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Lake St. Louis Missouri Map

Explore Lake St. Louis, Missouri, with this interactive street and satellite map. You can “grab” the Lake St. Louis, MO street map and move it around to re-centre it. You can change between standard map view and satellite map view by clicking the small square in the bottom left-hand corner of the map. You can use the zoom buttons on the lower right side of the map to zoom in or out to street-level detail. You will find live weather, local and world news below.

Interactive Map of Lake St. Louis, Missouri

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CityLake St. Louis
StateMissouri (MO)
CountySt. Charles
CountryUnited States of America
TimezoneCentral Time (America/Chicago)
Latitude38.780938
Longitude-90.78836
Population18,066
Density792.1 /km²
IncorporatedN/A
ZIP Code(s)63367
Area Code314
County SeatSt. Charles
School DistrictWentzville R-IV School District

About Lake St. Louis, Missouri

Lake St. Louis is a locality in St. Charles County, Missouri, United States. It has a population of 18,066. The population density is 792.1 people per km². Lake St. Louis is located at 38.7809°N, 90.7884°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 63367.

Lake St. Louis unfolds as a landscape of gentle slopes and broad horizons, where the verdant Missouri countryside meets the shimmering expanse of its namesake water. It lies 4.1 miles east-south-east of Wentzville, MO (from Wentzville, MO: bearing 121°T), and is situated 5.2 miles west-south-west of O'Fallon. The terrain, shaped by ancient geological forces, offers a pleasing undulation that guides the eye from manicured lawns and thoughtfully planned neighborhoods towards the expansive blue of the lake. Dusk here often paints the sky in hues of rose and lavender, reflecting softly on the water's surface, a quiet spectacle that seems to breathe life into the very air, lending a palpable sense of calm to the evening. The character of Lake St. Louis is one of carefully cultivated charm, a place where the whispers of nature are amplified by the deliberate design of its residential areas, creating an atmosphere of serene domesticity. The origins of Lake St. Louis are rooted in a vision for a planned community, a concept that took shape to harness the natural beauty of the area and foster a distinct way of life. Its economy, once perhaps more agrarian, has diversified, with a focus on services and retail that cater to its growing population, ensuring a steady hum of local commerce. The lake itself, more than just a geographical feature, is the heart of this locality, a hub for recreation and a constant reminder of the water's enduring presence. This community, Lake St. Louis, thrives on a sense of shared space and a commitment to maintaining the tranquil environment that drew its residents, fostering a quiet pride in its well-kept avenues and the accessible natural amenities.

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About This Lake St. Louis Map Page

This page provides an embedded street and satellite map of Lake St. Louis, Missouri — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 38.780938, -90.78836. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Lake St. Louis and St. Charles County.

Detailed location data for Lake St. Louis includes the ZIP code (63367), telephone area code (314), county seat of St. Charles County (St. Charles), and school district assignment (Wentzville R-IV School District). These are among the most commonly searched location details for any US city or town.

Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Lake St. Louis is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.

Page generatedJuly 2026
Location dataSimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data
Wikipedia validationArticle content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone.