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City · Iowa · United States

Sioux City, IA — ZIP codes

9 ZIP codes · Woodbury County

City
Sioux City
County
Woodbury
State
Iowa
Country
United States
Postal codes
511015110251103511045110551106511085110951111
Single source
Coordinates
42.4972, -96.4029 View on OpenStreetMap

ZIP codes (9)

Postal codePlace nameVerification
51101Sioux CitySingle source
51102Sioux CitySingle source
51103Sioux CitySingle source
51104Sioux CitySingle source
51105Sioux CitySingle source
51106Sioux CitySingle source
51108Sioux CitySingle source
51109Sioux CitySingle source
51111Sioux CitySingle source

Sources and verification

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Last generated : 2026-08-21. Report an error.