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zipcodes.pro — CITY/MO/LAKE-ST-LOUIS

Lake St. Louis ZIP code, Missouri

The ZIP code for Lake St. Louis, MO is 63367, and its area code is 636.

USPS city name
1 ZIP code
Overlapping the city
3 more
Population
18,066
Area code
636

Also written Lake Saint Louis, the spelling the Postal Service uses.

NANPA lists no telephone rate centre for Lake St. Louis itself, so these are the area codes of the nearest one, Dardenne Prairie (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Lake St. Louis uses the ZIP code above. 3 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Lake St. Louis in numbers

About 18,066 people live in Lake St. Louis, in 7,351 households, the 47th-largest of Missouri's 1,062 census places. The median household income is $125,693 a year, 78% above the Missouri median of $70,702 (US: $80,734). The median owner-occupied home is valued at $405,900 (76% above the Missouri median), and median gross rent is $1,588 a month. The median age is 42.7; 51.7% of adults 25 and over hold a bachelor's degree or higher (32.4% across Missouri); the average commute takes 26 minutes.

Population18,066Lake St. Louis18,066
Households7,351Lake St. Louis7,351
Median age42.7Lake St. Louis42.7Missouri39.0US 38.9
Median household income$125,693Lake St. Louis$125,693Missouri$70,702US $80,734
Median home value$405,900Lake St. Louis$405,900Missouri$230,300US $332,700
Median gross rent$1,588Lake St. Louis$1,588Missouri$1,033US $1,413
Bachelor's degree or higher51.7%Lake St. Louis51.7%Missouri32.4%US 35.7%
Mean commute25.6 minLake St. Louis25.6 minMissouri23.5 minUS 26.4 min
Population density2,113 / sq miLake St. Louis2,113 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Lake St. Louis city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Lake Saint Louis

ZIP codes with the USPS city name Lake Saint Louis
ZIP City Type Population Median income Median home
63367 Lake Saint Louis , MO Standard 29,725 $137,648 $409,100

Other ZIP codes overlapping Lake St. Louis

These ZIP codes cover part of Lake St. Louis but are addressed as somewhere else.

ZIP codes overlapping Lake St. Louis
ZIP City Type Population Median income Median home
63366 O Fallon , MO Standard 54,769 $100,621 $304,500
63368 O Fallon , MO Standard 46,966 $124,297 $349,200
63385 Wentzville , MO Standard 51,330 $112,199 $347,200

Map of Lake St. Louis ZIP codes

63367

The ZIP codes of Lake St. Louis, MO, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Lake St. Louis

The nearest larger towns are O'Fallon (93,801 people, 3.5 mi), Wentzville (47,061 people, 5.2 mi) and St. Peters (59,092 people, 9.7 mi).

Towns near Lake St. Louis
TownPopulationDistance
O'Fallon 93,801 3.5 mi
Dardenne Prairie 13,503 4.6 mi
Wentzville 47,061 5.2 mi
St. Paul 3,456 5.3 mi
Cottleville 5,937 7.2 mi
Weldon Spring 5,310 8.7 mi
St. Peters 59,092 9.7 mi
Moscow Mills 3,823 13.6 mi
Wright City 5,240 13.9 mi
Chesterfield 49,574 14.1 mi
St. Charles 71,508 14.6 mi
Clarkson Valley 2,584 14.9 mi
Wildwood 35,133 15.4 mi
Troy 13,947 16.4 mi

More nearby: every ZIP code in St. Charles County · Missouri ZIP codes

Cite this page

zipcodes.pro. “Lake St. Louis, MO ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mo/lake-st-louis

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