Lake St. Louis
In St. Charles County, Missouri — population 17,186 as of 2020.
Today
73°F
Chance Drizzle then Scattered Showers And Thunderstorms66% precip
Tonight
66°F
Patchy Fog57% precip
Sunday
81°F
Partly Sunny9% precip
Sunday Night
64°F
Mostly Clear1% precip
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Lake St. Louis by the numbers
Population
17,186Population figure, 2020
Households & income
- Area
- 8.54 sq mi (22.12 km²), 0.81 sq mi water
- Median age
- 42.7
- Households
- 7,351
- Persons per household
- 2.5
- Median household income
- $125,693
- Median house value
- $405,900
Municipal office
- Office
- CITY ADMINISTRATOR
- Address
- 200 CIVIC CENTER DR, LAKE ST LOUIS, MO 63367