Lake St. Louis, MO Insights: Population,
Zip Codes, Influence, and Service Areas

The City of Lake St. Louis is a planned community situated around two lakes between Interstate 70 and Interstate 64 in western St. Charles County, Missouri, United States. The population was 16,707 as of the 2020 US Census.

Zip Codes in Lake St. Louis, MO that we also serve: 63367





Cities Close To Lake St. Louis, MO That We Also Serve