| Childrens Earth FoundationChicago | Form 990-N | No figure |
| Association for the Wolf Lake Initiative -a NFP Corporation-Crete | Form 990-N | No figure |
| Douglas Discovery Garden IncDanville | Form 990-N | No figure |
| Callies Enviromental Scientific Learning CenterChicago | Form 990-N | No figure |
| Go Green Glen EllynGlen Ellyn | Form 990-N | No figure |
| North American Fruit ExplorersJacksonville | Form 990-N | No figure |
| Midwest Bonsai SocietyHighland Park | Form 990-N | No figure |
| Northern Illinois Iris SocietyElburn | Form 990-N | No figure |
| Duck Lake Waterway AssociationIngleside | Form 990-N | No figure |
| Ikebana International Chicago ChapterWinnetka | Form 990-N | No figure |
| Illinois Mosquito and Vector Control AssociationNorthfield | Form 990-N | No figure |
| Warner Park & GardensChicago | Form 990-N | No figure |
| Lincolnshire Garden ClubLincolnshire | Form 990-N | No figure |
| Great Lakes Sport Fishing Council IncElmhurst | Form 990-N | No figure |
| Glenview Golf GardenersNorthfield | Form 990-N | No figure |
| Chicago Recycling Coalition IncChicago | Form 990-N | No figure |
| Loon Lakes Mangt AssociationAntioch | Form 990-N | No figure |
| Caretakers of the Environment International USA IncFlossmoor | Form 990-N | No figure |
| Dellwood Foundation IncLockport | Form 990-N | No figure |
| Friends of the Rock River IncSouth Beloit | Form 990-N | No figure |
| Illinois Association of Environmental ProfessionalsRosemont | Form 990-N | No figure |
| Scenic IllinoisGlenview | Form 990-N | No figure |
| Palatine Park FoundationPalatine | Form 990-N | No figure |
| Hanover Park Park FoundationHanover Park | Form 990-N | No figure |
| Conservation Research InstituteGlen Ellyn | Form 990-N | No figure |
| Midewin Tallgrass Prairie AllianceJoliet | Form 990-N | No figure |
| Near North Preservation CoalitionChicago | Form 990-N | No figure |
| Wisconsin Illinois Lily SocietyLa Grange Park | Form 990-N | No figure |
| Partners for Parks FoundationLisle | Form 990-N | No figure |
| Deerpath Garden Club of Lake ForestDeer Park | Form 990-N | No figure |
| Churchill Park Advisory CouncilChicago | Form 990-N | No figure |
| United Sportmens Youth FoundationFreeport | Form 990-N | No figure |
| Stonegate Townhomes IncChicago | Form 990-N | No figure |
| Salt Creek Watershed NetworkLa Grange Park | Form 990-N | No figure |
| Silvis Garden Club IncSilvis | Form 990-N | No figure |
| Boone-Dutch Creeks Watershed AllianceWoodstock | Form 990-N | No figure |
| Kankakee River Basin CommissionKankakee | Form 990-N | No figure |
| International Erosion Control AssociationDeKalb | Form 990-N | No figure |
| Midwest Sustainability Group Inc NSTGrayslake | Form 990-N | No figure |
| Garden Club of EvanstonEvanston | Form 990-N | No figure |
| Illinois Orchid Society IncDeerfield | Form 990-N | No figure |
| Kewanee Chapter Izaak Walton League of America IncKewanee | Form 990-N | No figure |
| Gardeners of the North ShoreLincolnwood | Form 990-N | No figure |
| Perry County Sportsman ClubPinckneyville | Form 990-N | No figure |
| Illinois Soil and Water Conservation Districts FoundationSpringfield | Form 990-N | No figure |
| Keep Carbondale Beautiful IncCarbondale | Form 990-N | No figure |
| St Clair County Greenspace FoundationBelleville | Form 990-N | No figure |
| IL Association of Resource Conservation & Development AreasMacomb | Form 990-N | No figure |
| Kincaid Area Watershed Project IncMurphysboro | Form 990-N | No figure |
| Friends of Lake ShelbyvilleShelbyville | Form 990-N | No figure |