ISTA Zone Map

Counties

  • Northern Zone +
    Boone
    Bureau
    Carrol
    Cook
    DeKalb
    DuPage
    Grundy
    Henry
    Jo Daviess
    Kane
    Kendall
    Lake
    La Salle
    Lee
    McHenry
    Ogle
    Stephenson
    Whiteside
    Will
    Winnebago
  • Central Zone +
    Adams
    Brown
    Cass
    Champaign
    DeWitt
    Douglas
    Edgar
    Ford
    Fulton
    Hancock
    Henderson
    Iroquois
    Kankakee
    Knox
    Livingston
    Logan
    Macon
    Marshall
    Mason
    McDonough
    McLean
    Menard
    Mercer
    Morgan
    Peoria
    Piatt
    Pike
    Putnam
    RockIlsand
    Sangamon
    Schuyler
    Scott
    Stark
    Tazwell
    Vermillion
    Warren
    Woodford
  • Southern Zone +
    Alexander
    Bond
    Calhoun
    Christian
    Clark
    Clay
    Clinton
    Coles
    Crawford
    Cumberland
    Edwards
    Effingham
    Fayette
    Franklin
    Gallatin
    Greene
    Hamilton
    Hardin
    Jackson
    Jasper
    Jefferson
    Jersey
    Johnson
    Lawrence
    Macoupin
    Madison
    Marion
    Massac
    Monroe
    Montgomery
    Moultire
    Perry
    Pope
    Pulaski
    Randolph
    Richland
    Saint Clair
    Saline
    Shelby
    Union
    Wabash
    Washington
    Wayne
    White
    Williamson