Data Last Updated: March 1, 2023

ZIP Codes for City of Alton, IA


    
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Counties:	SIOUX, IA
Area Code(s):	712
Timezone(s):	Central (GMT -06:00)
City Population:	1,216 (More Details)
CBSA:	None
Congressional District(s):	04
Land Area:	768 square miles (county)
Water Area:	1 square miles (county)

1 ZIP Code

Alton, IA ZIP Code Boundaries

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Alton, IA Covers 1 ZIP Code

ZIP Code	Type	Population	% of Population	Aliases
51003	Standard	1,700	100.00%	CARNES

Alton, IA Demographic Information *

Total population**	1,216
Male population	602
Female population	614
Median age (years)	36.6
White Population	1,166
Black Population	8
Indian Population	4
Asian Population	9
Hawaiian Population	0
Hispanic Population	57
Median age (Male)	37.6
Median age (Female)	35.5
Total households	478
Family households (families)	338
Average household size	2.54
Average family size	3.07
Total housing units	493

* Demographic data is based on 2010 Census for the City of ALTON.
** City and ZIP Code Population will not be equal due to differences in their geographies.

References

U.S. Postal Service [Last Updated: 2/1/2023], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 2/1/2023], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov/
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010], https://www.census.gov