| Friendship Community PlaceChicago | Form 990-EZ | $164,101FY2025 |
| Chicago Winds IncorporationChicago | Form 990-EZ | $164,039FY2025 |
| Illinois Society of Allergy & Clinical ImmunologyBurr Ridge | Form 990-EZ | $164,015FY2025 |
| St Charles Booster ClubSaint Charles | Form 990 | $163,890FY2025 |
| Glenview History CenterGlenview | Form 990 | $163,632FY2025 |
| Katharine Manor Condominium AssociationNaperville | Form 990-EZ | $163,504FY2025 |
| Illinois Federation of Humane SocietiesChicago | Form 990-EZ | $162,970FY2025 |
| Altakafol FoundationWorth | Form 990-EZ | $162,792FY2025 |
| Human Resources Development Institute IncChicago | Form 990 | $162,169FY2025 |
| Brian Piccolo Cancer Research Fund IncChicago | Form 990-EZ | $162,149FY2025 |
| Parents for Education-District 135Orland Park | Form 990 | $161,981FY2024 |
| Ailbe Assisted Housing CorporationChicago | Form 990 | $161,939FY2025 |
| Friends of the Oak Park ConservatoryOak Park | Form 990-EZ | $161,922FY2025 |
| Belleville East Lancer Band Parents Organization IncSwansea | Form 990-EZ | $161,792FY2025 |
| Oak Park Art LeagueOak Park | Form 990-EZ | $161,497FY2025 |
| Deerfield High School Booster ClubDeerfield | Form 990-EZ | $161,462FY2025 |
| The Institute of Medicine of ChicagoChicago | Form 990-EZ | $160,834FY2025 |
| American Society of Heating Refrigerating & a-C EngineersChicago | Form 990 | $160,061FY2025 |
| Grow in AmericaChampaign | Form 990-EZ | $159,980FY2025 |
| Franklin Creek Conservation AssociationFranklin Grove | Form 990 | $159,659FY2025 |
| White County Historical SocietyCarmi | Form 990 | $159,065FY2025 |
| Pop Warner Little Scholars IncLockport | Form 990-EZ | $158,704FY2025 |
| Quincy High School Football Booster ClubQuincy | Form 990 | $158,667FY2025 |
| American Inns of Court FoundationChicago | Form 990-EZ | $158,665FY2025 |
| Henry County Youth Services Bureau IncKewanee | Form 990-EZ | $158,298FY2026 |
| Jackson Park Yacht Club Sailing SchoolChicago | Form 990-EZ | $158,096FY2025 |
| Friends of the Heralds NFPWheaton | Form 990-EZ | $157,699FY2025 |
| Farm and Land FoundationChicago | Form 990 | $157,545FY2024 |
| Ignatia FoundationChicago | Form 990-EZ | $157,459FY2025 |
| Nautical Research Guild IncWestmont | Form 990-EZ | $157,213FY2026 |
| The Twelve Step HouseChicago | Form 990 | $157,119FY2025 |
| Harold E Marx Memorial FundChicago | Form 990 | $155,696FY2025 |
| Coles County Mental Health Residential Alternatives IncMattoon | Form 990-EZ | $155,600FY2025 |
| Wilmington Coalition for a Healthy CommunityWilmington | Form 990-EZ | $155,308FY2024 |
| Ernest Hemingway Foundation of Oak ParkOak Park | Form 990 | $154,449FY2025 |
| IssuelabChicago | None required | $154,432FY2012 |
| Illinois Congress of Parents TeachersNorthbrook | Form 990-EZ | $153,729FY2025 |
| The Symphony of Oak Park & River ForestOak Park | Form 990-EZ | $153,151FY2025 |
| Council of Academic Deans for Research Education InstitutionsChampaign | Form 990-EZ | $152,972FY2025 |
| Beta Sigma Psi Educational FoundationShiloh | Form 990 | $152,062FY2026 |
| Renegades High School Hockey Club IncVilla Park | Form 990-EZ | $151,655FY2025 |
| Crystal Lake Babe Ruth Baseball League IncCrystal Lake | Form 990-EZ | $150,924FY2025 |
| Kings Daughters OrganizationSpringfield | Form 990-EZ | $150,719FY2026 |
| Warrior Youth Athletics IncWest Chicago | Form 990-EZ | $150,495FY2025 |
| Japanese American Citizens LeagueChicago | Form 990 | $150,494FY2024 |
| American Planning AssociationDeKalb | Form 990-EZ | $149,994FY2024 |
| Peoria Area Civic ChoralePeoria | Form 990-EZ | $149,784FY2025 |
| Auxiliary of John H Stoger Jr Hospital of Cook CountyChicago | Form 990-EZ | $148,132FY2024 |
| The Alliance for Early ChildhoodWinnetka | Form 990-EZ | $147,943FY2025 |
| 112 Education FoundationHighwood | Form 990-EZ | $146,947FY2026 |