The Blue Earth County Library serves 64,380 residents of Mankato and Blue Earth County, Minnesota. The library system is part of the Traverse des Sioux Regional Library System and comprises library locations in Lake Crystal, Mankato, and Mapleton. They maintain a collection of 158,754 volumes and circulate approximately 370,500 items annually. Services available to the public include meeting room rentals, internet access, obituary research help, and test proctoring. The library system also offers summer learning programs, book clubs, virtual author events, and other library programs.