ZIP Codes Box

Williamson County, Illinois ZIP codes

11ZIP codes
11Cities and towns
63,233People in ZIP areas
618Area code

Williamson County is in Illinois and the Central Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.

All ZIP codes in Williamson County

ZIP codeCityTypePopulationMedian income
62841Freeman SpurPO Box only118$31,750
62915CambriaPO Box only384$31,875
62918CartervilleStandard10,658$70,920
62921ColpPO Box only233–
62922Creal SpringsStandard2,608$74,245
62933EnergyStandard1,101$67,794
62948HerrinStandard12,758$60,975
62949HurstPO Box only702$37,308
62951Johnston CityStandard5,342$50,657
62959MarionStandard27,793$71,063
62974PittsburgStandard1,536$64,107

Cities and towns in Williamson County

Area codes in Williamson County

Questions

How many ZIP codes are in Williamson County, IL?
Williamson County has 11 ZIP codes, 7 of them standard ZIP codes for street addresses.
What cities are in Williamson County?
Williamson County ZIP codes cover Cambria, Carterville, Colp, Creal Springs, Energy, Freeman Spur, Herrin and Hurst and 3 other places.
What area code is Williamson County, IL?
Williamson County uses area code 618.
What time zone is Williamson County in?
Williamson County is in Central Time.

Other Illinois counties