A few older cities are incorporated under legislative charters (Carrollton, Chillicothe, LaGrange, Liberty, Miami, Missouri City, and Pleasant Hill) which are no longer allowed.
They do not change if they gain or lose in population, unless a vote is held by the people.
A municipality incorporates as a 4th Class city if the population is between 500 and 2,999 (under 500, it may incorporate as a village[1] – see list of villages in Missouri).
Cities under constitutional charters may operate under any form of municipal government if it is enacted in the city's charter.
Population data based on 2023 estimates.