THE LAKE ST. LOUIS LAND BRIEF
Land in the
River Hills setting.
Lake St. Louis city has 8.57 square miles of land in St. Charles County. Its Census reference point is in River Hills, within Interior River Valleys and Hills.
Broad terraced river valleys contrast with wooded slopes and dissected glacial plains. Bottomland settings and upland oak landscapes occur close together across the Interior River Valleys and Hills.
Regional context: Interior River Valleys and Hills ↗ · Classification at the Census reference point
Lake St. Louis and St. Charles County
Lake St. Louis is associated with St. Charles County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Lake St. Louis by land and water
The Census records 0.81 square miles of water within Lake St. Louis, or 8.7% of its total area. It is 3.2 percentage points higher than the 5.4% recorded for St. Charles County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Lake St. Louis city has 27.6% of the land area of nearby O'Fallon city (31 square miles). These areas describe boundaries, not comparable property prices.

