Jefferson County

Illinois · Population: 36,320 · Official website

Jefferson County, Illinois

Congressional representation for Jefferson County, Illinois.

Congressional Districts

DistrictRepresentativeParty
Photo of Mike BostIL-12Mike BostRepublican

ZIP Codes

ZIP CodeCongressional District
62810IL-12
62814IL-12
62816IL-12
62836IL-12
62846IL-12
62864IL-12
62872IL-12
62884IL-12
62894IL-12
62898IL-12