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ZIP Code Database - Facts & Stats

Data Last Updated: October 1, 2021

ZIP Codes for City of Sioux City, IA

Sioux City, IA Covers 9 ZIP Codes

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 51101StandardWoodbury809712
ZIP Code 51102P.O. BoxWoodbury0712
ZIP Code 51103StandardWoodbury17,453712
ZIP Code 51104StandardWoodbury22,104712
ZIP Code 51105StandardWoodbury10,216712
ZIP Code 51106StandardWoodbury26,544712
ZIP Code 51108StandardWoodbury5,566712
ZIP Code 51109StandardWoodbury3,098712
ZIP Code 51111StandardWoodbury94712

Timezone(s):Central (GMT -06:00)
Population:82,684 (More Details)
Male Population:40,643
Female Population:42,041
Median Age:34
ZIP Codes:9
Area Codes:1
Total Area:878 square miles (county)
Land Area:873 square miles (county)
Water Area:5 square miles (county)

Sioux City, IA Demographic Information *

Total population82,684
Male population40,643
Female population42,041
Median age (years)33.7
White Population66,641
Black Population2,371
Indian Population2,134
Asian Population2,258
Hawaiian Population102
Hispanic Population13,598
Median age (Male)32.4
Median age (Female)35.1
Total households31,571
Family households (families)20,144
Average household size2.54
Average family size3.14
Total housing units33,425
* Demographic data is based on 2010 Census.

Sioux City, IA Other Information

  • Located in WOODBURY County, Iowa
  • Sioux City, IA is also known as:
    • JAMES, IA

55 Cities within 30 miles of Sioux City, IA Products


  1. U.S. Postal Service [Last Updated: 10/1/2021],
  2. Internal Data Creation [Last Updated: 10/1/2021],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],