Alton Zip Codes - Madison County IL

Alton, IL Zip Code Map

Alton, IL is a city located in Madison County, Illinois and has a land area of 41.28 square miles (106.91 km2). The water area for the city is 2.12 square miles or 5.49 km2. There is one unique zip code in Alton, Illinois and it is 62002. The area code(s) for Alton is 618.

Zip Codes for Alton, IL (1)
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62002 Alton Madison

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