Places beginning with CH in Illinois, United States
- Chadwick
- Chalfin Bridge
- Challacombe
- Chalmers, Township of
- Chambersburg
- Chambersburg, Township of
- Chamness (historical)
- Champaign
- Champaign City, Township of
- Champaign County
- Champaign, Township of
- Champlin
- Chana
- Chandlerville
- Chandlerville, Township of
- Channahon
- Channahon, Township of
- Channel Lake
- Chapel Hill (subdivision)
- Chapin
- Chapin
- Chapin Election Precinct
- Chapman
- Charleston
- Charleston, Township of
- Charlotte
- Charlotte, Township of
- Charlottsville (historical)
- Charter Grove
- Chatham
- Chatham Fields (subdivision)
- Chatham (subdivision)
- Chatham, Township of
- Chatsworth
- Chatsworth, Township of
- Chatton
- Chauncey
- Chautauqua
- Chautauqua Park
- Chebanse
- Chebanse, Township of
- Checkrow
- Cheltenham (subdivision)
- Chemung
- Chemung, Township of
- Cheneys Grove, Township of
- Cheneyville
- Chenoa
- Chenoa, Township of
- Cherry
- Cherry Grove-Shannon, Township of
- Cherry Hill
- Cherry Hill Estates
- Cherry Lane Estates (subdivision)
- Cherry Point
- Cherry Valley
- Cherry Valley, Township of
- Cheshire Hills
- Chester
- Chester Election Precinct
- Chesterfield
- Chesterfield, Township of
- Chester Highlands (subdivision)
- Chester, Township of
- Chestervale
- Chesterville
- Chestline
- Chestnut
- Chestnut, Township of
- Cheyenne Heights (subdivision)
- Chicago
- Chicago, City of
- Chicago, City of
- Chicago Heights
- Chicago Lawn (subdivision)
- Chicago Ridge
- Chicken Bristle
- Childers Acres
- Chili
- Chili, Township of
- Chillicothe
- Chillicothe, Township of
- Chinatown
- Chinatown
- China, Township of
- Chippewa
- Chipps
- Chittenden (subdivision)
- Chittyville
- Choat
- Choctaw
- Chouteau, Township of
- Chrisman
- Christian County
- Christopher
- Christy, Township of
- Churchill
- Churchville