The Joseph T. Simpson Public Library serves about 48,000 residents of the city of Mechanicsburg and is part of the Cumberland County Library System, Pennsylvania. The library maintains 10,000 volumes and circulates approximately 575,000 items per year. Services available to the public include meeting rooms, public computers with internet access, mobile printing, one-on-one tech help, and test proctoring. Simpson Library also offers summer learning programs and regular events, including book clubs, English conversation groups, storytime, crafts, LEGO club, STEAM club, and parenting classes.