Town Hall Address 200 Civic Center Dr. Lake Saint Louis, MO 63367 United States- St. Charles County Website https://www.lakesaintlouis.com Town Clerk 636-625-1200 200 Civic Center Dr. Lake Saint Louis, MO 63367 United States Tax Collector 636-625-1200 200 Civic Center Dr. Lake Saint Louis, MO 63367 United States Town Hall Hours Monday - Friday: 8:30 AM - 5:00 PM County St. Charles