The community got its name when the railroad came to the area in the 1870s. Elizabeth Ayres, a local woman, had a son who worked for Reading Railroad. He named the station after his mother, and the community around the station and around the intersection of Welsh Rd and Huntingdon Pike became known as Bethayres. Bethayres and its northern neighbor, Huntingdon Valley had separate post offices until they became one post office. Until the name was changed to solely Huntingdon Valley Post Office, Huntingdon Valley-Bethayres was the longest postal name in the United States.