[City Wide]

Besides a difference in the types of population and the income difference, one other large difference is in the infra structure. In the City its generally old and not nec. well cared for either by gov't or private companies.

One other factor that hasn't really been touched on is how the suburbs depend on the City much more then the City depends on the suburbs. I have a friend my age, mid 60's, that I've known for over 40 years. We both used to live in the City, but after he married and had a family he moved west to where he grew up, on the main line. At the time he was bitching about investment tax issues.
In all these years he and his family have used the City and never directly paid one cent in taxes for doing so. Where I expect and encourage my taxes to be used for the same things that he uses. Used as in going to the zoo, going to the parks, concerts at the Mann center, regular trips to the museums, trips to see games in south Philly, the car show, the flower show, the orchestra, plays, trips to restaurants, time spent in the hospital. In that same time frame I've gone to the suburbs a couple of times to see gardens and maybe twice to the Byrnes Foundation, and maybe once a year to Valley Forge.
My taxes pay for what he has used in the City a lot more then what his taxes have paid for what I've used in the suburbs.
So if the City has to 'compete' with the suburbs for business, which we do, I wish that the suburbs had to help pay for everything in the City that is offered for 'free'.