Area codes in Sioux Falls, South Dakota
Sioux Falls, South Dakota uses area code 605. The main Sioux Falls area code is 605.
Area codes serving Sioux Falls
Phone numbers in Sioux Falls are written as ten digits — for example (605) 555-0190 — and fall in the Central & Mountain Time zone.
All South Dakota area codes · Is a Sioux Falls call a scam?
Nearby cities
- Sioux City area codes
- Omaha area codes
- Council Bluffs area codes
- Lincoln area codes
- Ames area codes
- St Cloud area codes
- Plymouth area codes
- Bloomington area codes
More cities in South Dakota
Frequently asked questions
What is the area code for Sioux Falls?
The main area code for Sioux Falls, South Dakota is 605.
How many area codes does Sioux Falls have?
Sioux Falls has 1 area code: 605.
How do you dial a Sioux Falls number?
Dial all 10 digits — the area code (605) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.