Sioux Falls South Dakota Area Code
One area code covers Sioux Falls: 605.
The code covering Sioux Falls
| Area code | Primarily serves | In service |
|---|---|---|
| 605 | Sioux Falls | 1947 |
Scope the codes matched to Sioux Falls. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot) and LocalCallingGuide NPA list (2026-07 NPA list). Updated . Overlay relationships come from the numbering-plan authority; the place match is computed.
Which part of town has which code
Sioux Falls has a single code, so there is nothing to divide — every local line carries 605.
ZIP codes for the same city
Postal geography is organised separately from telephone geography, so Sioux Falls’s 15 ZIP codes do not map onto the codes above. They are listed in full, with the county each falls in, on the postal side of the site.