The campus sits on 1,200 acres (4.9 km²) in the town of Allegany, just over the line from the city of Olean. The area around campus is known as St. Bonaventure, New York, with a population of 2,100.The south edge of campus lies on the Allegheny River. Most of the
campus is wooded, and it contains a cemetery, a 9-hole golf course, an old airport, among academic and dormitory buildings. The
expansive front lawn was cited in the Guinness Book of World Records as the largest front lawn in North America.Campus buildings are designed in red brick with Italianate roofs, to reflect the architecture of St. Francis' native Italy.St. Bonaventure University has its own U.S. Post Office.
Mail may be addressed to St. Bonaventure, NY 14778.