Archie is a city in southern Cass County, Missouri. The city is part of the Kansas City metropolitan statistical area within the United States. Th…Archie is a city in southern Cass County, Missouri. The city is part of the Kansas City metropolitan statistical area within the United States. The population was 1,268 at the 2020 census. Archie was platted in 1880, and named after Archie Talmadge, the son of a railroad official. A post office has been in operation at Archie since 1880.