The Schaumburg Township District Library, locate in in Schaumburg, Illinois, USA, is the second largest public library in Illinois. It serves the Schaumburg Township area, covering sections of Schaumburg, Hoffman Estates, Hanover Park, Roselle, and Elk Grove Village. Both Hoffman Estates and Hanover Park have branch libraries located in the cities. Annual circulation of materials totals approximately two million items, while nearly one million people visit the library each year.