- Cabool
- Cainsville
- Cairo
- Caledonia
- Calhoun
- California
- Callao
- Calverton Park
- Camden
- Camden Point
- Camdenton
- Cameron
- Campbell
- Canalou
- Canton
- Cape Girardeau
- Cardwell
- Carl Junction
- Carrollton
- Carterville
- Carthage
- Caruthersville
- Carytown
- Cassville
- Castle Point
- Catron
- Cave
- Cedar Hill
- Cedar Hill Lakes
- Center
- Centertown
- Centerview
- Centerville
- Centralia
- Chaffee
- Chain of Rocks
- Chain-O-Lakes
- Chamois
- Champ
- Charlack
- Charleston
- Charmwood
- Cherokee Pass
- Chesapeake
- Chesterfield
- Chilhowee
- Chillicothe
- Chula
- City of Saint Peters
- Clarence
- Clark
- Clarksburg
- Clarksdale
- Clarkson Valley
- Clarksville
- Clarkton
- Claycomo
- Clayton
- Clearmont
- Cleveland
- Clever
- Cliff Village
- Clifton Hill
- Climax Springs
- Clinton
- Clyde
- Cobalt Village
- Coffey
- Cole Camp
- Collins
- Columbia
- Commerce
- Conception
- Conception Junction
- Concord
- Concordia
- Coney Island
- Conway
- Cool Valley
- Cooter
- Corder
- Corning
- Cosby
- Cottleville
- Country Club Hills
- Country Club Village
- Country Life Acres
- Cowgill
- Craig
- Crane
- Creighton
- Crestwood
- Creve Coeur
- Crocker
- Cross Timbers
- Crystal City
- Crystal Lake Park
- Crystal Lakes
- Cuba
- Curryville
