Department of Planning

Hours: 8:00 a.m. to 4:30 p.m., Monday-Friday
Documents, plans and other items may be delivered until 5:00 P.M.

The Department of Planning provides both countywide services as well as municipal-type services to the unincorporated areas of St. Louis County. Our primary duties include:

  • Administer the Zoning Ordinance and Subdivision Ordinance
  • Staff the St. Louis County Planning Commission and St. Louis County Board of Zoning Adjustment
  • Administer federal community planning, housing, and lead grants
  • Review site plans and subdivision plats
  • Promote citizen engagement
  • Assess boundary issues before the Boundary Commission

The Lower Meramec Multi-Jurisdictional Floodplain Management Plan (FMP) Draft is available on the U.S. Army Corps of Engineers web site here

Department of Planning Annual Report.

What would you like to do?


Department of Planning
St. Louis County Government
41 S. Central Avenue, 5th Floor
Clayton, Missouri 63105

Phone   314-615-2520
Fax  314-615-3729
[email protected]