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. International Association of Machinists & Aerospace Workers

    EIN 430793026 · Headquarters: NEW ATHENS, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. International Association of Machinists & Aerospace Workers

    EIN 941116539 · Headquarters: Elk Grove Village, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. International Association of Machinists Automobile I

    EIN 360759680 · Headquarters: AURORA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. International Association of R S Prussia Collectors Inc

    EIN 351678438 · Headquarters: Waterman, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. International Association of Rehabilitation Professionals

    EIN 541205094 · Headquarters: PARK RIDGE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. International Association of Sheet Metal Air Rail & Transportation

    EIN 356004001 · Headquarters: Carmi, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. International Association of Sheet Metal Air Rail & Transportation

    EIN 366000420 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  8. International Association of Sheet Metal Air Rail & Transportation

    EIN 366009115 · Headquarters: Midlothian, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. International Association of Sheet Metal Air Rail & Transportation

    EIN 366131179 · Headquarters: KANKAKEE, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. International Association of Sheet Metal Air Rail & Transportation

    EIN 366165136 · Headquarters: Alsip, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  11. International Association of Sheet Metal Air Rail & Transportation

    EIN 376006570 · Headquarters: SAINT ELMO, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. International Association of Sheet Metal Air Rail & Transportation

    EIN 376041275 · Headquarters: Danville, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. International Association of Sheet Metal Air Rail and Transportaion

    EIN 366164523 · Headquarters: elgin, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  14. International Association of Tamil Research USA

    EIN 933488663 · Headquarters: Naperville, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. International Association of Workforce Professionals Inc

    EIN 396081787 · Headquarters: Huntley, IL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  16. International Bowling Media Association

    EIN 364745483 · Headquarters: Mahomet, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. International Brotherhd - Boilrmkrs Ir Shp Bldrs Blcksmth Frgrs & Hlpr

    EIN 237109469 · Headquarters: ROSELLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. International Brotherhd - Boilrmkrs Ir Shp Bldrs Blcksmth Frgrs & Hlpr

    EIN 376046412 · Headquarters: East Alton, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. International Brotherhood of 50 Tcwh

    EIN 370347465 · Headquarters: SWANSEA, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. International Brotherhood of Boiler Makers Iron Ship Builders Blacksmi

    EIN 366130122 · Headquarters: Diamond, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. International Brotherhood of Boiler Makers Iron Ship Builders Blacksmi

    EIN 370136731 · Headquarters: East Alton, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. International Brotherhood of Boiler Makers Iron Ship Builders Blacksmi

    EIN 371036731 · Headquarters: East Alton, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. International Brotherhood of Boiler Makers Iron Ship Builders Blacksmi

    EIN 376046592 · Headquarters: East Alton, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. International Brotherhood of Boiler Makers Iron Ship Builders Blacksmi

    EIN 416008026 · Headquarters: Streamwood, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. International Brotherhood of Boilermaker S Iron Ship Builders

    EIN 362906387 · Headquarters: East Alton, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. International Brotherhood of Boilermaker S Iron Ship Builders Blacksmiths Forgers

    EIN 742558070 · Headquarters: East Alton, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. International Brotherhood of Boilermakers Iron Ship Builders

    EIN 366164979 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. International Brotherhood of Boilermakers Iron Ship Builders

    EIN 371251075 · Headquarters: East Alton, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. International Brotherhood of Boilermakers Iron Ship Builders

    EIN 376046268 · Headquarters: East Alton, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. International Brotherhood of Boilermakers Local #363

    EIN 370184500 · Headquarters: BELLEVILLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. International Brotherhood of Boilermakers Local Lodge No One

    EIN 361264124 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. International Brotherhood of Electr Ical Workers Local 34 Receiving Tr

    EIN 237093640 · Headquarters: BARTONVILLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  33. International Brotherhood of Electrical Wkrs 364 Bldg Corp

    EIN 363163270 · Headquarters: ROCKFORD, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. International Brotherhood of Electrical Workers

    EIN 356071229 · Headquarters: Hickory Hills, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  35. International Brotherhood of Electrical Workers

    EIN 362530104 · Headquarters: WADSWORTH, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  36. International Brotherhood of Electrical Workers

    EIN 366168024 · Headquarters: Frankfort, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. International Brotherhood of Electrical Workers

    EIN 370802312 · Headquarters: Mt Zion, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. International Brotherhood of Electrical Workers

    EIN 426084799 · Headquarters: Galesburg, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  39. International Brotherhood of Electrical Workers 117

    EIN 361264212 · Headquarters: CRYSTAL LAKE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  40. International Brotherhood of Electrical Workers 145

    EIN 361264215 · Headquarters: MOLINE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. International Brotherhood of Electrical Workers Local 1220

    EIN 362110340 · Headquarters: DOWNERS GROVE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. International Brotherhood of Electrical Workers Local 1379

    EIN 426071215 · Headquarters: Milan, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  43. International Brotherhood of Electrical Workers Local 176

    EIN 361264196 · Headquarters: JOLIET, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. International Brotherhood of Electrical Workers Local 701

    EIN 362151869 · Headquarters: WARRENVILLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. International Brotherhood of Electrical Workers Local 702

    EIN 370347404 · Headquarters: WEST FRANKFORT, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. International Brotherhood of Electrical Workers Local No 538

    EIN 370276652 · Headquarters: DANVILLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. International Brotherhood of Electrical Workers Local No 601

    EIN 370389393 · Headquarters: CHAMPAIGN, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  48. International Brotherhood of Electrical Workers Local No 649

    EIN 370347380 · Headquarters: ALTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  49. International Brotherhood of Electrical Workers Local Union #51

    EIN 370605064 · Headquarters: SPRINGFIELD, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  50. International Brotherhood of Electrical Workers Local Union 109

    EIN 362028529 · Headquarters: MILAN, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  51. International Brotherhood of Electrical Workers Local Union No 134

    EIN 361264170 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. International Brotherhood of Electrical Workers Local Union No 196

    EIN 361264210 · Headquarters: HUNTLEY, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. International Brotherhood of Electrical Workers Local Union No 34

    EIN 370347390 · Headquarters: BARTONVILLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. International Brotherhood of Electrical Workers Lu 214

    EIN 237073910 · Headquarters: Lisle, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  55. International Brotherhood of Electrical Workers-local Union No 193

    EIN 370347410 · Headquarters: SPRINGFIELD, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. International Brotherhood of Joint Apprenticeship and Training

    EIN 366456299 · Headquarters: AURORA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. International Brotherhood of Painters & Allied Trades District Council #14

    EIN 361593286 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. International Brotherhood of Painters and Allied Trades Local Union 184

    EIN 361264223 · Headquarters: JOLIET, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. International Brotherhood of Painters Local 191

    EIN 360986428 · Headquarters: CHICAGO RIDGE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. International Brotherhood of Teamsters 371 Teamsters Local Union

    EIN 361882108 · Headquarters: ROCK ISLAND, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. International Brotherhood of Teamsters 710 Health & Welfare Fund

    EIN 362153764 · Headquarters: MOKENA, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  62. International Brotherhood of Teamsters 743 Local Employees Union

    EIN 361757834 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  63. International Brotherhood of Teamsters Gnl Chauffeurs Helpers Drivers Lcl 325

    EIN 361868062 · Headquarters: ROCKFORD, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. International Brotherhood of Teamsters Local 179

    EIN 361264290 · Headquarters: JOLIET, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. International Brotherhood of Teamsters Local 525

    EIN 370347422 · Headquarters: ALTON, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  66. International Brotherhood of Teamsters Local 705

    EIN 361265700 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. International Brotherhood of Teamsters Local 731 Union

    EIN 361053335 · Headquarters: BURR RIDGE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  68. International Brotherhood of Teamsters Local 734 Union

    EIN 360768070 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  69. International Brotherhood of Teamsters Local 777

    EIN 361853155 · Headquarters: LYONS, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  70. International Brotherhood of Teamsters Local 786

    EIN 360852820 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. International Brotherhood of Teamsters Local Union 710

    EIN 361460890 · Headquarters: MOKENA, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. International Brotherhood of Teamsters Local Union No 330

    EIN 361264233 · Headquarters: ELGIN, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  73. International Brotherhood of Teamsters Local Union No 673

    EIN 361264300 · Headquarters: WEST CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  74. International Brotherhood of Teamsters Produce Drivers and Florists Local 703

    EIN 361264227 · Headquarters: DOWNERS GROVE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  75. International Carnival Glass Assn Inc

    EIN 232138375 · Headquarters: Sycamore, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. International Carwash Association Inc

    EIN 386107343 · Headquarters: WHEATON, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. International Catholic Deaf Association - US

    EIN 136158279 · Headquarters: Carol Stream, IL, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  78. International Center for Valuation Certification

    EIN 465678311 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  79. International Cesarean Awareness Network

    EIN 270736147 · Headquarters: Countryside, IL, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  80. International Christian Ministries Inc

    EIN 362973244 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  81. International College of Surgeons Womans Aux

    EIN 366066811 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. International Comanche Society Incorporated

    EIN 237356844 · Headquarters: NORTHBROOK, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. International Corrugated Case Association

    EIN 364239889 · Headquarters: ITASCA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. International Embryo Technology Society

    EIN 510173101 · Headquarters: CHAMPAIGN, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. International Embryo Technology Society Foundation

    EIN 371261380 · Headquarters: CHAMPAIGN, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. International Federation of Professional & Techical Engineers

    EIN 366108118 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. International Fellowship of Christians and Jews

    EIN 363256096 · Headquarters: Chicago, IL, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. International Flying Club

    EIN 364448104 · Headquarters: Naperville, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. International Flying Farmers Memorial Fund

    EIN 480897344 · Headquarters: Plainfield, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  90. International Foodservice Manufacturers Association

    EIN 362406517 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. International Housewares Association

    EIN 361239205 · Headquarters: ROSEMONT, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  92. International Housewares Representatives Association

    EIN 363943838 · Headquarters: HIGHLAND PARK, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  93. International Institute for Secular Humanistic Judaism

    EIN 382640824 · Headquarters: DEERFIELD, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. International Interior Design Assn

    EIN 431657122 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. International Israel Alliance

    EIN 843583208 · Headquarters: GLENVIEW, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  96. International Latino Cultural Center of Chicago

    EIN 363580462 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. International Live Events Association Austin Chapter

    EIN 742996525 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  98. International Live Events Association Greater Philadelphia Chapter

    EIN 232523096 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  99. International Live Events Association Inc

    EIN 363871643 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. International Live Events Association Las Vegas Chapter

    EIN 880423148 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

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