| Area Code | Ratecenter | Tier |
|---|---|---|
| 605 | ABERDEEN | 3 |
| 605 | ARLINGTON | 3 |
| 605 | BELLEFORCH | 3 |
| 605 | CANTON | 3 |
| 605 | CAVOUR | 3 |
| 605 | CHAMBERLAN | 3 |
| 605 | DE SMET | 3 |
| 605 | ELK POINT | 3 |
| 605 | FLANDREAU | 3 |
| 605 | HARISBGTEA | 3 |
| 605 | HILL CITY | 3 |
| 605 | HURON | 3 |
| 605 | IROQUOIS | 3 |
| 605 | LK PRESTON | 3 |
| 605 | MADISON | 3 |
| 605 | MCINTOSH | 3 |
| 605 | MILBANK | 3 |
| 605 | MILLER | 3 |
| 605 | MITCHELL | 3 |
| 605 | NOSIOUX CY | 3 |
| 605 | PIERRE | 3 |
| 605 | RAPID CITY | 2 |
| 605 | REDFIELD | 3 |
| 605 | SIOUX FLS | 2 |
| 605 | SPEARFISH | 3 |
| 605 | STURGIS | 3 |
| 605 | TIMBERLAKE | 3 |
| 605 | VERMILLION | 3 |
| 605 | VOLGA | 3 |
| 605 | WATERTOWN | 3 |
| 605 | YANKTON | 3 |