Saint Charles County on the map of Missouri 2024. Cities, roads, borders and directions in Saint Charles County of Missouri.

Saint Charles County is situated on the eastern edge of Missouri. This particular county is named after St. Charles Borromeo (1538–1584), an Italian saint and cardinal of the Roman Catholic Church. The total area of Saint Charles County is about 561 square miles. This county, set up in 1812, is populated today by at least 410 thousand residents. Saint Charles is the county seat of Saint Charles County. This map shows the borders of Saint Charles County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Saint Charles County.