23 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 60970 | Watseka | 5,991 |
| 60927 | Clifton | 2,300 |
| 60953 | Milford | 2,075 |
| 60938 | Gilman | 2,035 |
| 60955 | Onarga | 1,953 |
| 60948 | Loda | 1,660 |
| 60924 | Cissna Park | 1,565 |
| 60966 | Sheldon | 1,385 |
| 60911 | Ashkum | 1,325 |
| 60951 | Martinton | 796 |
| 60930 | Danforth | 761 |
| 60918 | Buckley | 754 |
| 60931 | Donovan | 510 |
| 60928 | Crescent City | 493 |
| 60912 | Beaverville | 475 |
| 60968 | Thawville | 374 |
| 60973 | Wellington | 347 |
| 60974 | Woodland | 297 |
| 60945 | Iroquois | 183 |
| 60956 | Papineau | 132 |
| 60967 | Stockland | 51 |
| 60926 | Claytonville | 50 |
| 60939 | Goodwine | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 23 ZCTAs in Iroquois County, Illinois (US Census).