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 code | Main places served |
|---|---|
| 605 | Sioux 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
| City | Area codes |
|---|---|
| Sioux Falls | 605 |
| Rapid City | 605 |
| Aberdeen | 605 |
| Agar | 605 |
| Alcester | 605 |
| Alexandria | 605 |
| Allen | 605 |
| Alpena | 605 |
| Amherst | 605 |
| Andover | 605 |
| Arlington | 605 |
| Armour | 605 |
| Artesian | 605 |
| Ashton | 605 |
| Pierre | 605 |
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