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

• 605 — Sioux Falls

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

Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.