Area code 605
Get a 605 phone number
To get a 605 phone number, pick an available 605 number below and sign up for AvoCall. Your new number works for calls and texts on the phone you already own over WiFi or data. Current web pricing is verified at checkout. No second SIM and no new device are required.
- Location
- Sioux Falls, SD, South Dakota
- Time zone
- Central & Mountain
The 605 area code covers Sioux Falls, SD and nearby South Dakota communities.
Top 20 605 numbers available right now
Pulled live from our carrier network. Last updated: August 26, 2026 at 10:10 PM UTC.
Every number requires an AvoCall plan. Current web pricing is verified at checkout, and number availability changes often.
About the 605 area code
The Sioux Falls area heads a South Dakota territory assigned to area code 605, which also includes Rapid City, Aberdeen, Watertown, and Brookings. Coverage spans both Central and Mountain time.
605 has been in service since 1947 and was among the first area codes ever assigned. It has never been split and carries no overlay, leaving one code in charge of the entire coverage area.
Dialing note: 605 has been in service since 1947, making it one of the original North American area codes.
Numbering details on this page (service dates and overlay status) are checked against the NANPA numbering registry. Registry data as of 07/16/2026.
605 phone number FAQ
- How do I get a 605 phone number?
- Pick an available 605 number and sign up for AvoCall. Your new Sioux Falls, SD number works for calls and texts on your existing phone over WiFi or data. Current web pricing is verified at checkout. There is no second SIM and no new device.
- Where is the 605 area code?
- It serves Sioux Falls, SD and nearby cities in South Dakota, including Sioux Falls, Rapid City, Aberdeen.
- Can I receive verification codes on a 605 number?
- AvoCall 605 numbers support calling and messaging. Verification-text compatibility varies by sender; short-code and 2FA delivery is not guaranteed.