Logo of Columbus, Ohio, USA シール

Columbus (/kəˈlʌmbəs/, kə-LUM-bəs) is the capital and most populous city of the U.S. state of Ohio. With a population of 905,748 at the 2020 census, it is the 14th-most populous city in the U.S., second-most populous city in the Midwest (after Chicago), and third-most populous U.S. state capital (after Phoenix, Arizona, and Austin, Texas), while the Columbus metropolitan area with an estimated 2.23 million residents is the largest metropolitan area entirely in Ohio and 32nd-largest metropolitan area in the U.S. Columbus is the county seat of Franklin County; it also extends into Delaware and Fairfield counties. Columbus originated as several Native American settlements along the Scioto River. The first European settlement was Franklinton, now a city neighborhood, in 1797. Columbus was founded in 1812 at the confluence of the Scioto and Olentangy rivers and was planned as the state capital due to its central location. Named after Italian explorer Christopher Columbus, it officially became the capital in 1816. The city grew steadily through the 19th century as a transportation and industrial hub via the National Road, Ohio and Erie Canal, and several railroads. Starting in the 1950s, Columbus experienced rapid growth, becoming Ohio's largest city by land and population by the early 1990s. In the late 20th and early 21st centuries, it further diversified as a center for finance, insurance, education, and technology. The metropolitan area is home to the Battelle Memorial Institute, the world's largest private research and development foundation; Chemical Abstracts Service, the world's largest clearinghouse of chemical information; and the Ohio State University, one of the largest universities in the United States. The Greater Columbus area is further home to the headquarters of Fortune 500 companies Cardinal Health, Nationwide, American Electric Power, Huntington Bancshares and Vertiv. It hosts cultural institutions such as the Columbus Museum of Art, COSI, Franklin Park Conservatory and Ohio Theatre. The city's major league professional sports teams include the Columbus Blue Jackets (NHL) and Columbus Crew (MLS).