C
| Community | County | Comments | |
| Cade | Bryan | ||
| Cairo | Coal | 34°35′26″N 96°07′55″W / 34.59056°N 96.13194°W / 34.59056; -96.13194 | |
| Calhoun | Le Flore | ||
| Calida | Pawnee | 36°11′35″N 96°17′53″W / 36.19306°N 96.29806°W / 36.19306; -96.29806 | |
| † | Cambria | Latimer | |
| Cambridge | Kiowa | 35°04′22″N 99°12′19″W / 35.07278°N 99.20528°W / 35.07278; -99.20528 | |
| Camp Houston | Woods | ||
| Canadian Shores | Pittsburg | ||
| Caney Ridge | Cherokee | ||
| Capitol Hill | Oklahoma | (Incorporated as part of Oklahoma City. | |
| Cardin | Ottawa | ||
| Carlton | Blaine | 36°00′52″N 98°30′55″W / 36.01444°N 98.51528°W / 36.01444; -98.51528 (Also spelled Carleton.) |
|
| Carpenter | Roger Mills | ||
| Carson | Hughes | ||
| Carters Corner | McIntosh | ||
| Carters Landing | Cherokee | ||
| Cartersville | Haskell | ||
| Cartwright | Bryan | ||
| Casey | Pawnee | 36°16′57″N 96°40′27″W / 36.2825°N 96.67417°W / 36.2825; -96.67417 | |
| Castaneda | Cimarron | 36°52′52″N 102°31′17″W / 36.88111°N 102.52139°W / 36.88111; -102.52139 | |
| Catale | Rogers | 36°33′39″N 95°22′19″W / 36.56083°N 95.37194°W / 36.56083; -95.37194 (Railroad siding–PO closed in 1933.) |
|
| Catesby | Ellis | ||
| Cayuga | Delaware | ||
| Cedar Crest | Mayes | ||
| † | Cedar Lake | Canadian | |
| Center | Pontotoc | ||
| † | Center City | Oklahoma | |
| † | Center Point | Atoka | |
| Centerview | Pottawatomie | ||
| Centralia | Craig | ||
| Ceres | Noble | ||
| ‡ | Cerrogordo | McCurtain | (PO closed in 1958.) |
| Cestos | Dewey | ||
| Chance | Adair | ||
| Charleston | Harper | (See abandoned communities-USGS.) | |
| Chase | Muskogee | (See Beland.) | |
| Cherry Tree | Adair | ||
| Chester | Major | ||
| Chewey | Adair | ||
| Cheyenne Valley | Major | ||
| Chigley | Murray | ||
| Childers | Nowata | ||
| Chilli | Latimer | ||
| Chilocco | Kay | (See Chilocco Indian School.) | |
| † | Chisney | Pottawatomie | |
| Chitwood | Grady | ||
| Chloeta | Delaware | ||
| Chockie | Atoka | ||
| Choska | Wagoner | ||
| Christie | Adair | ||
| Cimarron City | Logan | ||
| ‡ | Cisco | McCurtain | (PO closed in 1916.) |
| Citra | Hughes | ||
| Clarita | Coal | ||
| Clarksville | Wagoner | ||
| Clayton Lake | Pushmataha | (Reservoir-Clayton Lake (Oklahoma)-USGS) | |
| ‡ | Clear Lake | Beaver | (PO closed in 1944.) |
| Clebit | McCurtain | ||
| Clemscot | Carter | ||
| Cleora | Delaware | ||
| Clothier | Cleveland | ||
| Cloud Chief | Washita | ||
| Cloudy | Pushmataha | ||
| Clyde | Grant | ||
| Coalton | Okmulgee | ||
| Cobb | Bryan | ||
| Cogar | Caddo | ||
| Coleman | Johnston | ||
| Concho | Canadian | ||
| Connerville | Johnston | ||
| Conrad | Cimarron | (Railroad siding and switch.) | |
| Conser | Le Flore | ||
| Cookietown | Cotton | ||
| Cookson | Cherokee | ||
| Copeland | Delaware | ||
| Corbett | Cleveland | ||
| Corinne | Pushmataha | ||
| Corum | Stephens | ||
| Cottonwood | Coal | ||
| Council | Oklahoma | (See Council Grove.) | |
| Countyline | Stephens/ Carter | ||
| Courtney | Love | ||
| Cove Acres | Comanche | ||
| ‡ | Cowden | Washita | 35°14′52″N 98°42′43″W / 35.24778°N 98.71194°W / 35.24778; -98.71194 (PO closed in 1908.) |
| Cox City | Grady | ||
| Craig | McCurtain | 34°02′18″N 94°37′44″W / 34.03833°N 94.62889°W / 34.03833; -94.62889 | |
| Craig | Pittsburg | 34°50′25″N 95°37′39″W / 34.84028°N 95.6275°W / 34.84028; -95.6275 | |
| ‡ | Cravens | Latimer | (PO closed 1916.) |
| Crawford | Roger Mills | ||
| Crekola | Muskogee | ||
| † | Creosote | Choctaw | |
| Creta | Jackson | 34°31′00″N 99°32′59″W / 34.5166667°N 99.54972°W / 34.5166667; -99.54972 | |
| Criner | McClain | ||
| Crusher | Murray | ||
| Crutcho | Oklahoma | ||
| Crystal | Atoka | ||
| Crystal Lakes | Major | ||
| Cumberland | Marshall | ||
| Curchece | Pawnee | ||
| Curtis | Woodward | ||
| † Geographic or historic reference undetermined. | |||
| ‡ Identified as abandoned by at least one source. | |||
Read more about this topic: List Of Unincorporated Communities In Oklahoma