Following is excerpted from Edward Pinkowski's 1962 book, Chester County Place Names.
This rustic village two miles north of West Chester began as a station on the Frazer branch of the Pennsylvania Railroad. The station which opened in 1891 was called Patton's Station, from the fact that an 18-year-old Patton boy was murdered in that section. Benjamin Green, who conducted a private school there, didn't like the name. When the first train passengers got off, he pointed to the land around the station which was owned by his family for generations and said, "This is Green Hill." Consequently a post office was opened in the railroad station by Mrs. Hannah E. Skunk and named Green Hill in honor of the early landowners.
Derby Drive • Greenhill Road • Sandwell Drive