Port-au-Prince is similar to that of an amphitheatre; commercial districts are near the water, while residential neighborhoods are located on the hills above. Its population is difficult to ascertain due to the rapid growth of slums in the hillsides above the city; however, recent estimates place the city's population at between 2.5 and 3 million people.
wikipedia
The quake was 10 miles from Port-au-Prince.
I understand fully that it is a populous area, but what I meant is that it is not a "built up" area like, say, Singapore:
Singapore
In that sense, Port Au Prince will look pretty much the same after an earthquake as before.
Port Au Prince