Chesterland (835)
Chesterville (27)
Cheviot (2)
Chickasaw (13)
Chillicothe (2,773)
Chilo (3)
Chippewa Lake (49)
Christiansburg (18)
Cincinnati (72,472)
Cincinnati Airport Annex (1)
Circleville (1,365)
Clarington (64)
Clarksburg (38)
Clarksville (127)
Clay Center (9)
Clayton (286)
Cleveland (87,325)
Cleveland Heights (482)
Cleves (578)
Clifton (6)
Clinton (324)
Cloverdale (83)
Clyde (405)
Coal Grove (42)
Coal Run (4)
Coalton (14)
Coldwater (331)
Colerain (12)
Colerain Township (1)
College Corner (50)
Collins (57)
Collinsville (3)
Columbia (1)
Columbia Sta (1)
Columbia Station (489)
Columbiana (647)
Columbus (69,782)
Columbus Grove (252)
Columbus Grv (1)
Commercial Point (25)
Concord Township (1)
Concord Twp. (1)
Conesville (36)
Conneaut (620)
Conover (41)
Continental (126)
Convoy (101)
Coolville (134)
Copley (644)
Corning (70)
Cortland (801)
Coshocton (1,099)
Covington (292)
Creola (22)
Crestline (293)
Creston (151)
Cridersville (127)
Crooksville (176)
Croton (64)
Crown City (80)
Cuba (4)
Cumberland (81)
Curtice (164)
Custar (37)
Cutler (40)
Cuyahoga Falls (2,449)
Cuyahoga Heights (1)
Cygnet (48)
Cynthiana (6)
Dalton (309)
Damascus (22)
Danville (178)
Day Heights (3)
Dayton (36,922)
De Graff (123)
Decatur (4)
Deer Park (4)
Deerfield (86)
Deersville (6)
Defiance (1,565)
Delaware (2,197)
Dellroy (57)
Delphos (519)
Delta (353)
Dennison (149)
Derby (6)
Derwent (8)
Deshler (128)
Dexter City (18)
Diamond (102)
Dillonvale (96)
Dola (17)
Donnelsville (19)
Dorset (64)
Dover (1,087)
Doylestown (357)
Dresden (226)
Dublin (6,463)
Dunbridge (7)
Duncan Falls (49)
