Some cities are...well...more city-like than others. Population density is a big factor. Out in Flagstaff, AZ, the metro area is big and relatively empty with only 7 people per square mile. A couple of hundred miles west, however, is Los Angeles-Long Beach-Santa Ana where 2,652 people per square mile soak up that southern California sunshine. I was frankly surprised. I thought New York City would be America's most dense metro area, but it is now #2 behind LA. Still, the eastern seaboard cities, Detroit, Cleveland, Chicago, Tampa, south Florida, and the San Francisco Bay area still pack in the people to provide that yummy urban goodness.