Area codes in Sioux City, Iowa
Sioux City, Iowa uses area code 712. The main Sioux City area code is 712.
Area codes serving Sioux City
All Iowa area codes · Is a Sioux City call a scam?
Nearby cities
- Sioux Falls area codes
- Omaha area codes
- Council Bluffs area codes
- Lincoln area codes
- Ames area codes
- Des Moines area codes
- Bloomington area codes
- Plymouth area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.