St. Louis County Library (SLCL) is a library system that serves residents of St. Louis County, Missouri, United States. It is the busiest public library in Missouri, circulating more than 12 million items in 2011. It consists of 20 branches, including the Headquarters branch, which is located at 1640 S. Lindbergh Blvd in Ladue, Missouri.
The Grant's View Branch of the library, in August 2021
St. Louis County, Missouri
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