Mo. Rev. Stat. § 89.340
The commission shall make and adopt a city plan for the physical development of the municipality. The city plan, with the accompanying maps, plats, charts and descriptive and explanatory matter, shall show the commission's recommendations for the physical development and uses of land, and* may include, among other things, the general location, character and extent of streets and other public ways, grounds, places and spaces; the general location and extent of public utilities and terminals, whether publicly or privately owned, the acceptance, widening, removal, extension, relocation, narrowing, vacation, abandonment or change of use of any of the foregoing; the general character, extent and layout of the replanning of blighted districts and slum areas. The commission may also prepare a zoning plan for the regulation of the height, area, bulk, location and use of private, nonprofit and public structures and premises, and of population density, but the adoption, enforcement and administration of the zoning plan shall conform to the provisions of sections 89.010 to 89.250.
§ 89.340, RSMo