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Census place · GEOID 2940043 · St. Charles County

Lake St. Louis, MO ZIP codes

3 ZIP/ZCTAs intersecting this Census place in St. Charles County.

ACS 2023 population

17,538

Median household income

$123,427

Median home value

$375,300

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Lake St. Louis (GEOID 2940043). Methodology

Combined population of ZIP/ZCTAs intersecting this place: 128,204 (3 ZIPs).

Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology

Map of Lake St. Louis, MO

Census place boundary and intersecting ZIP Code Tabulation Areas for Lake St. Louis, MO
Census place boundary for Lake St. Louis, MO. Intersecting ZCTAs may extend past the city limit. Not a USPS city limit. Boundaries: U.S. Census Bureau. Methodology · Data sources
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ZIP/ZCTA overlap with Lake St. Louis

Population overlap

Share of each ZIP/ZCTA’s population located within Lake St. Louis, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Lake St. Louis

ZIPCityCountyPopulationIncome
63366O FallonSt. Charles County54,449$98,237
63367Lake Saint LouisSt. Charles County27,893$134,932
63368O FallonSt. Charles County45,862$118,811