South Dakota area codes
South Dakota has 1 area code: 605.
Area codes by city in South Dakota
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.
South Dakota has 1 area code: 605.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.