Williamson County Illinois Zip Codes

Cities in

Below are a list of the cities located in Williamson County, IL. There are 11 total unique zip codes in Williamson County, Illinois. The time zone for Williamson County is the Central Daylight Time zone and they follow daylight savings time. The Federal Information Processing System (FIPS) Code for is 17199.

The population in Williamson County, IL is currently 66,879. That is a decrease of 0.00% vs the population of 66,357 in 2010.

Zip Codes for Williamson County, IL (11)
Zip Code
 City County
Zip Code Map
62841 Freeman Spur Williamson
62915 Cambria Williamson
62918 Carterville Williamson
62921 Colp Williamson
62922 Creal Springs Williamson
62933 Energy Williamson
62948 Herrin Williamson
62949 Hurst Williamson
62951 Johnston City Williamson
62959 Marion Williamson
62974 Pittsburg Williamson

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