| 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 |
|---|---|---|---|
| 605-655 | Yankton | Yankton | Landline |
| 605-994 | Hecla | Brown | Landline |
| 605-375 | Buffalo | Harding | Landline |
| 605-867 | Pine Ridge | Oglala Lakota | Landline |
| 605-939 | Rapid City | Pennington | Landline |
| 605-710 | Lake Norden | Hamlin | Landline |
| 605-743 | Harrisburg | Lincoln | Landline |
| 605-369 | Springfield | Bon Homme | Landline |
| 605-300 | Beresford | Union | Wireless |
| 605-633 | Flandreau | Moody | Wireless |
| 605-546 | Iroquois | Kingsbury | Landline |
| 605-886 | Watertown | Codington | Landline |
| 605-676 | Stockholm | Grant | Landline |
| 605-894 | Pukwana | Brule | Landline |
| 605-227 | Ethan | Davison | Landline |
| 605-733 | Ridgeview | Dewey | Landline |
| 605-739 | Faith | Meade | Landline |
| 605-352 | Huron | Beadle | Landline |
| 605-863 | Rapid City | Pennington | Wireless |
| 605-424 | Oral | Fall River | Landline |