South Dakota Area Codes

1 area codes in South Dakota, United States. Country code: +1. Find area codes by city and region.

All South Dakota Area Codes

Area Code	Major Cities	Region
605	Sioux Falls, Rapid City	Statewide

About South Dakota Area Codes

South Dakota uses 1 area codes under the North American Numbering Plan (NANP). When calling within South Dakota, dial the 3-digit area code followed by the 7-digit phone number. From abroad: exit code + 1 + area code + number.