On the west, Illinois is bordered by Iowa and Missouri.
Iowa is bordered by Missouri, Wisconsin, and Illinois. Missouri is bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, and Kansas. Wisconsin is bordered by Iowa, Illinois, Minnesota, and Michigan. Kentucky is bordered by Missouri, Illinois, Indiana, Ohio, West Virginia, Virginia, and Tennessee. Indiana is bordered by Kentucky, Ohio, Illinois, and Michigan.
Illinois is bordered by Lake Michigan to the northeast.
Illinois is bordered by Indiana to the east.
Ohio River
Illinois is bordered by Wisconsin to the north.
Illinois is bordered by Wisconsin to the north.
Illinois is bordered by Wisconsin Missouri to the west. Ohio is bordered by Pennsylvania to the east. Indiana is EAST of Illinois and WEST of Ohio.
Mississippi river
Illinois is bordered by Wisconsin to the north.
Illinois is bordered by Wisconsin to the north.
Illinois is bordered by Wisconsin to the north, Iowa to the northwest, Missouri to the west, Kentucky to the southeast, and Indiana to the east. Illinois is bordered by Lake Michigan to the northeast.