Mayfair, centered on the intersection of Cottman and Frankford Avenues. It is bordered by Tacony and Wissinoming to the south and east, Holmesburg to the east, Pennypack Park to the north, and Oxford Circle and Rhawnhurst to the west. Mayfair is home to a large Irish American population. (https://en.wikipedia.org/wiki/Mayfair,_Philadelphia).
In the past, Mayfair featured several groundbreaking concepts for city dwellers: bigger rowhomes with yards in the front and parking garages in the back. The automobile became the primary mode of transportation and shopping retail centers became available close to home, as shopping districts developed along Roosevelt Boulevard and Cottman Avenue. (http://planphilly.com/neighborhoods/mayfair).
Check out the Mayfair Civic Association page here: http://mayfaircdc.org/
Read what some current residents have to say about the area here: https://www.niche.com/places-to-live/n/mayfair-philadelphia-pa/#reviews