South Dakota Area Codes
Data last updated: June 25, 2026
Area Codes in South Dakota
| NPA | Major Cities | Status | Exchanges | Overlay |
|---|---|---|---|---|
| 605 | Sioux Falls, Rapid City, Wall | Active | 786 | No |
Top Carriers in South Dakota
| Carrier | OCN | NXX Count |
|---|---|---|
| QWEST CORPORATION | 9631 | 104 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | 100 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 81 |
| MIDCONTINENT COMMUNICATIONS. - SD | 7076 | 34 |
| VENTURE COMMUNICATIONS COOPERATIVE | 1680 | 30 |
| INTERSTATE TELECOM COOP, INC. - SD | 1651 | 27 |
| GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM | 1659 | 27 |
| ONVOY, LLC - SD | 162G | 19 |
| VIVIAN TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS | 1686 | 19 |
| AERIAL COMMUNICATIONS, INC. | 6701 | 18 |