The state of Indiana is the 28th largest in the United States by land area. The state is bordered by the state of Kentucky to the south, Illinois to the west, Ohio to the east, and to the north by Michigan and Lake Michigan. Illinois is located in the Midwest of the United States. The surrounding states are Wisconsin to the north, Iowa and Missouri to the west, Kentucky to the east and south, and Indiana to the east.
Illinois also borders Michigan, but only through a northeastern water boundary on Lake Michigan. Most of Illinois's western boundary is the Mississippi River, except for some areas where the river has changed course. The southeastern and southern boundary of Illinois is along the Wabash River and the Ohio River, while its northern boundary and much of its eastern boundary are straight lines (longitudinal and latitudinal). Illinois has a maximum distance from north to south of 390 miles (630 km) and 210 miles (340 km) from east to west.
Its total area is 57,918 square miles (150.010 km). Indiana is located in the north-central United States and borders Lake Michigan. The surrounding states are Michigan to the north and northeast, Illinois to the west, Kentucky to the south and Ohio to the east. The entire southern boundary is the Ohio River.
Indiana is bordered to the northwest by Lake Michigan and to the south by the Ohio River, which divides Indiana from Kentucky. Limestone The regal rock “Limestone” found and extracted in southern and central Indiana from the geological formation called Salem Limestone, is hereby adopted as the official stone of the state of Indiana.