St. Louis Region
The Historic County Courthouse still marks Clerks' Hill
The Historic County Courthouse gives St. Charles County a civic landmark that is still tied to current government. The county says the building at 100 N. Third Street houses the offices of the County Executive, County Counselor, County Council, and Director of Administration.
The same county history says St. Charles County was organized in 1812 and bought the permanent courthouse site from the City of St. Charles in 1851. Two modest buildings for the County Clerk and Circuit Clerk stood there, and for years the location was known as Clerks’ Hill. The courthouse that followed was begun in 1900, occupied in 1903, finished in 1905, and formally dedicated in 1913 after an earlier dedication was canceled by Missouri River flooding.
For a resident or visitor, this explains why county government still has a visible old-city anchor near the river.
Where to see it
- Historic County Courthouse
Use St. Charles County's page for the courthouse address, current county-office use, and Clerks' Hill history.
References
More from St. Charles County: browse every local note for the county.
Last checked against the sources above: July 16, 2026.