Summary for Lake Saint Louis
About Lake Saint Louis (Click for our profile page)
Located in: Saint Charles County (see below)
Typical Abbreviation: Lk. St. Louis
Time Zone: Lake Saint Louis lies in the Central Time Zone (CST/CDT)
Telephone Area Code: (636)
ZIP Code: 63367<1>
Elevation: 570 feet [173.74 m] above sea level<2>
From the 2010 US Census (For more detail, see our Census Page for Lake Saint Louis)
Population
| Year | Population |
| 2019 Est:<3> | 16,846 (15.82% increase since 2010) |
| 2010: | 14,545 (43.03% increase since 2000) |
| 2000: | 10,169 |
Total Area:<4> 8.72 sq. miles [22.6 km²] - of which 9.32% is water (0.81 sq. miles [2.1 km²])
Housing Units:<5> 6,197
Official Website: www.lakesaintlouis.com/
GPS Coordinates (Latitude/Longitude)<6>
For the purpose of mapping and calculating distances, we have chosen the following reference point for Lake Saint Louis:
Lat: 38.784600° (or 38°47'4" N)
Lon: -90.782100° (or -90°46'55" W)
USGS Topo Map: Wentzville<7>
Federal GNIS/FIPS Codes for Lake Saint Louis
GNIS ID: 2395600
FIPS State / Place Code: 29 / 40043
(For more about Federal Codes, see our Misc Page for Lake Saint Louis)
About Saint Charles County
The city of Saint Charles is the County Seat for Saint Charles County.
From the 2010 US Census (For more detail, see our Census Page for Saint Charles)
Population
| Year | Population |
| 2019 Est: | 401,625 (11.41% increase since 2010) |
| 2010 | 360,485 (26.98% increase since 2000) |
| 2000: | 283,883 |
Total Area: 592 sq. miles [1,534.8 km²] - of which 5.43% is water (32.17 sq. miles [83.3 km²])
Housing Units: 141,016
Official Website: www.saintcharlescounty.org/
Federal GNIS/FIPS Codes for Saint Charles
GNIS ID: 758546
FIPS State / County Code: 29 / 183
(For more about Federal Codes, see our Misc Page for Lake Saint Louis)
About Missouri
From the US Census
Population
| Year | Population |
| 2019 Est: | 6,140,475 (2.53% increase since 2010) |
| 2010: | 5,988,927 (7.04% increase since 2000) |
| 2000: | 5,595,211 |
Websites for State of Missouri
Official Website: https://www.mo.gov/
Tourism: https://www.visitmo.com/
Parks: https://mostateparks.com/
Fishing & Hunting: https://huntfish.mdc.mo.gov/
Federal GNIS/FIPS Codes for State of Missouri
GNIS ID: 1779791
FIPS State: 29
(For more about Federal Codes, see our Misc Page for Lake Saint Louis)
Off-the-Road Links ...
The official website for Lake Saint Louis: www.lakesaintlouis.com/
The official website for Saint Charles County: www.saintcharlescounty.org/
The official website for State of Missouri: https://www.mo.gov/
Footnotes ...
| <1> | ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a city (such as Lake Saint Louis). When looking for a ZIP Code, whether Lake Saint Louis or elsewhere, it's always best to check the website of the United States Postal Service (USPS). |
| <2> | The elevation is an estimate for the area around Lake Saint Louis - it will be higher in some places and lower in others. |
| <3> | Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019. |
| <4> | The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Lake Saint Louis. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group. |
| <5> | A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway). |
| <6> | Longitude & latitude values may not be the geographic center of Lake Saint Louis, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source. |
| <7> | Name of the USGS 7.5 Minute topographic map which includes Lake Saint Louis. |