City of St. Louis, County of St. Louis, Crawford County, Franklin County, Gasconade County, Jefferson County, Lincoln County, Marion County, Monroe County, Montgomery County, Pike County, Ralls County, St. Charles County, St. Francois County, Ste. Genevieve County, Shelby County, Warren County, Washington County, Audrain County, Boone County, Phelps County, Pulaski County, Osage County, Miller County, Maries County, and Cole County.
Illinois service areas:
Bond County, Calhoun County, Clinton County, Greene County, Jersey County, Southern Half of Macoupin County, Madison County, Monroe County, Southern Half of Pike County, Randolph County, St. Clair County, and Washington County.
