There are 10 zip codes in McDonough County, Illinois. The most populated is 61455, located in Macomb. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
6145517,653Macomb
614223,042Bushnell
623262,315Colchester
614201,002Blandinsville
61440774Industry
61438691Good Hope
61470505Prairie City
61411346Adair
61416247Bardolph
61475192Sciota

Zip Codes in McDonough County, Illinois by Population (2024)