Prospect is a borough in Butler County, Pennsylvania, USA. As of the 2000 census, the borough had a total population of 1,234.
Prospect is located at 40°54′15″N 80°2′47″W / 40.90417°N 80.04639°W / 40.90417; -80.04639 (40.904113, -80.046430).
According to the United States Census Bureau, the borough has a total area of 4.8 square miles (12.4 km²).4.8 square miles (12.4 km²) of it is land and none of the area is covered with water. Prospect is located near Moraine State Park. The town is located approximately 10 miles from Butler and 14 miles from the next nearest city New Castle.