16 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 61443 | Kewanee | 13,456 |
| 61254 | Geneseo | 12,135 |
| 61241 | Colona | 6,587 |
| 61273 | Orion | 3,120 |
| 61434 | Galva | 2,971 |
| 61238 | Cambridge | 2,549 |
| 61235 | Atkinson | 1,283 |
| 61262 | Lynn Center | 1,197 |
| 61234 | Annawan | 1,116 |
| 61413 | Alpha | 1,035 |
| 61490 | Woodhull | 1,035 |
| 61233 | Andover | 281 |
| 61274 | Osco | 197 |
| 61258 | Hooppole | 182 |
| 61419 | Bishop Hill | 134 |
| 61468 | Ophiem | 92 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 16 ZCTAs in Henry County, Illinois (US Census).