I think Jane Jacobs, and my planning friends who dig Jane Jacobs, will dig this map of the “regions of influence” of U.S. cities:

The size of a city doesn’t seem to correlate to the size of its influence region, though most of the large areas (which are mostly rural and in the west) seem to have relatively small cities at their center. On the large map, it looks like there might be a small area for Lansing and possibly for Ann Arbor or another small city or cities near by; DC sort of wraps around Richmond, VA; and they really should merge “twin cities” and “Minneapolis” or at least call “twin cities” “St. Paul.”

I wonder how many of these areas of influence Jane would consider true import-replacing city-regions?

Via: O’Reilly Radar

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