| General Information about Area Code 605 | |
|---|---|
| Country | United States |
| State / Province / Territory | South Dakota |
| Major City | Sioux Falls |
| Time Zone | Central (UTC-06:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 605-255 | Hermosa | Custer | Landline |
| 605-456 | Newell | Butte | Landline |
| 605-443 | Whitewood | Lawrence | Landline |
| 605-461 | Huron | Beadle | Wireless |
| 605-460 | Redfield | Spink | Wireless |
| 605-781 | Kyle | Oglala Lakota | Landline |
| 605-526 | Tea | Lincoln | Landline |
| 605-414 | Castlewood | Hamlin | Landline |
| 605-821 | Dupree | Ziebach | Wireless |
| 605-653 | Yankton | Yankton | Wireless |
| 605-995 | Mitchell | Davison | Landline |
| 605-535 | Oelrichs | Fall River | Landline |
| 605-564 | Lodgepole | Perkins | Landline |
| 605-469 | Lake Andes | Charles Mix | Wireless |
| 605-949 | Milbank | Grant | Wireless |
| 605-394 | Rapid City | Pennington | Landline |
| 605-792 | Hayti | Hamlin | Landline |
| 605-765 | Gettysburg | Potter | Landline |
| 605-938 | Wilmot | Roberts | Landline |
| 605-380 | Aberdeen | Brown | Wireless |