Liberty is a city in and the county seat of Clay County, Missouri, United States and is a suburb of Kansas City, located in the Kansas City Metropolitan Area. As of the 2020 United States Census the population was 30,167. Liberty is home to William Jewell College.

Clay County is located in the U.S. state of Missouri and is part of the Kansas City metropolitan area. As of the 2020 census, the county had a population of 253,335, making it the fifth-most populous county in Missouri. Its county seat is Liberty. The county was organized January 2, 1822, and named in honor of U.S. Representative Henry Clay from Kentucky, later a member of the United States Senate and United States Secretary of State.