Town Hall Address 625 New Smizer Mill Road Fenton, MO 63026 United States- St. Louis County Website https://fentonmo.org Zoning 636-349-8110 625 New Smizer Mill Road Fenton, MO 63026 United States Town Clerk 636-343-2080 625 New Smizer Mill Road Fenton, MO 63026 United States Tax Collector 636-343-2080 625 New Smizer Mill Road Fenton, MO 63026 United States County St. Louis