@CZJimmy: make sure on your list that you have only developed acres to be more accurate. For example: the Toronto Zoo doesn't have all 700 acres developed.
that's what i've tried to do but I don't know Toronto's correct figure (it didn't seem right!!), so I was just taking it from the response in this thread (Chester's total land area is about 495 acres I believe, but I've only listed it's current developed plot)