<Tr> <Th> GNIS feature ID </Th> <Td> 0755896 </Td> </Tr> <Tr> <Th> Website </Th> <Td> City of Clayton </Td> </Tr> <P> Clayton is a city in and the county seat of St. Louis County, Missouri, United States, and borders the city of St. Louis . The population was 15,939 at the 2010 census . The city was organized in 1877 and is named after Ralph Clayton, who donated the land for the courthouse . The city is known for its multiple skyscrapers in its business district . </P> <P> According to the United States Census Bureau, the city has a total area of 2.48 square miles (6.42 km), all of it land . </P>

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