State
Area Code 605
Sioux Falls, Rapid City, Aberdeen, South Dakota
Local time now
…
Time zone
Central + Mountain
Main cities
Sioux Falls, Rapid City, Aberdeen, Spearfish, Watertown, Pierre
Overlays
None
In service since
1947
When you can make sales calls to 605 numbers
| Monday – Friday | 9 AM – 9 PM |
| Saturday | 9 AM – 9 PM |
| Sunday | No calls |
In the called person's local time. Guidance, not legal advice.
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Other area codes in South Dakota
Questions about area code 605
- Where is area code 605?
- Area code 605 is in South Dakota, covering Sioux Falls, Rapid City, Aberdeen, Spearfish.
- What time zone is area code 605?
- Central and Mountain time (it covers two time zones).
- When can telemarketers call a 605 number?
- Federal rules allow sales calls from 8 AM to 9 PM local time, and South Dakota has stricter hours shown on this page.
- Is 605 a toll-free number?
- No. 605 is a regular area code for South Dakota. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.