The word “hippie” is usually thought to be a California invention but The Orlons were having them meet on South Street in their song with that name that reached number 3 in 1963. Some transcribe the lyrics as hippest but, really, listen to the song.
Fellow Philadelphians The Dovells also had a number 3 hit that year with “You Can’t Sit Down” which also refers to South Street and features the lyrics transcribed as “hip beat with the back beat” which some hear as “hippie with the back beat”.
Anyway, here is South Street.