St. Francois County
St. Francois County () is a county located in the Lead Belt region in the U.S. state of Missouri. As of the 2020 census, the population was 66,922. The largest city and county seat is Farmington. The county was officially organized on Decem ...
, Missouri, United States. It is located approximately one mile south of Route 8 about five miles west of Flat River.
A post office called Frankclay was established in 1905, and remained in operation until 1973. The community has the name of the original owner of the town site.