Pennellville /ˈpɛnɪvɪl/ is a hamlet in Oswego County, New York, United States. It is located in the Town of Schroeppel. Its ZIP Code is 13132. Elevation is 413 feet above Mean Sea Level.The hamlet is named after Richard Pennell M.D., of New York. His wife inherited the land from her father, George C. Schroeppel. Running through the area was a stream, called by the local Indian tribe Ahinahtanaganus upon which, in 1833, Dr. Pennell commissioned a sawmill, which was built by Laren Seymour. In the 1820s up to the 1850s, Plains Indians migrated from the western United States and occupied most of what is now Pennellville.