Lexington is a consolidated city coterminous with Fayette County, Kentucky, United States, of which it is also the county seat. As of the 2020 census the city's population was 322,570, making it the second-most populous city in Kentucky, the 14th-most populous city in the Southeast, and the 59th-most populous city in the United States. By area, it is the country's 33rd-largest city.