ZIP code · Lake Saint Louis · Missouri · United States

ZIP code 63367 — Lake Saint Louis

ZIP code 63367 serves Lake Saint Louis, Missouri.

Postal code
63367
Single source Value from one source, not cross-checked.
City
Lake Saint Louis
County
Saint Charles FIPS 29183
State
Missouri
Country
United States
Coordinates
38.7936, -90.7854 — precision precise (locality)
View on OpenStreetMap
Population
27,893 (ZCTA, ACS 5-year)
Population density
2,154 / sq mi
Land area
12.9 sq mi (33.5 km²) (ZCTA, ACS 5-year)
Median household income
$134,932
Per-capita income
$57,493
Median age
39.7
Households
10,530
Housing units
10,884
Median home value
$381,000
Median gross rent
$1,654 / month
Congressional districts
MO-2 (also MO-3) (119th Congress)
USDA hardiness zone
6b (-5 to 0 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
636 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 88°F), coldest Jan (avg low 21°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F394555677684888780685544
Avg low °F212433445463676557463526
Precip in2.62.43.74.75.14.73.93.63.53.43.73.1

NOAA 1991–2020 climate normals from the nearest station: WELDON SPRING NWS (8.6 mi) · NOAA NCEI

Places in ZIP 63367

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page