Illinois Junior Academy of Science Regions

Region 1 - Central

Fulton, Henderson, Henry, Knox, Marshall, Mason, McDonough, Menard, Mercer, Peoria, Rock Island, Stark, Tazewell, Warren, and Woodford Counties.

Region 2 - Chicago and Metropolitan Area Non-Public Schools

East of Route 83, North of Route 12/20, South of I-90 to O’Hare Field, West of Lake Michigan.

Region 3 - Chicago Public Schools

Region 4 - East Central

Champaign, DeWitt, Ford, Grundy, Iroquois, Kankakee, Livingston, Logan, Macon, McLean, Piatt, and Vermillion Counties.

Region 5 - Northern

Boone, Bureau, Carroll, DeKalb, Jo Davies, Kane, Kendall, LaSalle, Lee, McHenry, Ogle, Putnam, Stephenson, Whiteside, and Winnebago Counties.

Region 6 - North Suburban

North Half of Cook and DuPage Counties (Route 20 extended is the dividing line), and Lake County.

Region 7 - Southeastern

Clark, Clay, Coles, Crawford, Cumberland, Douglas, Edgar, Edwards, Effingham, Fayette, Jasper, Lawrence, Moultrie, Richland, Shelby, and Wabash Counties.

Region 8 - Southern

Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson, Johnson, Marion, Massac, Perry, Pope, Pulaski, Randolph, Saline, Union, Wayne, White, and Williamson Counties.

Region 9 - South Suburban

Southern Half of Cook and DuPage Counties (Route 20 extended is the dividing line) and Will County.

Region 10 - Southwestern

Adams, Brown, Calhoun, Cass, Christian, Green, Hancock, Macoupin (North of Route 16), Montgomery (North of Route 16), Morgan, Pike, Sangamon, Schuyler, and Scott Counties.

Region 11 - Joliet Area Non-Public Schools

DuPage, Grundy, Kankakee, Kendall, and Will County Parochial and Private Schools.

Region 12— Edwardsville Area

Bond, Calhoun, Clinton, Jersey, Macoupin (South of Route 16), Madison, Monroe, Montgomery (South of Route 16), St. Clair, and Washington Counties.