Monmouth ZIP Codes

List of Zip Codes of Monmouth

The following table lists ZIP Codes associated with Monmouth, 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	61462	40.91014	-90.65176	Warren	10,640	28.9

About Monmouth Illinois Zip Codes

The city of Monmouth 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 10,640 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 Monmouth fall within county jurisdictions such as Warren. Each county manages local services, land use, and administration for the areas corresponding to its ZIP Codes.

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

Monmouth ZIP Codes

List of Zip Codes of Monmouth

About Monmouth Illinois Zip Codes

Illinois Cities ZIP Codes

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