In Missouri, Cities of the Fourth Class are empowered to enact planning and zoning measures under Chapter 89, RSMo. The general purpose of zoning is to promote the health, safety, morals and the general welfare of the community. Zoning also serves specific purposes which are, as stated in Section 89.040 of the State Statutes, to:
1. Lessen congestion in the streets;
2. Secure safety from fire, panic and other dangers;
3. Promote health and the general welfare;
4. Provide adequate light and air;
5. Prevent the overcrowding of land;
6. Avoid undue concentration of population;
7. Preserve features of a historical significance;
8. Facilitate the adequate provision of transportation, water, sewerage, schools, parks and other public requirements;
9. Conserve the values of buildings; and
10. Encourage the most appropriate use of land throughout the municipality.