Henry County, Illinois Zip Codes by Population (2024)
The most populated Zip Code in Henry County, Illinois is 61443, located in Kewanee. * 2024 populations estimated based on the latest ACS 5-year data.
| Kewanee | 13,584 |
| Geneseo | 12,103 |
| Colona | 6,775 |
| Orion | 3,175 |
| Galva | 2,986 |
| Cambridge | 2,985 |
| Atkinson | 1,464 |
| Woodhull | 1,103 |
| Annawan | 1,073 |
| Alpha | 1,012 |
| Lynn Center | 734 |
| Osco | 269 |
| Andover | 253 |
| Ophiem | 190 |
| Hooppole | 188 |
| Bishop Hill | 151 |