|Time zone||UTC-5 (Eastern (EST))|
|• Summer (DST)||UTC-4 (EDT)|
Hempfield Township was one of the original townships set off when the boundaries of Lancaster County were surveyed in 1729. At that time, it included the present areas of East Hempfield Township, West Hempfield Township, Manor Township, and the Boroughs of Columbia, Mountville, and East Petersburg.
- "Early history". Reading Eagle. Jun 9, 1896. p. 25. Retrieved 18 October 2015.