Sioux County ZIP Codes
North Dakota, United States · 4 codes
Sioux County in North Dakota has 4 ZIP codes, from 58528 to 58570, serving 4 places.
ZIP codes in Sioux
Frequently asked questions
What is the ZIP code of Sioux?
Sioux has 4 ZIP codes, from 58528 to 58570. The table lists the places each one serves.
How many places are listed in Sioux County?
4 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.