Williamson County, Illinois Zip Codes

Zip Code
City
Population
62959Marion27,255
62948Herrin12,679
62918Carterville10,844
62951Johnston City5,574
62902Carbondale4,344
62922Creal Springs2,824
62974Pittsburg1,523
62933Energy1,253
62949Hurst770
62915Cambria431
62921Colp243
62841Freeman Spur140

Overview of Zip Codes in Williamson County

12
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Williamson County, Illinois (US Census).