| Telephone directory of Rapid City, SD. 57701 | 352, 605, 612, 866, 877, 888 | 15146 | Rapid City |
| Telephone directory of Rapid City, SD. 57702 | 213, 605, 877, 888 | 14059 | Black Hawk, Box Elder, Rapid City, Rockerville, Silver City, Sturgis |
| Telephone directory of Rapid City, SD. 57703 | 605, 888 | 4237 | Rapid City |
| Telephone directory of North Sioux City, SD. 57049 | 402, 605, 712, 800 | 2643 | Dakota Du, Dakota Dunes, McCook Lake, N Sioux City, North Sioux City |
| Telephone directory of Lead, SD. 57754 | 605 | 1839 | Central City, Kennebec, Lead, Troy |
| Telephone directory of Hill City, SD. 57745 | 605, 815, 877 | 1021 | Hill City, Mystic, Rochford |
| Telephone directory of Big Stone City, SD. 57216 | 541, 605 | 514 | Big Stone City, Big Stone Cty, Marshall |
| Telephone directory of Keystone, SD. 57751 | 605, 800 | 417 | Hermosa, Hill City, Keystone |
| Telephone directory of Lake City, SD. 57247 | 605 | 303 | Lake City |
| Telephone directory of Prairie City, SD. 57649 | 605 | 227 | Prairie City, Sorum |
| Telephone directory of Rapid City, SD. 57709 | 307, 605 | 209 | Rapid City |
| Telephone directory of Mound City, SD. 57646 | 605 | 195 | Mound City |
| Telephone directory of Claire City, SD. 57224 | 605 | 108 | Claire City |
| Telephone directory of Garden City, SD. 57236 | 605 | 105 | Garden City |