| 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 |
|---|---|---|---|
| 605-412 | Huron | Beadle | Wireless |
| 605-540 | Jefferson | Union | Landline |
| 605-823 | Mc Laughlin | Corson | Landline |
| 605-389 | Rapid City | Pennington | Wireless |
| 605-577 | Eureka | Mcpherson | Landline |
| 605-845 | Mobridge | Walworth | Landline |
| 605-646 | Rapid City | Pennington | Landline |
| 605-485 | Canova | Miner | Landline |
| 605-826 | Volga | Brookings | Landline |
| 605-925 | Freeman | Hutchinson | Landline |
| 605-515 | Quinn | Pennington | Wireless |
| 605-789 | Sioux Falls | Minnehaha | Wireless |
| 605-538 | Dupree | Ziebach | Landline |
| 605-675 | Vermillion | Clay | Wireless |
| 605-326 | Viborg | Turner | Landline |
| 605-842 | Winner | Tripp | Landline |
| 605-881 | Castlewood | Hamlin | Wireless |
| 605-690 | Brookings | Brookings | Wireless |
| 605-278 | Ludlow | Harding | Landline |
| 605-322 | Sioux Falls | Minnehaha | Landline |