Williamson County

Illinois · Population: 66,706 · Official website

Williamson County, Illinois

Congressional representation for Williamson County, Illinois.

Congressional Districts

DistrictRepresentativeParty
Photo of Mike BostIL-12Mike BostRepublican

ZIP Codes

ZIP CodeCongressional District
62841IL-12
62890IL-12
62896IL-12
62901IL-12
62902IL-12
62915IL-12
62917IL-12
62918IL-12
62921IL-12
62922IL-12
62924IL-12
62933IL-12
62939IL-12
62948IL-12
62949IL-12
62951IL-12
62958IL-12
62959IL-12
62974IL-12
62987IL-12