Yes, Philly is pretty segregated. Look at the demographics of say, South Philly vs. North Philly for example. Philadelphia magazine ran a controversial story that dealt with this type of issue a few years back.
Then you have those who claim "Philly" but technically live out in the suburbs, whether in Pennsylvania, South Jersey, or even in northern Delaware. (I wonder how many of this year's spouses live in the 'burbs. Side note: I also had read that AJ is a Philly transplant.)
On another note, the show Parking Wars featured the PPA (Philadelphia Parking Authority) for a few seasons. That was amusing (although not to those drivers who were ticketed or towed).