List of census-designated places in Illinois

This is a list of census-designated places in the U.S. state of Illinois, by county. Census-designated places (CDPs) are unincorporated communities lacking elected municipal officers and boundaries with legal status. The term "census designated place" has been used as an official classification by the U.S. Census Bureau since 1980. Prior to that, select unincorporated communities were surveyed in the U.S. Census.

Adams County

 * Adams
 * Beverly
 * Bloomfield
 * Burton
 * Fall Creek
 * Fowler
 * Kingston
 * Marcelline
 * Meyer
 * Paloma
 * Richfield

Alexander County

 * Olive Branch
 * Unity

Boone County

 * Argyle
 * Candlewick Lake
 * Garden Prairie

Carroll County

 * Lake Carroll

Champaign County

 * Dewey
 * Lake of the Woods
 * Penfield
 * Seymour

Christian County

 * Langleyville

Clark County

 * West Union

Coles County

 * Janesville
 * Trilla

Crawford County

 * Annapolis
 * West York

Cumberland County

 * Janesville
 * Trilla

DeWitt County

 * Lane

Fayette County

 * La Clede

Franklin County

 * Mulkeytown

Hancock County

 * Niota

Henderson County

 * Carman

Henry County

 * Lynn Center
 * Nekoma
 * Ophiem
 * Osco

Jackson County

 * Harrison

Jasper County

 * West Liberty

Jefferson County

 * Opdyke

Jo Daviess County

 * Apple Canyon Lake
 * The Galena Territory

Kane County

 * Prestbury

Kendall County

 * Boulder Hill

Knox County

 * Gilson
 * Oak Run

Lake County

 * Channel Lake
 * Forest Lake
 * Fox Lake Hills
 * Gages Lake
 * Grandwood Park
 * Knollwood
 * Lake Catherine
 * Long Lake
 * Venetian Village

LaSalle County

 * Dayton
 * Harding
 * Lake Holiday
 * Serena
 * Triumph
 * Wedron

Lee County

 * Lee Center
 * Nachusa

Logan County

 * Beason
 * Chestnut
 * Cornland

Macon County

 * Boody
 * Elwin

Madison County

 * Holiday Shores
 * Mitchell
 * Moro
 * Prairietown
 * Rosewood Heights

Mason County

 * Goofy Ridge

McDonough County

 * Adair
 * Georgetown

McHenry County

 * Alden
 * Big Foot Prairie
 * Burtons Bridge
 * Chemung
 * Coral
 * Franklinville
 * Harmony
 * Hartland
 * Lawrence
 * Pistakee Highlands
 * Ridgefield
 * Riley
 * Solon Mills

McLean County

 * Shirley
 * Twin Grove

Menard County

 * Lake Petersburg

Mercer County

 * Cable
 * Eliza
 * Hamlet
 * Millersburg
 * Preemption
 * Swedona

Morgan County

 * Alexander
 * Literberry

Moultrie County

 * Lake City

Ogle County

 * Baileyville
 * Grand Detour
 * Holcomb
 * Kings
 * Lost Nation

Peoria County

 * Lake Camelot
 * Mossville
 * Rome
 * Smithville
 * Trivoli

Piatt County

 * La Place
 * White Heath

Richland County

 * Dundas

Rock Island County

 * Barstow
 * Buffalo Prairie
 * Campbell's Island
 * Coyne Center
 * Edgington
 * Illinois City
 * Joslin
 * Rock Island Arsenal
 * Taylor Ridge

Scott County

 * Merritt
 * Oxville
 * Riggston

Shelby County

 * Lakewood
 * Westervelt

St. Clair County

 * Darmstadt
 * Floraville
 * Paderborn
 * Rentchler
 * Scott Air Force Base

Stephenson County

 * Baileyville
 * Lake Summerset
 * Willow Lake

Tazewell County

 * Heritage Lake

Vermilion County

 * East Lynn
 * Olivet

Warren County

 * Cameron

Whiteside County

 * Como
 * Galt

Will County

 * Andres
 * Arbury Hills
 * Bonnie Brae
 * Crystal Lawns
 * Custer Park
 * Eagle Lake
 * Fairmont
 * Frankfort Square
 * Goodenow
 * Ingalls Park
 * Lakewood Shores
 * Lockport Heights
 * Lorenzo
 * Marley
 * Plum Valley
 * Preston Heights
 * Rest Haven
 * Ridgewood
 * Ritchie
 * Sunnyland
 * Willowbrook
 * Wilton Center

Williamson County

 * Crab Orchard
 * Whiteash

Winnebago County

 * Argyle
 * Lake Summerset
 * Westlake Village

Woodford County

 * Lowpoint

Former CDPs

 * Goodings Grove, incorporated in 2001 and renamed as village of Homer Glen
 * West Peoria, incorporated in 1993
 * Wonder Lake, annexed by village of Wonder Lake