What County Is Lake St. Louis, Missouri In?
Lake St. Louis is in St. Charles County, Missouri.
- Official code
- 2940043
- Representative coordinates
- 38.779890, -90.785586
- Land area
- 22.186 km²
- Water area
- 2.103 km²
- State
- Missouri
The representative point identifies this area. It is not a street address or a boundary survey.
County boundaries in Lake St. Louis
For a point close to the city or county boundary, check the address with the office responsible for your form. Check a point on the county map.
Coordinates of Lake St. Louis
38.779890, -90.785586 is the Census representative point, not a street address. Convert these coordinates or prepare a map link.
Elevation in Lake St. Louis
181 m · 594 ft. GNIS archived height at its named reference point (38.7846048, -90.7885947), which may differ from the Census point. Terrain height varies across the place; this is not a city-wide or surveyed elevation. Request height at a different point.
Today’s sunrise and sunset
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Approximate calculations at the representative coordinates, using a level horizon. Terrain and weather can change what you see.
Time zones in Lake St. Louis
The representative point uses America/Chicago.
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
A city boundary, a CDP and a mailing city can mean different things.
Find the county at your current point, check its ZIP area, or find its physical time zone.