http://www.thefoodtrust.org/php/prog...t.campaign.php
this organization has been compiling data about the various urban "food deserts" in the united states---it is only a curious idea if you haven't looked into the problem--in fact, the disappearance of supermarkets--and groceries--and with them fresh food sources--particularly in less affluent urban neihborhoods--is a real problem.
i will say, shauk, for what it's worth, than when i moved from philadelphia to chicago it took quite a while for us to adapt to finding ourselves deep in the heart of the planet meat as mostly-vegetarian people, and even longer to figure out how to find locally produced food, which is the preference for political and cooking reasons. it took some research and adaptability--and was annoying as hell for the first few weeks.
you'll probably end up having to alter your patterns a bit--but it can be fun to do that---e.g. it's a very different thing going to farmer's markets for fresh stuff twice a week than to a boxstore once a week to load up on more well-travelled options...