Those neighbourhoods near the Delaware River and near Market Street are the oldest but there are even rowhomes from the 1930s. When looking at real estate, you'll see "modern kitchen", which means that the kitchen had been updated after 1945. When you enter the kitchen and see it 30 years out of date, it's still a "modern kitchen".I spent a week exploring Phillie, mostly on foot, and noticed all those rowhomes. The older ones have arms above the upstairs windows, with a small mirror aimed directly down; we were told it allowed the homeowner to identify the visitor (family/friend, salesman, redcoat) before running down the stairs to answer. Kind've a late-1700's "doorbell camera"!
I lived in a "Garden Apartment", which is partly below ground with windows just above the ground. I also lived in a"Townhouse Apartment", which was a modern rowhome: two storey, two bedroom.
You'll find "Twins" or semi-detached houses, which are a step up from rowhomes.
Most of the area has English, Irish, and Welsh names, such as Tredyffrin, Upper Darby/Upper Derby, Llanerch, Landsdowne, etc.
