Clayton is a city in Montgomery County, Ohio, United States. The population was 13,310 at the 2020 census. A suburb of Dayton, it is part of the Dayton metropolitan area.

The city was named after John Clayton, a War of 1812 veteran.

Geography

According to the United States Census Bureau, the city has a total area of , of which is land and is water.

In 1998, Clayton annexed the remainder of Montgomery County's Randolph Township.

History

Clayton was platted in 1816 and at that time was known as Salem. It suffered when the National Road bypassed it. In 1906 it became a stop on the Dayton Northern Traction Line. It became a city in 1998 through merger with the rest of Randolph Township, Montgomery County, Ohio.

Demographics