Situated in the eastern north-central US, Indiana is the smallest of the 12 midwestern states and ranks 38th in size among the 50 states.
Indiana's total area is 36,185 sq mi (93,720 sq km), of which land takes up 35,932 (93,064 sq km) and water the remaining 253 sq mi (656 sq km). Shaped somewhat like a vertical quadrangle, with irregular borders on the S and W, the state extends about 160 mi (257 km) E-W and about 280 mi (451 km) N-S.
Indiana is bordered on the N by Michigan (with part of the line passing through Lake Michigan); on the E by Ohio; on the SE and S by Kentucky (the entire line formed by the north bank of the Ohio River); and on the W by Illinois (with the line in the SW demarcated by the Wabash River). The total boundary length of Indiana is 1,696 mi (2,729 km).
Indiana's geographical center is located in Boone County, 14 mi (23 km) NNW of Indianapolis.