St. Louis County is located in the eastern-central portion of Missouri. It is bounded by the City of St. Louis and the Mississippi River to the east, the Missouri River to the north, and the Meramec River to the south. At the 2020 census, the total population was 1,004,125, making it the most populous county in Missouri. Its county seat is Clayton. The county is included in the St. Louis, MO–IL metropolitan statistical area.
Babler State Park, the largest of three state parks in St. Louis County
The Old Courthouse was built in downtown St. Louis from 1839 to 1856 as the second purpose-built county courthouse for St. Louis County.
Local politician David H. Armstrong was a strong supporter of the separation of the city of St. Louis from St. Louis County.
County government buildings in Clayton. From left to right: County Police headquarters, the Lawrence K. Roos County Government Building, the Buzz Westfall Justice Center, and the Courts Building
Bridgeton is a second-ring suburb of Greater St. Louis in northwestern St. Louis County, Missouri, United States. Bridgeton is located at the intersection of the St. Louis outer belt and I-70. Bridgeton serves as the primary transport hub within Greater St. Louis. The population at the 2020 census was 11,445. Portions of St. Louis Lambert International Airport are within Bridgeton. The town is featured in the documentary Atomic Homefront, which covers the effects of radioactive waste stored in the nearby West Lake Landfill site.
Welcome sign, Bridgeton, July 2016
Building damaged by tornado, 2011