Bainbridge, Pennsylvania is a census-designated place located in Conoy Township in Lancaster County, Pennsylvania with a zip code of 17502. Bainbridge is located along Pennsylvania Route 441. As of the 2010 census the popululation was 1,355 residents.Prior to European settlement, Bainbridge was the site of a Conoy village in the first decades of the 18th century, possibly called Conejoholo.