Belton is a city in northwestern Cass County, Missouri, United States. The population was 23,116 at the 2010 census. It is part of the Kansas City metropolitan area.
Belton was platted in 1871. The city was likely named for surveyor Capt. Marcus Lindsey Belt. A post office called Belton has been in operation since 1872.
Belton is located in northwest Cass County and is four miles from the Missouri-Kansas border. The city is on Missouri Route 58 west of [I-49/[U.S. Route 71]]. Raymore lies four miles to the east, Peculiar is seven miles to the southeast along Route 71 and Grandview is five miles to the north in Jackson County.
According to the United States Census Bureau, the city has a total area of 14.32 square miles (37.09 km2), of which 14.25 square miles (36.91 km2) is land and 0.07 square miles (0.18 km2) is water.
As of the census of 2013, there were 23,175 people, 8,623 households, and 6,083 families living in the city. The population density was 1,622.2 inhabitants per square mile (626.3/km2).