Illinois
| Illinois Counties | Regional Locations |
|---|---|
| All Other Counties | Illinois Regional High School Science Bowl |
| Alexander County | West Kentucky High School Regional Science Bowl |
| Cook County | Chicago High School Regional Science Bowl |
| Gallatin County | West Kentucky High School Regional Science Bowl |
| Hardin County | West Kentucky High School Regional Science Bowl |
| Jackson County | West Kentucky High School Regional Science Bowl |
| Johnson County | West Kentucky High School Regional Science Bowl |
| Massac County | West Kentucky High School Regional Science Bowl |
| Pope County | West Kentucky High School Regional Science Bowl |
| Pulaski County | West Kentucky High School Regional Science Bowl |
| Saline County | West Kentucky High School Regional Science Bowl |
| Union County | West Kentucky High School Regional Science Bowl |
| Williamson County | West Kentucky High School Regional Science Bowl |
