| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cactus Flat | city | South Dakota | United States | 43.84 | -101.89 | 2509 | |
| Cactus Heights | city | South Dakota | United States | 43.56 | -96.67 | 1669 | |
| Cameron Colony | city | South Dakota | United States | 43.19 | -97.26 | 1669 | |
| Camp Crook | city | South Dakota | United States | 45.55 | -103.97 | 3349 | |
| Camrose Colony | city | South Dakota | United States | 44.93 | -98.22 | 1669 | |
| Canistota | city | South Dakota | United States | 43.60 | -97.29 | 1669 | |
| Canning | city | South Dakota | United States | 44.40 | -100.03 | 1669 | |
| Canova | city | South Dakota | United States | 43.88 | -97.50 | 1669 | |
| Canton | city | South Dakota | United States | 43.30 | -96.59 | 1230 | |
| Canyon City (historical) | city | South Dakota | United States | 44.08 | -103.61 | 5029 | |
| Capa | city | South Dakota | United States | 44.11 | -100.98 | 1758 | |
| Caputa | city | South Dakota | United States | 43.99 | -102.98 | 3349 | |
| Carbonate (historical) | city | South Dakota | United States | 44.40 | -103.87 | 5869 | |
| Carlock | city | South Dakota | United States | 43.08 | -99.43 | 2509 | |
| Carlton (historical) | city | South Dakota | United States | 44.72 | -97.83 | 1669 | |
| Carpenter | city | South Dakota | United States | 44.64 | -97.92 | 1669 | |
| Carter | city | South Dakota | United States | 43.39 | -100.20 | 2509 | |
| Carterville (historical) | city | South Dakota | United States | 44.34 | -103.75 | 5869 | |
| Cartesville (historical) | city | South Dakota | United States | 44.34 | -103.76 | 5869 | |
| Carthage | city | South Dakota | United States | 44.17 | -97.72 | 1669 | |
| Carthage (historical) | city | South Dakota | United States | 44.33 | -103.81 | 5869 | |
| Carwye (historical) | city | South Dakota | United States | 44.22 | -103.42 | 4455 | |
| Cascade Springs | city | South Dakota | United States | 43.33 | -103.55 | 3599 | |
| Castle Rock | city | South Dakota | United States | 44.96 | -103.42 | 3349 | |
| Castleton (historical) | city | South Dakota | United States | 44.07 | -103.66 | 5029 | |
| Castlewood | city | South Dakota | United States | 44.72 | -97.03 | 1692 | |
| Cavour | city | South Dakota | United States | 44.37 | -98.04 | 1669 | |
| Cedar Butte | city | South Dakota | United States | 43.58 | -101.02 | 2509 | |
| Cedar Canyon | city | South Dakota | United States | 45.02 | -102.69 | 3349 | |
| Cedar Grove Colony | city | South Dakota | United States | 43.53 | -98.81 | 1669 | |
| Centennial City (historical) | city | South Dakota | United States | 44.43 | -103.64 | 4399 | |
| Centerville | city | South Dakota | United States | 43.12 | -96.96 | 1240 | |
| Central City | city | South Dakota | United States | 44.37 | -103.77 | 5295 | |
| Chamberlain | city | South Dakota | United States | 43.81 | -99.33 | 1669 | |
| Chance | city | South Dakota | United States | 45.41 | -102.28 | 2529 | |
| Chancellor | city | South Dakota | United States | 43.37 | -96.99 | 1669 | |
| Channing (historical) | city | South Dakota | United States | 44.24 | -103.52 | 5055 | |
| Chase | city | South Dakota | United States | 44.94 | -101.63 | 2509 | |
| Chautauqua | city | South Dakota | United States | 43.98 | -97.06 | 1669 | |
| Chelsea | city | South Dakota | United States | 45.17 | -98.74 | 1669 | |
| Cherry Creek | city | South Dakota | United States | 44.61 | -101.50 | 1774 | |
| Chester | city | South Dakota | United States | 43.89 | -96.93 | 1669 | |
| Cheyenne Crossing | city | South Dakota | United States | 44.30 | -103.87 | 5869 | |
| Chinatown | city | South Dakota | United States | 44.38 | -103.72 | 5029 | |
| Claire City | city | South Dakota | United States | 45.86 | -97.10 | 1190 | |
| Clara Belle Camp (historical) | city | South Dakota | United States | 43.86 | -103.60 | 5869 | |
| Claremont | city | South Dakota | United States | 45.67 | -98.02 | 1669 | |
| Claremont Colony | city | South Dakota | United States | 44.71 | -96.95 | 1748 | |
| Clark | city | South Dakota | United States | 44.88 | -97.73 | 1797 | |
| Clark Colony | city | South Dakota | United States | 44.79 | -97.98 | 1669 | |
| Clarkson Addition | city | South Dakota | United States | 44.01 | -103.33 | 4189 | |
| Clay Point | city | South Dakota | United States | 42.91 | -96.90 | 1200 | |
| Clayton | city | South Dakota | United States | 43.44 | -97.66 | 1669 | |
| Clear Lake | city | South Dakota | United States | 44.75 | -96.68 | 1748 | |
| Clearfield | city | South Dakota | United States | 43.17 | -100.03 | 2509 | |
| Clearfield Colony | city | South Dakota | United States | 43.14 | -98.14 | 1748 | |
| Clough | city | South Dakota | United States | 44.58 | -102.80 | 2752 | |
| Cloverleaf Colony | city | South Dakota | United States | 44.18 | -97.54 | 1669 | |
| Coal Springs | city | South Dakota | United States | 45.44 | -102.11 | 2598 | |
| Cold Spring II (historical) | city | South Dakota | United States | 43.62 | -103.51 | 5029 | |
| Colfax Corner | city | South Dakota | United States | 43.01 | -97.02 | 1217 | |
| Collins Colony | city | South Dakota | United States | 44.55 | -97.70 | 1699 | |
| Colman | city | South Dakota | United States | 43.98 | -96.81 | 1689 | |
| Colome | city | South Dakota | United States | 43.26 | -99.72 | 2509 | |
| Colonial Pine Hills | city | South Dakota | United States | 44.01 | -103.32 | 4189 | |
| Colton | city | South Dakota | United States | 43.79 | -96.93 | 1669 | |
| Columbia | city | South Dakota | United States | 45.61 | -98.31 | 1669 | |
| Conata | city | South Dakota | United States | 43.73 | -102.19 | 2509 | |
| Conde | city | South Dakota | United States | 45.16 | -98.10 | 1669 | |
| Copper Camp (historical) | city | South Dakota | United States | 44.09 | -103.80 | 5869 | |
| Corn Creek | city | South Dakota | United States | 43.56 | -101.20 | 2509 | |
| Corona | city | South Dakota | United States | 45.33 | -96.76 | 1184 | |
| Corsica | city | South Dakota | United States | 43.43 | -98.41 | 1669 | |
| Corson | city | South Dakota | United States | 43.62 | -96.57 | 1669 | |
| Cottonwood | city | South Dakota | United States | 43.97 | -101.91 | 2509 | |
| Council House | city | South Dakota | United States | 44.08 | -99.59 | 1669 | |
| Country Acres | city | South Dakota | United States | 43.50 | -96.89 | 1669 | |
| Country Estates Subdivision | city | South Dakota | United States | 43.52 | -96.93 | 1669 | |
| Country Gables Subdivision | city | South Dakota | United States | 43.58 | -96.61 | 1669 | |
| Country Village Mobile Park | city | South Dakota | United States | 45.51 | -98.53 | 1669 | |
| Crandall | city | South Dakota | United States | 45.16 | -97.96 | 1669 | |
| Crandon | city | South Dakota | United States | 44.77 | -98.46 | 1669 | |
| Craven | city | South Dakota | United States | 45.44 | -98.93 | 1669 | |
| Craven Corner | city | South Dakota | United States | 45.45 | -98.93 | 1669 | |
| Creighton | city | South Dakota | United States | 44.25 | -102.21 | 2700 | |
| Cresbard | city | South Dakota | United States | 45.17 | -98.95 | 1669 | |
| Creston | city | South Dakota | United States | 43.91 | -102.70 | 2611 | |
| Crocker | city | South Dakota | United States | 45.11 | -97.78 | 1774 | |
| Crook City | city | South Dakota | United States | 44.44 | -103.63 | 4189 | |
| Crooks | city | South Dakota | United States | 43.66 | -96.81 | 1669 | |
| Crow Creek | city | South Dakota | United States | 43.96 | -99.22 | 1669 | |
| Crow Lake | city | South Dakota | United States | 43.96 | -98.74 | 1732 | |
| Custer | city | South Dakota | United States | 43.77 | -103.60 | 5400 | |
| Cuthbert | city | South Dakota | United States | 43.97 | -98.22 | 1669 |