| District 39 Educational FoundationWilmette | Form 990-N | No figure |
| RMCC Scholarship FundLong Grove | Form 990-N | No figure |
| Lincoln-Douglas PTOQuincy | Form 990-EZ | $38,754FY2026 |
| Cho FoundationGlenview | Form 990-N | No figure |
| Illinois Congress of Parents TeachersPlainfield | Form 990-EZ | $38,581FY2026 |
| Rome Grade School FoundationMount Vernon | Form 990-EZ | $38,553FY2024 |
| Gilberts Elementary PTO IncGilberts | Form 990-EZ | $38,339FY2025 |
| Chicago West Suburban Unico IncPark Ridge | Form 990-EZ | $38,239FY2025 |
| Masjid E RahmatChicago | Form 990-N | No figure |
| Friends of the Quincy Public LibraryQuincy | Form 990-N | No figure |
| Lake Zurich High School Bear Booster ClubLake Zurich | Form 990-EZ | $37,631FY2025 |
| Fox Valley Patriotic OrganizationBatavia | Form 990 | $37,600FY2025 |
| Red Oak Elementary School PTO NFPHighland Park | Form 990-EZ | $37,510FY2026 |
| Phandemonium IncArlington Heights | Form 990-EZ | $37,399FY2026 |
| SCHS Booster Club IncSalem | Form 990-EZ | $37,384FY2025 |
| Connell F Smith & Homer Brown Scholarship and Education FundMarion | Form 990-EZ | $37,122FY2025 |
| Coles County Farm Bureau FoundationCharleston | Form 990-N | No figure |
| District 59 Education FoundationElk Grove Village | Form 990-N | No figure |
| Coach Landry Scholarship Foundation LtdWashington | Form 990-N | No figure |
| Mill Creek Elementary School Parent Teacher OrganizationGeneva | Form 990-N | No figure |
| Sheilah a Doyle FoundationLombard | Form 990-EZ | $36,289FY2025 |
| Public Library Association of Farmer CityFarmer City | Form 990-N | No figure |
| International Family Therapy Association IncRock Island | Form 990-N | No figure |
| Illinois Judicial Council Foundation IncChicago | Form 990-N | No figure |
| Iroquois County Community Unit School Dist No 9 Academic FND IncWatseka | Form 990-N | No figure |
| Western Society of EngineersRosemont | Form 990-N | No figure |
| Parent Teacher Organization of Barrington High SchoolBarrington | Form 990-N | No figure |
| Hancock County Farm Bureau FoundationCarthage | Form 990-EZ | $35,806FY2025 |
| Sacred Heart Du Quoin Education FoundationDu Quoin | Form 990-N | No figure |
| Sexpectations Chicago NFPChicago | Form 990-N | No figure |
| Williamsburg Elementary School Parent-Teacher Organization GenevaGeneva | Form 990-EZ | $35,718FY2025 |
| Friends of Ray SchoolChicago | Form 990-EZ | $35,531FY2025 |
| Cougar BoostersPlainfield | Form 990-EZ | $35,442FY2026 |
| West Aurora Band Boosters the Association NFPAurora | Form 990-N | No figure |
| QC Elite Team 648Moline | Form 990-N | No figure |
| Western Avenue School PTOGeneva | Form 990-EZ | $35,229FY2025 |
| Chaco Fund IncBuffalo Grove | Form 990-N | No figure |
| Most Holy Redeemer School FoundationEvergreen Park | Form 990-EZ | $35,004FY2025 |
| Liberty Seated Collectors ClubVernon Hills | Form 990-N | No figure |
| Norwood Park School PTOChicago | Form 990-N | No figure |
| Indica IncElgin | Form 990-N | No figure |
| Ursuline Academy FoundationSpringfield | Form 990-N | No figure |
| Lafayete Gatling Sr Scholarship FundChicago | Form 990-EZ | $34,764FY2024 |
| Hoffman Estates Loyal PartnersHoffman Estates | Form 990-EZ | $34,727FY2026 |
| Sophies Home & After School IncChicago | Form 990-N | No figure |
| Illinois Valley Youth Soccer League IncPeru | Form 990-N | No figure |
| Ravinia Parent Teacher OrganizationHighland Park | Form 990-N | No figure |
| Edgar Allan Poe Parent Teacher OrganizationArlington Heights | Form 990-N | No figure |
| Healthcare Surfaces SummitRosemont | Form 990-N | No figure |
| Blacks Academy of Excellence IncZion | Form 990-N | No figure |