population of kansas city metro area
For other uses, see Kansas City (disambiguation). Kansas City is the largest city in Missouri and the sixth largest city in the Midwest. According to the U.S. Census Bureau, the city had an estimated population of 475,378 in 2015, making it the 36th largest city by population in the United States. It is the anchor city of the Kansas City metropolitan area, which straddles the KansasâMissouri border.