Alton ZIP Codes

List of Zip Codes of Alton

The following table lists ZIP Codes associated with Alton, Illinois, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

S.N.	Zip Code	Latitude	Longitude	County	Population	Density
1	62002	38.93988	-90.12829	Madison	30,036	280.9

About Alton Illinois Zip Codes

The city of Alton in Illinois (IL) is served by approximately 1 ZIP Codes. These codes cover residential neighborhoods, business districts, and surrounding localities that use the city name in their mailing address.

Based on ZIP-level population estimates, the combined population covered by these ZIP Codes is around 30,036 people. Population density can vary significantly from one ZIP Code to another, reflecting the mix of dense urban blocks, commercial corridors, and lower-density residential areas.

The ZIP Codes associated with Alton fall within county jurisdictions such as Madison. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

Most ZIP codes for Alton, Illinois follow the America/Chicago time zone.

Alton ZIP Codes

List of Zip Codes of Alton

About Alton Illinois Zip Codes

Illinois Cities ZIP Codes

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