Anderson Lake State Fish & Wildlife Area

Established: 1947
Island: Fulton
Area: 2,247 acres

Illinois State Parks Official Website

Apple River Canyon State Park

Established: 1932
Island: Jo Daviess
Area: 297 acres

Illinois State Parks Official Website

Argyle Lake State Park

Established: 1948
Island: McDonough
Area: 1,700 acres

Illinois State Parks Official Website

Banner Marsh State Fish & Wildlife Area

Established: 1980's
Island: Fulton, Peoria
Area: 4,363 acres

Illinois State Parks Official Website

Beall Woods State Park

Established: 1966
Island: Wabash
Area: 635 acres

Illinois State Parks Official Website

Beaver Dam State Park

Established: 1947
Island: Macoupin
Area: 750 acres

Illinois State Parks Official Website

Buffalo Rock State Park

Established: 1928
Island: LaSalle
Area: 298 acres

Illinois State Parks Official Website

Cache River State Natural Area

Established: 1970
Island: Johnson
Area: 14,314 acres

Illinois State Parks Official Website

Castle Rock State Park

Established: 1921
Island: Ogle
Area: 2,000 acres

Illinois State Parks Official Website

Cave-In-Rock State Park

Established: 1929
Island: Hardin
Area: 204 acres

Illinois State Parks Official Website

Chain O'Lakes State Park

Established: 1945
Island: McHenry
Area: 1,700 acres

Illinois State Parks Official Website

Clinton Lakes State Recreation Area

Established: 1978
Island: DeWitt
Area: 9,300 acres

Illinois State Parks Official Website

Dixon Springs State Park

Established: 1946
Island: Pope
Area: 801 acres

Illinois State Parks Official Website

Eldon Hazlet State Recreation Area

Established: 1960
Island: Clinton
Area: 3,000 acres

Illinois State Parks Official Website

Ferne Clyffe State Park

Established: 1949
Island: Johnson
Area: 2,430 acres

Illinois State Parks Official Website

Fort Massac State Park

Established: 1908
Island: Massac
Area: 1,450 acres

Illinois State Parks Official Website

Fox Ridge State Park

Established: 1930's
Island: Coles
Area: 2,064 acres

Illinois State Parks Official Website

Frank Holten State Park

Established: 1964
Island: St. Clair
Area: 1,080 acres

Illinois State Parks Official Website

Fults Hill Prairie State Natural Area

Established: 1970
Island: Monroe
Area: 997 acres

Illinois State Parks Official Website

Giant City State Park

Established: 1927
Island: Jackson, Union
Area: 1,100 acres

Illinois State Parks Official Website

Goose Lake Prairie State Natural Area

Established: 1969
Island: Grundy
Area: 2,537 acres

Illinois State Parks Official Website

Harry "Babe" Woodyard State Natural Area

Established: 1996
Island: Vermilion
Area: 1,104 acres

Illinois State Parks Official Website

Hennepin Canal Parkway State Park

Established: 1970
Island: Bureau, Henry, Lee, Rock Island, Whiteside
Area: 244 acres

Illinois State Parks Official Website

Illinois Beach State Park

Established: 1948
Island: Lake
Area: 4,160 acres

Illinois State Parks Official Website

James "Pate" Phillips State Park

Established: 1991
Island: DuPage, Kane
Area: 3,432 acres

Illinois State Parks Official Website

Johnson-Sauk Trail State Recreation Area

Established: n/a
Island: Henry
Area: 1,365 acres

Illinois State Parks Official Website

Jubilee College State Park

Established: 1933
Island: Peoria
Area: 3,200 acres

Illinois State Parks Official Website

Kankakee River State Park

Established: 1938
Island: Kankakee, Will
Area: 4,000 acres

Illinois State Parks Official Website

Kickapoo State Recreation Area

Established: 1939
Island: Vermilion
Area: 2,842 acres

Illinois State Parks Official Website

Kidd Lake Marsh State Natural Area

Established: 1976
Island: Monroe
Area: 800 acres

Illinois State Parks Official Website

Kincaid Lake State Fish & Wildlife Area

Established: 1968
Island: Jackson
Area: 11,750 acres

Illinois State Parks Official Website

Lake Le-Aqua-Na State Park

Established: 1948
Island: Stephenson
Area: 715 acres

Illinois State Parks Official Website

Lake Murphysboro State Park

Established: 1948
Island: Jackson
Area: 1,022 acres

Illinois State Parks Official Website

Lincoln Trail State Park

Established: 1958
Island: Clark
Area: 1,023 acres

Illinois State Parks Official Website

Lowden State Park

Established: 1945
Island: Ogle
Area: 207 acres

Illinois State Parks Official Website

Matthiessen State Park

Established: 1943
Island: LaSalle
Area: 1,700 acres

Illinois State Parks Official Website

Mississippi Palisades State Park

Established: 1973
Island: Carroll
Area: 2,500 acres

Illinois State Parks Official Website

Moraine Hills State Park

Established: 1939
Island: McHenry
Area: 2,200 acres

Illinois State Parks Official Website

Moraine View State Recreation Area

Established: 1959
Island: McClain
Area: 1,687 acres

Illinois State Parks Official Website

Morrison-Rockwood State Park

Established: 1971
Island: Whiteside
Area: 1,164 acres

Illinois State Parks Official Website

Pere Marquette State Park

Established: 1931
Island: Jersey
Area: 8,050 acres

Illinois State Parks Official Website

Piney Creek Ravine State Natural Area

Established: 1972
Island: Jackson, Randolph
Area: 198 acres

Illinois State Parks Official Website

Prophetstown State Recreation Area

Established: 1947
Island: Whiteside
Area: 53 acres

Illinois State Parks Official Website

Ramsey Lake State Recreation Area

Established: n/a
Island: Fayette
Area: 1,980 acres

Illinois State Parks Official Website

Randolph County State Recreation Area

Established: 1958
Island: Randolph
Area: 1,101 acres

Illinois State Parks Official Website

Red Hills State Park

Established: 1943
Island: Lawrence
Area: 967 acres

Illinois State Parks Official Website

Rock Cut State Park

Established: 1955
Island: Winnebago
Area: 3,092 acres

Illinois State Parks Official Website

Rock Island Trail State Park

Established: 1989
Island: Peoria, Stark
Length: 26 miles

Illinois State Parks Official Website