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.
On January 3, 1989, the community made headlines when Bucks County resident Glen Alton Barhight stole a SEPTA bus, and began a series of events which resulted in the injury of 15 people, the damage or destruction of 15 cars, and a police chase through five municipalities which ended when the bus crashed into a tree in Bethayres.[2]
