Town Hall Address 200 North Second St. St. Charles, MO 63301 United States- St. Charles County Website https://stcharlescitymo.gov Fire District 636-949-3250 3201 Boschertown Road St. Charles, MO 63301 United States Town Clerk 636-949-3282 200 North Second St., 4th Floor St. Charles, MO 63301 United States Water 636-949-3363 2871 Elm Point Industrial Dr. St. Charles, MO 63301 United States Sewer 636-949-3363 2871 Elm Point Industrial Dr. St. Charles, MO 63301 United States Tax Collector 636-949-3208 200 North Second St., Room 203 St. Charles, MO 63301 United States Town Hall Hours Monday - Friday: 8:00 AM - 5:00 PM County St. Charles