There are 16 zip codes in Henry County, Illinois. The most populated is 61443, located in Kewanee. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
6144313,584Kewanee
6125412,103Geneseo
612416,775Colona
612733,175Orion
614342,986Galva
612382,985Cambridge
612351,464Atkinson
614901,103Woodhull
612341,073Annawan
614131,012Alpha
61262734Lynn Center
61274269Osco
61233253Andover
61468190Opheim
61258188Hooppole
61419151Bishop Hill
showing: 16 rows

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