to
Update
is a borough in Mercer County, Pennsylvania, along the Shenango River. The population was 4,500 at the 2000 census. It is part of the Youngstown–Warren–Boardman, OH-PA Metropolitan Statistical Area.
According to the United States Census Bureau, the borough has a total area of 1.4 square miles (3.7 km²), of which, 1.4 square miles (3.6 km²) of it is land and 0.04 square miles (0.1 km²) of it (1.42%) is water.