| Senior Citizens of Montgomery County IncorporatedTaylor Springs | Form 990-EZ | $51,029FY2025 |
| Pku Organization of IllinoisPalatine | Form 990-EZ | $50,967FY2025 |
| Parole Illinois IncChicago | Form 990-EZ | $50,845FY2025 |
| Jacksonville Kiwanis FoundationJacksonville | Form 990-EZ | $50,810FY2025 |
| Pride IncorporatedGodfrey | Form 990-EZ | $50,730FY2025 |
| Illinois Congress of Parents TeachersGlen Ellyn | Form 990-EZ | $50,467FY2024 |
| Swedish-American Historical SocietyChicago | Form 990 | $50,466FY2025 |
| Anesthesia FoundationSchaumburg | Form 990 | $50,091FY2024 |
| Illinois Congress of Parents TeachersElmhurst | Form 990-EZ | $50,064FY2025 |
| Illinois Congress of Parents TeachersGlenview | Form 990-EZ | $49,725FY2025 |
| Center for Family ConsultationEvanston | Form 990-N | No figure |
| Senior Citizens Center of Oak Park & River ForestOak Park | Form 990-N | No figure |
| Stark County Community Services IncToulon | Form 990-N | No figure |
| Illinois Congress of Parents TeachersDowners Grove | Form 990-EZ | $48,871FY2025 |
| Friends of American WritersChicago | Form 990-N | No figure |
| Norridge Youth Activities CommitteeNorridge | Form 990-N | No figure |
| Barrington Area Development Council IncBarrington | Form 990-N | No figure |
| Little League Baseball IncStreamwood | Form 990-EZ | $48,041FY2025 |
| Murray Parents AssociationCentralia | Form 990-N | No figure |
| Illinois Grade School Music AssociationPlainfield | Form 990-N | No figure |
| Friends of the Shapiro Developmental CenterKankakee | Form 990-N | No figure |
| Owasippe Staff Association IncWestchester | Form 990 | $47,994FY2025 |
| Flossmoor Service LeagueFlossmoor | Form 990-EZ | $47,802FY2025 |
| Soccer Assoc for YouthLockport | Form 990-N | No figure |
| Illinois Congress of Parents TeachersDowners Grove | Form 990-N | No figure |
| Canons Regular of Saint Thomas AquinasMadison | Form 990-N | No figure |
| Little League Baseball IncBeardstown | Form 990-EZ | $47,455FY2024 |
| Parent Booster USA IncAurora | Form 990-EZ | $47,452FY2026 |
| Marie Wilkinson Child Development Center IncAurora | Form 990-N | No figure |
| Pittsfield Community CenterPittsfield | Form 990 | $47,329FY2025 |
| Kiwanis International IncPekin | Form 990-EZ | $47,308FY2025 |
| Philippine Economic and Cultural EndowmentFairview Heights | Form 990-N | No figure |
| Rockford Lions Club Charity Foundation IncRockford | Form 990-EZ | $46,548FY2026 |
| Our Savior Grade School Education FoundationJacksonville | Form 990-N | No figure |
| One-Five FoundationPalatine | Form 990-EZ | $46,486FY2026 |
| Illinois Congress of Parents and TeachersAurora | Form 990-EZ | $46,427FY2025 |
| National Association of Health CoordinatorsRockford | Form 990-N | No figure |
| Barrington High School Horseshoe ClubFox River Grove | Form 990-EZ | $45,647FY2024 |
| Institute for Integrative Cancer Research and Education IncSkokie | Form 990-N | No figure |
| North Suburban Needlearts Guild LtdVernon Hills | Form 990-N | No figure |
| Helen Jodan Truitt Memorial Scholarship Fund TrustChillicothe | Form 990 | $45,411FY2025 |
| Aurora Rotary FoundationAurora | Form 990-N | No figure |
| Praireland Hospice IncGalesburg | Form 990 | $44,865FY2025 |
| Pleasant Plains Community ClubPleasant Plains | Form 990-N | No figure |
| General Federation of Womens ClubLincoln | Form 990-N | No figure |
| Illinois Valley Building Trades Charity Trust IncOttawa | Form 990-EZ | $44,579FY2025 |
| Alton Youth SymphonyAlton | Form 990 | $44,500FY2025 |
| McLean County Youth Hockey Assn IncBloomington | Form 990-N | No figure |
| People Care IncRiverside | Form 990-N | No figure |
| Friends of Ogden School IncChicago | Form 990-EZ | $44,433FY2024 |