Williamson County, Illinois ZIP Codes
- ZIP records
12 - Cities represented
12 - Sum of listed ZIP population estimates
67,368
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 62959 | Marion | 27,793 |
| 2 | 62948 | Herrin | 12,758 |
| 3 | 62918 | Carterville | 10,658 |
| 4 | 62951 | Johnston City | 5,342 |
| 5 | 62902 | Carbondale | 4,135 |
| 6 | 62922 | Creal Springs | 2,608 |
| 7 | 62974 | Pittsburg | 1,536 |
| 8 | 62933 | Energy | 1,101 |
| 9 | 62949 | Hurst | 702 |
| 10 | 62915 | Cambria | 384 |
Cities in Williamson County
- Cambria
- Carbondale
- Carterville
- Colp
- Creal Springs
- Energy
- Freeman Spur
- Herrin
- Hurst
- Johnston City
- Marion
- Pittsburg
ZIP Directory
- ZIP 62841
- ZIP 62902
- ZIP 62915
- ZIP 62918
- ZIP 62921
- ZIP 62922
- ZIP 62933
- ZIP 62948
- ZIP 62949
- ZIP 62951
- ZIP 62959
- ZIP 62974
Browse all ZIP data for Illinois
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.