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ZIP Code Database - Facts & Stats

Data Last Updated: September 1, 2021

ZIP Codes for City of Monmouth, IL

Monmouth, IL Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 61462StandardWarren11,643309

Timezone(s):Central (GMT -06:00)
Counties:WARREN, IL
Population:9,444 (More Details)
Male Population:4,553
Female Population:4,891
Median Age:33
ZIP Codes:1
Area Codes:1
Total Area:543 square miles (county)
Land Area:542 square miles (county)
Water Area:1 square miles (county)

Monmouth, IL Demographic Information *

Total population9,444
Male population4,553
Female population4,891
Median age (years)33.1
White Population8,094
Black Population272
Indian Population32
Asian Population66
Hawaiian Population8
Hispanic Population1,358
Median age (Male)31.6
Median age (Female)34.6
Total households3,486
Family households (families)2,141
Average household size2.41
Average family size3.05
Total housing units3,792
* Demographic data is based on 2010 Census.

Monmouth, IL Other Information

  • Located in WARREN County, Illinois
  • Monmouth, IL is also known as:

84 Cities within 30 miles of Monmouth, IL Products


  1. U.S. Postal Service [Last Updated: 9/1/2021],
  2. Internal Data Creation [Last Updated: 9/1/2021],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],