St. Clair County Missouri (Vacant / Not In Use) has 1 places on the National Register of Historic Places.
Some of the country's most noteable architects helped create the St. Clair County places including Charles A. Smith and James L. Heckenlively. Prominent architectural styles found in St. Clair Country are .
Osceola Public School Building
(added 1999 - - #98001638)