Fort Wayne is a city in the U.S. state of Indiana and the seat of Allen County. Located in northeastern Indiana, the city is 18 miles (29 km) west of the Ohio border and 50 miles (80 km) south of the Michigan border. With an estimated population of 258,522 in 2014, Fort Wayne is the 77th most populous city in the United States and the second largest in Indiana. It is the principal city of the Fort Wayne metropolitan area, consisting of Allen, Wells, and Whitley counties, a combined population of 419,453 as of 2011. In addition to the three core counties, the combined statistical area (CSA) includes Adams, DeKalb, Huntington, Noble, and Steuben counties, with an estimated population of 615,077.