South Dakota Area Codes: Complete List With Cities Served

South Dakota is served by 1 area code. Because the whole state shares 605, it is one of the simplest numbering setups in the country.

South Dakota area code list

Area codeMain places served
605Sioux Falls, Rapid City, Brookings and Chamberlain

Place names come from ZIP code records linked to each area code, so they show where a code is most common rather than exact boundaries.

Area codes by major city

How to format a South Dakota phone number

US numbers have ten digits: the area code, a three-digit exchange and a four-digit line number. A South Dakota number is written as (605) 555-0123 for display, or +16055550123 in E.164 format for storage.

Safe numbers for testing

The range 555-0100 to 555-0199 is reserved for fictional use in every area code. Our generator combines these with real local area codes, so test data looks right without reaching a real person.

Create realistic South Dakota addresses for testing, with real cities, counties and ZIP codes.

Generate South Dakota addresses