Clayton is a town in Kent and New Castle counties in the U.S. state of Delaware. Located almost entirely in Kent County, it is part of the Dover, Delaware Metropolitan Statistical Area. The population was 2,918 at the 2010 census.

Kent County is a county located in the central part of the U.S. state of Delaware. As of the 2020 census, the population was 181,851, making it the least populous county in Delaware. The county seat is Dover, the state capital of Delaware. It is named for Kent, an English county.