Well, the key to understanding what’s happening in Detroit as well as all these Rustbelt cities—Cleveland, Detroit, St. Louis, Gary, Flint, all of them—is that we blame white flight and deindustrialization, but essentially what happened after World War II is that all American cities spread out. Sunbelt cities were able to capture that growth through annexation. In 1950, Houston, Texas, for example, was roughly the same size as Detroit: Houston was 160 square miles, Detroit, 139. But today Houston is 600 square miles because it captured all that suburban growth—they annexed all their suburbs as they grew. Detroit and Cleveland and all the other older cities, however, were not allowed to do that for a variety of legal and political reasons. And so even though metro Detroit became much larger geographically, the city itself was trapped behind these rigid municipal boundaries, and the tax base went away to the suburbs. So today the tax base of metropolitan Detroit includes just a tiny part in the city and the vast majority is in the suburbs - See more at: http://www.foundmichigan.org/wp/2012/04/18/what-the-hell-is-happening-in-detroit/#sthash.2fWUViMt.dpuf