Saint Clair County, county in Missouri, United States. As of 2020 county had an estimated population of 9,689 inhabitants. The county was created 181 years ago in 1841. Its county seat is "Osceola".
There are 1 city/town in Saint Clair County, MO. The largest city of Saint Clair County is Osceola with a population of 935.
Osceola, city in St. Clair County, Missouri, United States
Cities, Towns, Neighborhoods & Other Populated Places in Saint Clair County.
|Osceola||City in St.||Saint Clair||935|