Illinois Land Trusts by Region
NORTHWEST
- Middle Rock Conservation Partners
- The Prairie Enthusiasts
- Prairie Preservation Society of Ogle County
- Natural Land Institute
- Jane Addamsland Conservation Foundation
- Jo Daviess Conservation Association
- Franklin Creek Conservation Association
Northwest Illinois Audubon Society
Prairie Preservation Society of Ogle County

NORTHEAST
- The Land Conservancy of McHenry County
- The Conservation Foundation
- Sugar Grove Foundation
- Openlands
- Lake Forest Open Lands Association
- Lake Bluff Openlands Association
- Barrington Area Conservation Trust
- Citizens for Conservation
- Land Conservancy of Lake County
- NeighborSpace
- Friends of the Kankakee

CENTRAL WEST
- Sangamon Conservancy Trust
- Prairie Land Conservancy
- Macon County Conservation Foundation
- Great Rivers Land Trust
- Friends of Sangamon Valley
CENTRAL EAST
- Parklands Foundation
- Land Conservation Foundation
- Grand Prairie Friends
- Heartland Pathways
- Prairielands Preservation Foundation
- Prairie Lands Foundation
SOUTHWEST
- Heartlands Conservancy
- Green Earth, Inc.
- CLIFFTOP
- Karst Conservancy of Illinois
- Original Kaskaskia Area Wilderness, Inc. (OKAW Inc.)
- St. Clair County Greenspace Foundation
Statewide Areas of Operation
- Ducks Unlimited
- Illinois Audubon Society
Pheasants Forever/Quails Forever - The Nature Conservancy of Illinois
