The Answer is Back in Philly

And so is the population.
http://www.philly.com/philly/news/homepage/20091202_Hey__Philly__You_re_bigger_.html
Philly grew by 93K people in the last decade.

I knew the city had to be growing, there has been too much new development and new restaurants opening up in the city during a recession for the city not to be growing. And from being in the city in 99 to visiting there recently, there is a different vibe and energy to the city. There are a lot more things to do in Center City now besides just go to South St and Old City. There's positive development in North Philly since...the early 1940s?, South Philly is gentrifying like crazy and University city is becoming more then just a college neighborhood but a destination.