List of census-designated places in Illinois
This is a list of census-designated places in the U.S. state of Illinois, by county.Adams County">Adams County, Illinois">Adams County
- North Quincy
Alexander County">Alexander County, Illinois">Alexander County
- Olive Branch
Champaign County">Champaign County, Illinois">Champaign County
- Lake of the Woods
- Penfield
- Seymour
Christian County">Christian County, Illinois">Christian County
- Langleyville
Clark County">Clark County, Illinois">Clark County
- West Union
Crawford County">Crawford County, Illinois">Crawford County
- Annapolis
- West York
Franklin County">Franklin County, Illinois">Franklin County
- Mulkeytown
Jackson County">Jackson County, Illinois">Jackson County
- Harrison
Jefferson County">Jefferson County, Illinois">Jefferson County
- Opdyke
Jo Daviess County">Jo Daviess County, Illinois">Jo Daviess County
- Apple Canyon Lake
- The Galena Territory
Kane County">Kane County, Illinois">Kane County
- Prestbury
Kendall County">Kendall County, Illinois">Kendall County
Oswego Township">Oswego Township, Kendall County, Illinois">Oswego Township
- Dayton
Northville Township">Northville Township, LaSalle County, Illinois">Northville Township
- Lake Holiday
Lake County">Lake County, Illinois">Lake County
- Knollwood
- Lake Catherine
- Long Lake
- Venetian Village
Antioch Township">Antioch Township, Lake County, Illinois">Antioch Township
- Channel Lake
Ela Township">Ela Township, Lake County, Illinois">Ela Township
- Forest Lake
Grant Township">Grant Township, Lake County, Illinois">Grant Township
- Fox Lake Hills
Warren Township">Warren Township, Lake County, Illinois">Warren Township
- Gages Lake
- Grandwood Park
Logan County">Logan County, Illinois">Logan County
- Beason
- Chestnut
- Cornland
Macon County">Macon County, Illinois">Macon County
- Boody
Madison County">Madison County, Illinois">Madison County
- Holiday Shores
- Mitchell
- Rosewood Heights
Mason County">Mason County, Illinois">Mason County
- Goofy Ridge
McDonough County">McDonough County, Illinois">McDonough County
- Adair
- Georgetown
McHenry County">McHenry County, Illinois">McHenry County
- Chemung
- Pistakee Highlands
McLean County">McLean County, Illinois">McLean County
- Twin Grove
Menard County">Menard County, Illinois">Menard County
- Lake Petersburg
Ogle County">Ogle County, Illinois">Ogle County
- Grand Detour
- Lost Nation
Piatt County">Piatt County, Illinois">Piatt County
- La Place
- White Heath
Peoria County">Peoria County, Illinois">Peoria County
- Lake Camelot
- Rome
Rock Island County">Rock Island County, Illinois">Rock Island County
- Coyne Center
- Rock Island Arsenal
Shelby County">Shelby County, Illinois">Shelby County
- Westervelt
St. Clair County">St. Clair County, Illinois">St. Clair County
- Darmstadt
- Floraville
- Paderborn
- Rentchler
- Scott Air Force Base
Stephenson County">Stephenson County, Illinois">Stephenson County
- Lake Summerset
Tazewell County">Tazewell County, Illinois">Tazewell County
- Heritage Lake
Vermilion County">Vermilion County, Illinois">Vermilion County
- Olivet
Whiteside County">Whiteside County, Illinois">Whiteside County
- Como
Will County">Will County, Illinois">Will County
- Crystal Lawns
- Fairmont
- Frankfort Square
- Ingalls Park
- Lakewood Shores
- Preston Heights
- Willowbrook
Williamson County">Williamson County, Illinois">Williamson County
- Crab Orchard
Winnebago County">Winnebago County, Illinois">Winnebago County
- Lake Summerset
Former CDPs
- Goodings Grove
- Wonder Lake