Shrinking Manhattan

Every time I read something like Finding Space for a Million More New Yorkers, and it seems to happen more and more often, one sharp little fact always pops up. Cause while New York City is about as populous as it's ever been, the population of Manhattan, while on a slight upswing since 1980, has basically be on the decline since 1910. And not some little thing, more like 1.2 million people. 1910 there were 2.7 million people living in Manhattan, 2000 only 1.5 million, that's nearly half as much. The question then really is not where to put all these hypothetical New Yorkers, but where exactly did they fit all the real ones?