Missouri Revised Statutes Title VII. Cities, Towns and Villages § 89.144. Peripheral zoning (third class cities over 25,000 inhabitants)

1. Any third class city having a population of more than twenty-five thousand inhabitants may, by ordinance, adopt and enforce regulations governing zoning, planning, subdivision and building within all or any portion of the unincorporated area extending two miles outward from the corporate limits of the city if the city has a zoning commission and a board of adjustment established pursuant to sections 89.010 to 89.140. When authorized by ordinance, the zoning commission and the board of adjustment of the city shall have the same powers within the unincorporated area as they have within the corporate limits of the city.

2. The ordinances, before passage, must be approved by order of the county commission of the county in which the unincorporated area is located and the ordinances shall not be more, but may be less, restrictive than the ordinances governing zoning, planning, subdivision and building within the corporate limits of the city. If building permits are required by the ordinances, they shall be issued without fee.

3. In the event the county in which the unincorporated area is located shall create a county planning commission and the planning commission shall adopt an official master plan for the unincorporated areas of the county in accordance with the provisions of chapter 64, the authority granted the city under the terms of this section shall terminate.