See also: Hanover Township, Pennsylvania (disambiguation). Hanover is a borough in York County, Pennsylvania, 19 miles (31 km) southwest of York and 54 miles (87 km) north-northwest of Baltimore, Maryland and is 5 miles (8.0 km) north of the Mason-Dixon line. The town is situated in a productive agricultural region. The population was 15,289 at the 2010 census.
Horsepower (hp) is a unit of measurement of power (the rate at which work is done).
Units called horsepower have differing definitions: 1  The mechanical horsepower, also known as imperial horsepower equals approximately 745.7 watts. 2  The metric horsepower equals approximately 735.5 watts (98.6% of an imperial mechanical horsepower). 3  The boiler horsepower equals 9809.5 watts.