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ZIP Code Database - Facts & Stats

Data Last Updated: February 1, 2023

ZIP Codes for City of Lake Saint Louis, MO

Lake Saint Louis, MO Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 63367StandardSaint Charles19,433

Timezone(s):Central (GMT -06:00)
Population:19,433 (More Details)
Male Population:9,633
Female Population:9,800
Median Age:38
ZIP Codes:1
Area Codes:1
Total Area:593 square miles (county)
Land Area:560 square miles (county)
Water Area:32 square miles (county)

Lake Saint Louis, MO Demographic Information *

There is no Census data for the city of LAKE SAINT LOUIS, MO. We have pulled information for the ZIP Code 63367 instead.
Total population19,433
Male population9,633
Female population9,800
Median age (years)38
White Population17,887
Black Population782
Indian Population54
Asian Population383
Hawaiian Population16
Hispanic Population452
Median age (Male)37.2
Median age (Female)38.8
Total households7,490
Family households (families)5,566
Average household size2.59
Average family size3.02
Total housing units7,958
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],