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Williamson ZIP Codes — Illinois (IL)
| City or Location | County or District | States or Territories | States or Territories Abbrieviation | ZIP Code or Postcode |
|---|---|---|---|---|
| Freeman Spur | Williamson | Illinois | IL | 62841 |
| Cambria | Williamson | Illinois | IL | 62915 |
| Carterville | Williamson | Illinois | IL | 62918 |
| Colp | Williamson | Illinois | IL | 62921 |
| Creal Springs | Williamson | Illinois | IL | 62922 |
| Energy | Williamson | Illinois | IL | 62933 |
| Herrin | Williamson | Illinois | IL | 62948 |
| Hurst | Williamson | Illinois | IL | 62949 |
| Johnston City | Williamson | Illinois | IL | 62951 |
| Marion | Williamson | Illinois | IL | 62959 |
| Pittsburg | Williamson | Illinois | IL | 62974 |
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