The St. Mary's County Library serves roughly 103,000 residents of Leonardtown and St. Mary's County, Maryland. The library system consists of three branch libraries, including the Charlotte Hall Library, Leonardtown Library, and Lexington Park Library, and a Mobile Library that visits over 20 community locations monthly. It maintains a collection of 209,300 volumes and circulates approximately 1.4 million items annually. The library system offers meeting and study rooms, public computers, laptops for in-library use, WiFi, scanning/faxing services, 3D printing, notary public services, exam proctoring, and curbside pickup.