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

Saint Clair County is located in the western part of Missouri. This famous county is named after Arthur St. Clair (1737–1818), an American soldier and Governor of the Northwest Territory. The county seat of Saint Clair County is Osceola. Formed in 1841, today Saint Clair County is home to 9 thousand residents. This map shows the borders of Saint Clair 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 Clair County.