Three years is a short time, but perhaps enough to give a sense of what is happening to US metropolitan areas. For both reasons of less uncertainty (and less work for me), I look at just the 107 US metro areas with 500,000 or more people in 2013. These regions house 213 million, two-thirds of the population. I look at the populations of core cities and their suburbs, comparing amounts and rates of change, with further comparison by population size and by region. One definitional problem is what I mean by “core” central city: not the multi-names given by OMB, but rather the historic cities by which we know the places. These can sometimes be a pair, for example, Minneapolis-St. Paul, Dallas-Ft. Worth, San Francisco-Oakland and San Bernardino-Riverside. Another problem I do not try to deal with is whether there were annexations to the core cities in these 3 years.
Image: http://www.newgeography.com
