Monmouth Zip Codes - Warren County IL

Monmouth, IL Zip Code Map

Monmouth, IL is a city located in Warren County, Illinois and has a land area of 142.23 square miles (368.37 km2). The water area for the city is 0.20 square miles or 0.52 km2. There is one unique zip code in Monmouth, Illinois and it is 61462. The area code(s) for Monmouth is 309.

Zip Codes for Monmouth, IL (1)
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61462 Monmouth Warren

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