I had 4 precincts in Ward 42 and 2 precincts in Ward 23. I didn't know the area, so I was going by what colleagues and my driver told me. They called the area "Kensington". (One friend who is from Philly responded saying, "Oh you were with the Kensos" - didn't know what it meant, but I knew it wasn't a nice reference)
Ward 42 would have the northern part of Kensington. Ward 23 is Frankford (black and poor white slum), and Northwood (nice black and white middle class area))
Kensington is also known as the Badlands, and is the center of the drug trade.