The Chambersburg Area School District covers 250 square miles in Franklin County, Pennsylvania, near the center of the Cumberland Valley. More than 61,000 people live in the district, which is composed of the Borough of Chambersburg, Greene, Hamilton, Letterkenny, and Lurgan townships, and most of Guilford Township. With more than 9,000 students, CASD is the 22nd largest district (out of 553 including Charters) in Pennsylvania. CASD also ranks 37th out of 500 in geographic size. The Chambersburg Area School District employs about 1200 employees including full time, part time, and substitutes.