Penn Valley is an unincorporated community located within Lower Merion Township, Pennsylvania, United States. Penn Valley residents share a zip code with Merion, Narberth, or Wynnewood because the community does not have its own post office. However, Penn Valley is a distinct community whose civic association demarcates its boundaries with iconic signs featuring William Penn and a farmhouse in blue or red on white, dating from 1930.

Lower Merion Township is a township in Montgomery County, Pennsylvania, United States. It is part of the Philadelphia Main Line. The township's name originates with the county of Merioneth in north Wales. Merioneth is an English-language transcription of the Welsh Meirionnydd.