| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Cactus Flat | city | South Dakota | United States | 43.83556 | -101.89389 | 2493 | 75 |
| Cactus Heights | city | South Dakota | United States | 43.56028 | -96.66694 | 1502 | 59464 |
| Camp Crook | city | South Dakota | United States | 45.55028 | -103.97417 | 3106 | 19 |
| Canistota | city | South Dakota | United States | 43.59778 | -97.29028 | 1574 | 378 |
| Canning | city | South Dakota | United States | 44.39639 | -100.03167 | 1545 | 102 |
| Canova | city | South Dakota | United States | 43.88111 | -97.50417 | 1519 | 353 |
| Canton | city | South Dakota | United States | 43.30083 | -96.5925 | 1230 | 3087 |
| Canyon City historical | city | South Dakota | United States | 44.085 | -103.60528 | 4996 | 284 |
| Capa | city | South Dakota | United States | 44.10889 | -100.97778 | 1758 | 56 |
| Caputa | city | South Dakota | United States | 43.99389 | -102.98167 | 2995 | 84 |
| Carbonate historical | city | South Dakota | United States | 44.4 | -103.86806 | 5603 | 3075 |
| Carlock | city | South Dakota | United States | 43.08194 | -99.43444 | 2247 | 182 |
| Carlton historical | city | South Dakota | United States | 44.72222 | -97.825 | 1574 | 145 |
| Carpenter | city | South Dakota | United States | 44.6375 | -97.91639 | 1440 | 149 |
| Carter | city | South Dakota | United States | 43.38722 | -100.20222 | 2201 | 88 |
| Carterville historical | city | South Dakota | United States | 44.3375 | -103.74583 | 5229 | 1118 |
| Cartesville historical | city | South Dakota | United States | 44.33944 | -103.75694 | 5515 | 1991 |
| Carthage | city | South Dakota | United States | 44.17111 | -97.71611 | 1410 | 175 |
| Carthage historical | city | South Dakota | United States | 44.33056 | -103.80833 | 5626 | 2410 |
| Carwye historical | city | South Dakota | United States | 44.22222 | -103.42083 | 4297 | 597 |
| Cascade Springs | city | South Dakota | United States | 43.33333 | -103.55 | 3599 | 61 |
| Castle Rock | city | South Dakota | United States | 44.96444 | -103.42389 | 3149 | 56 |
| Castleton historical | city | South Dakota | United States | 44.06528 | -103.65556 | 4999 | 313 |
| Castlewood | city | South Dakota | United States | 44.72278 | -97.02972 | 1692 | 518 |
| Cavour | city | South Dakota | United States | 44.37 | -98.0375 | 1305 | 159 |
| Cedar Butte | city | South Dakota | United States | 43.57694 | -101.01806 | 2385 | 61 |
| Cedar Canyon | city | South Dakota | United States | 45.02361 | -102.69 | 2995 | 43 |
| Cedar Grove Colony | city | South Dakota | United States | 43.53028 | -98.8075 | 1597 | 180 |
| Centennial City historical | city | South Dakota | United States | 44.43472 | -103.63472 | 4399 | 929 |
| Centerville | city | South Dakota | United States | 43.11944 | -96.96111 | 1240 | 501 |
| Central City | city | South Dakota | United States | 44.36583 | -103.77194 | 5295 | 1991 |
| Chamberlain | city | South Dakota | United States | 43.81083 | -99.33028 | 1466 | 2025 |
| Chance | city | South Dakota | United States | 45.41 | -102.28083 | 2529 | 56 |
| Chancellor | city | South Dakota | United States | 43.37222 | -96.98667 | 1361 | 665 |
| Channing historical | city | South Dakota | United States | 44.24167 | -103.51667 | 5055 | 292 |
| Chase | city | South Dakota | United States | 44.94111 | -101.62806 | 2401 | 47 |
| Chautauqua | city | South Dakota | United States | 43.98028 | -97.05972 | 1601 | 4008 |
| Chelsea | city | South Dakota | United States | 45.16861 | -98.73917 | 1348 | 120 |
| Cherry Creek | city | South Dakota | United States | 44.60556 | -101.49944 | 1774 | 52 |
| Chester | city | South Dakota | United States | 43.895 | -96.92611 | 1581 | 495 |
| Cheyenne Crossing | city | South Dakota | United States | 44.29611 | -103.86889 | 5597 | 2622 |
| Chinatown subdivision | city | South Dakota | United States | 44.37917 | -103.72083 | 4904 | 1159 |
| Claire City | city | South Dakota | United States | 45.85722 | -97.10333 | 1190 | 224 |
| Clara Belle Camp historical | city | South Dakota | United States | 43.86389 | -103.59583 | 5600 | 1215 |
| Claremont | city | South Dakota | United States | 45.67194 | -98.01528 | 1302 | 181 |
| Clark | city | South Dakota | United States | 44.87778 | -97.73278 | 1797 | 221 |
| Clark Colony | city | South Dakota | United States | 44.78944 | -97.98 | 1407 | 158 |
| Clarkson Addition | city | South Dakota | United States | 44.00861 | -103.32639 | 4133 | 12070 |
| Clay Point | city | South Dakota | United States | 42.90972 | -96.90278 | 1200 | 336 |
| Clayton | city | South Dakota | United States | 43.44361 | -97.6575 | 1318 | 461 |
| Clear Lake | city | South Dakota | United States | 44.74583 | -96.68222 | 1748 | 1301 |
| Clearfield | city | South Dakota | United States | 43.16833 | -100.02778 | 2299 | 75 |
| Clough | city | South Dakota | United States | 44.57917 | -102.80417 | 2772 | 33 |
| Cloverleaf Colony | city | South Dakota | United States | 44.1825 | -97.53667 | 1646 | 321 |
| Coal Springs | city | South Dakota | United States | 45.44167 | -102.10722 | 2598 | 56 |
| Cold Spring II historical | city | South Dakota | United States | 43.62222 | -103.50472 | 4724 | 112 |
| Colfax Corner | city | South Dakota | United States | 43.01111 | -97.02194 | 1217 | 336 |
| Colman | city | South Dakota | United States | 43.9825 | -96.81417 | 1689 | 327 |
| Colome | city | South Dakota | United States | 43.26056 | -99.71472 | 2299 | 75 |
| Colonial Pine Hills | city | South Dakota | United States | 44.00778 | -103.315 | 3999 | 12070 |
| Colton | city | South Dakota | United States | 43.78611 | -96.92722 | 1601 | 565 |
| Columbia | city | South Dakota | United States | 45.61306 | -98.31222 | 1299 | 164 |
| Conata | city | South Dakota | United States | 43.72861 | -102.18833 | 2486 | 105 |
| Conde | city | South Dakota | United States | 45.15722 | -98.09722 | 1345 | 84 |
| Copper Camp historical | city | South Dakota | United States | 44.09167 | -103.79861 | 5797 | 285 |
| Corn Creek | city | South Dakota | United States | 43.565 | -101.20056 | 2401 | 61 |
| Corona | city | South Dakota | United States | 45.33389 | -96.76278 | 1184 | 581 |
| Corsica | city | South Dakota | United States | 43.42528 | -98.40694 | 1551 | 354 |
| Corson | city | South Dakota | United States | 43.61639 | -96.57139 | 1338 | 2493 |
| Cottonwood | city | South Dakota | United States | 43.96694 | -101.90556 | 2424 | 67 |
| Council House | city | South Dakota | United States | 44.07778 | -99.58861 | 1528 | 99 |
| Country Acres | city | South Dakota | United States | 43.50056 | -96.88917 | 1512 | 1757 |
| Country Estates Subdivision | city | South Dakota | United States | 43.51528 | -96.92917 | 1558 | 1290 |
| Country Gables Subdivision | city | South Dakota | United States | 43.58056 | -96.61222 | 1276 | 6881 |
| Country Village Mobile Park | city | South Dakota | United States | 45.51056 | -98.525 | 1325 | 7001 |
| Crandall | city | South Dakota | United States | 45.15528 | -97.95528 | 1509 | 183 |
| Crandon | city | South Dakota | United States | 44.77472 | -98.45778 | 1299 | 151 |
| Craven | city | South Dakota | United States | 45.44222 | -98.92472 | 1482 | 173 |
| Craven Corner | city | South Dakota | United States | 45.44778 | -98.92556 | 1486 | 173 |
| Creighton | city | South Dakota | United States | 44.255 | -102.2075 | 2700 | 84 |
| Cresbard | city | South Dakota | United States | 45.17 | -98.94806 | 1450 | 110 |
| Creston | city | South Dakota | United States | 43.91056 | -102.69833 | 2611 | 86 |
| Crocker | city | South Dakota | United States | 45.10528 | -97.78444 | 1774 | 230 |
| Crook City | city | South Dakota | United States | 44.44139 | -103.63306 | 3963 | 929 |
| Crooks | city | South Dakota | United States | 43.66472 | -96.81056 | 1597 | 2073 |
| Crow Creek | city | South Dakota | United States | 43.95556 | -99.22278 | 1479 | 152 |
| Crow Lake | city | South Dakota | United States | 43.9575 | -98.73861 | 1732 | 157 |
| Custer | city | South Dakota | United States | 43.76667 | -103.59833 | 5400 | 2043 |
| Cuthbert | city | South Dakota | United States | 43.96778 | -98.22361 | 1302 | 274 |