Ohio

Ohio, constituent state of the United States of America, on the northeastern edge of the Midwest region. Lake Erie lies on the north, Pennsylvania on the east, West Virginia and Kentucky on the southeast and south, Indiana on the west, and Michigan on the northwest. Ohio ranks 34th in terms of total area among the 50 states, and it is one of the smallest states west of the Appalachian Mountains. The state ranks near the top, however, in population. Ohio’s capital, after being located in Chillicothe and Zanesville during the early years of statehood, was finally established in newly founded and centrally located Columbus in 1816. The state takes its name from the Ohio River, which in turn traces its name to an Iroquoian word meaning “great water.”

The first state to be carved from the Northwest Territory, Ohio became the 17th member of the union on March 1, 1803. In many respects, Ohio has come to reflect the urbanized, industrialized, and ethnically mixed United States that developed from an earlier agrarian period. The pattern of its life is so representative of the country as a whole that it is often used to test attitudes, ideas, and commercial products. Significantly, Ohio has supplied by birth or residence eight U.S. presidents—William H. Harrison, Ulysses S. Grant, Rutherford B. Hayes, James A. Garfield, Benjamin Harrison, William McKinley, William H. Taft, and Warren G. Harding.

The state’s accessibility has been perhaps the key factor in its growth. Its location between the Eastern Seaboard and the heart of the Midwest and its lack of natural barriers to movement made it a corridor for east-west travel. In addition, the state lies in the heart of the country’s old industrial belt, close to major resources of raw materials and labour and to the markets of the East, Midwest, and South.

Area 44,826 square miles (116,098 square km). Population (2020) 11,799,448; (2022 est.) 11,756,058.