Lake Saint Louis, Missouri

Lake Saint Louis: City in Saint Charles County, Missouri, United States

About

Lake Saint Louis is a city located in the county of Saint Charles in the U.S. state of Missouri. Its population at the 2010 census was 14,545 and a population density of 627 people per km². After 10 years in 2020 city had an estimated population of 17,186 inhabitants.

Lake Saint Louis locator map
Location of Lake Saint Louis on Missouri map.

Quick Facts about Lake Saint Louis

Population 17,186 (2020)
Country United States of America
State Missouri (United States)
County Saint Charles County
Postal code 63367
Phone Area Codes 636
Area 23.21 km2
Latitude & Longitude 38.7976,-90.7857
Altitude 564 feet / 172 meters
Time Zone America/Chicago
Local time 19:52:08 (19th April 2026)
Density 740 Pop. per km² as of 2020
Population growth 15.37% (2010-2020)
Weather 63℉ Sunny 7-days weather
MOMap-doton-Lake Saint Louis locator map image
MOMap-doton-Lake Saint Louis locator map image

Geography

Lake Saint Louis is located at 38°47'51"N 90°47'8"W (38.7975500, -90.7856800).

Lake Saint Louis map

Click "full screen" full screen map icon to open full mode. View satellite images

Weather

63°F
Sunny
8 to 12 mph W Sunday

Sunny, with a high near 63.

7-Day Forecast

Official website of Lake Saint Louis

Official Website

Demographics

The population of Lake Saint Louis increased by 15.37% in 10 years.

Year Population % Change Method
2010 14,545 - census
2011 14,647 0.7% estimation process
2012 14,748 0.68% estimation process
2013 14,831 0.56% estimation process
2014 15,008 1.18% estimation process
2015 15,327 2.08% estimation process
2016 15,716 2.48% estimation process
2017 15,921 1.29% estimation process
2018 16,215 1.81% estimation process
2019 16,864 3.85% estimation process
2020 17,186 1.87% estimation process
Lake Saint Louis zip code is 63367. County name: St. Charles, County fips: 29183

People born in Lake Saint Louis (1)

American model and musician Jud Birza was born in Lake Saint Louis

Nearby Schools and Colleges

Schools and campuses linked to Lake Saint Louis, MO. Select a name to open its map and contact details.

Code Name City ZIP
455099 Urshan Graduate School of Theology Wentzville (MO) 63385

Nearby Transit Stations (6)

Rail and bus stations connected to Lake Saint Louis, MO. Select a station to open its map and address details.

Code Name Address Type
WAH Washington 301 West Front St. RAIL
KWD Kirkwood 110 West Argonne Dr. RAIL
STL Gateway Transportation Center 551 South 16th St. RAIL
HEM Hermann Wharf & Gutenberg Sts. RAIL
ALN Alton 3400 College Ave. RAIL

Closest post offices linked to Lake Saint Louis.

Post Office Name City ZIP
Wentzvill Post Office Wentzville (MO) 63385

Other cities in Saint Charles County

Cities, towns, neighborhoods & other populated places in Saint Charles County , MO.

City Name Population Title
O'Fallon 89,769 The most populous city in St.
Saint Charles 71,761 A city in St.
Saint Peters 58,043 The most populous city in St.
Wentzville 43,109 A city in St.
Dardenne Prairie 13,397 City in Saint Charles County, Missouri, United States
Cottleville 5,925 City in Saint Charles County, Missouri, United States
Weldon Spring 5,546 City in Saint Charles County, Missouri, United States
Saint Paul 2,796 City in St.
Foristell 618 City in Saint Charles County, Missouri, United States
West Alton 529 City in Saint Charles County, Missouri, United States
New Melle 506 City in Saint Charles County, Missouri, United States
Josephville 485 Human settlement in St.
Portage Des Sioux 329 City in St.
Augusta 267 City in St.
Weldon Spring Heights 90 Village in the United States

Distance to Other Cities

Lake Saint Louis distances to largest Missouri cities