills, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Slovak Catholic Sokol 257

    EIN 237523003 · Headquarters: Naperville, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  40. Slovak Gymnastic Union Sokol Lodge

    EIN 364228701 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  41. Slovak Studies Association

    EIN 222459410 · Headquarters: Urbana, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Slovene National Benefit Society

    EIN 237524246 · Headquarters: Palos Hills, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Slovene National Benefit Society

    EIN 237524247 · Headquarters: LaSalle, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Slovene National Benefit Society

    EIN 237524253 · Headquarters: Lemont, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Slovene National Benefit Society

    EIN 237524523 · Headquarters: Lemont, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Slovene National Benefit Society

    EIN 237524570 · Headquarters: LaGrange Highlands, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Slow Food USA Inc

    EIN 205157973 · Headquarters: Springfield, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Smacna of Northern Illinois Inc

    EIN 362656769 · Headquarters: ROCKFORD, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  49. Smail Family Foundation

    EIN 366136148 · Headquarters: Glenview, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  50. Small Business Growth Cor

    EIN 371119582 · Headquarters: SPRINGFIELD, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Smart Change Inc Nfp

    EIN 923769287 · Headquarters: ROCK FALLS, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  52. Smart Local 265 Education and Training Trust Fund

    EIN 366148078 · Headquarters: DOWNERS GROVE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Smart Local 265 Labor Management Cooperative Committee Trust Fund

    EIN 364146794 · Headquarters: DOWNERS GROVE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Smart Local 265 Welfare Fund

    EIN 362356062 · Headquarters: DOWNERS GROVE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Smile Center

    EIN 455628723 · Headquarters: Alton, IL, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  56. Smith Church Fund Ta Xxxxx7009

    EIN 226021858 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  57. Smith Library

    EIN 376037551 · Headquarters: Lexington, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. Smithton Commercial Club

    EIN 376030251 · Headquarters: Smithton, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Smithton Volunteer Fire Co

    EIN 376046839 · Headquarters: Smithton, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Smocking Arts Guild of America Inc

    EIN 272368096 · Headquarters: Naperville, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  61. Smocking Arts Guild of America Inc

    EIN 581589428 · Headquarters: Park Ridge, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sms Class of 1989 Inc

    EIN 262834187 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  63. Snafu Club

    EIN 362301624 · Headquarters: Libertyville, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  64. Snc Limbach Samaj Nfp

    EIN 920768536 · Headquarters: BLOOMINGDALE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  65. Sneakerheartz Company

    EIN 833653865 · Headquarters: Naperville, IL, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  66. Snider Family Foundation

    EIN 366064864 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  67. Snobs Corp

    EIN 842997385 · Headquarters: Belvidere, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Snohomish Valley Chapter 2329 Women of the Moose

    EIN 205763942 · Headquarters: Mooseheart, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. Snowseekers

    EIN 363358699 · Headquarters: Libertyville, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Snuggles

    EIN 461031261 · Headquarters: Deland, IL, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  71. Soangetaha Country Club

    EIN 370523530 · Headquarters: GALESBURG, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Soaring Eagle Wings Ministry

    EIN 204167024 · Headquarters: BENTON, IL, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  73. Soaring Minds Inc Nfp

    EIN 933015701 · Headquarters: LINCOLNWOOD, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Soccer Assoc for Youth

    EIN 364383581 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Soccer Assoc for Youth

    EIN 880609469 · Headquarters: Lockport, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  76. Social Enterprise Chicago

    EIN 870937858 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Social Responsibility Chicago

    EIN 362916880 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  78. Social Security Retirees Club

    EIN 262641512 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Societa Di Mutuo Soccorsso Operaia Venta

    EIN 361909878 · Headquarters: ROCKFORD, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Societa Operaic Di Mutto Soccorossa Amaseno Provinci De Roma

    EIN 823984635 · Headquarters: CHICAGO HEIGHTS, IL, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  81. Society for Academic Achievement -Saa-

    EIN 370798793 · Headquarters: Quincy, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Society for Adolescent Health and Medicine

    EIN 237035351 · Headquarters: SCHAUMBURG, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Society for Basic Urologic Research Inc

    EIN 363607930 · Headquarters: EAST DUNDEE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. Society for Cardiovascular Magnetic Resonance

    EIN 223293645 · Headquarters: EAST DUNDEE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Society for Contemporary Art C-O The Art Institute of Chicago

    EIN 366055526 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Society for Information Management Chicago Chapter

    EIN 362632473 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  87. Society for Neuroscience

    EIN 363136029 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 237057930 · Headquarters: Prairie City, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 366109985 · Headquarters: Silvis, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  90. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 366125657 · Headquarters: ORLAND PARK, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 366142835 · Headquarters: Downers Grove, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 366143948 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 366145461 · Headquarters: Sycamore, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 366145465 · Headquarters: Crystal Lake, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 370404033 · Headquarters: Stewardson, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 376036835 · Headquarters: Roxana, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 376076459 · Headquarters: Waterloo, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Society for Preservation & Encourmt of Barbershop Quartet Singing Amer

    EIN 510208181 · Headquarters: Tampico, IL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  99. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 366142802 · Headquarters: SIDNEY, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  100. Society for Preservation & Encrgmnt of Barbershop Quartet Singing Amer

    EIN 376046846 · Headquarters: SPRINGFIELD, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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