| Locality | Post Code |
|---|---|
| Ashkum, Iroquois | 60911 |
| Beaverville, Iroquois | 60912 |
| Buckley, Iroquois | 60918 |
| Cissna Park, Iroquois | 60924 |
| Claytonville, Iroquois | 60926 |
| Clifton, Iroquois | 60927 |
| Crescent City, Iroquois | 60928 |
| Danforth, Iroquois | 60930 |
| Donovan, Iroquois | 60931 |
| Gilman, Iroquois | 60938 |
| Goodwine, Iroquois | 60939 |
| Iroquois, Iroquois | 60945 |
| Loda, Iroquois | 60948 |
| Martinton, Iroquois | 60951 |
| Milford, Iroquois | 60953 |
| Onarga, Iroquois | 60955 |
| Papineau, Iroquois | 60956 |
| Sammons Point, Iroquois | 60922 |
| Sheldon, Iroquois | 60966 |
| Stockland, Iroquois | 60967 |
| Thawville, Iroquois | 60968 |
| Watseka, Iroquois | 60970 |
| Wellington, Iroquois | 60973 |
| Woodland, Iroquois | 60974 |