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ZIP Code Database - Facts & Stats

ZIP Codes for City of Alton, IA

Timezone(s):Central (GMT -06:00)
Counties:SIOUX, IA
Population:1,216 (More Details)
Male Population:602
Female Population:614
Median Age:37
ZIP Codes:1
Area Codes:1
Total Area:769 square miles (county)
Land Area:768 square miles (county)
Water Area:1 square miles (county)

Alton, IA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 51003StandardSioux1,700712

Alton, IA Demographic Information *

Total population1,216
Male population602
Female population614
Median age (years)36.6
White Population1,166
Black Population8
Indian Population4
Asian Population9
Hawaiian Population0
Hispanic Population57
Median age (Male)37.6
Median age (Female)35.5
Total households478
Family households (families)338
Average household size2.54
Average family size3.07
Total housing units493
* Demographic data is based on 2010 Census.

Alton, IA Other Information

  • Located in SIOUX County, Iowa
  • Alton, IA is also known as:
    • CARNES, IA

58 Cities within 30 miles of Alton, IA Products