exburb means: This is the ring of sprawled, low-density cities that are heavily dependent on their automobiles and located at the edges of metropolitan areas. These exurban areas are almost entirely white and result from the influx of minorities into the suburbs. This is due to the gentrification in the inner cities, rising incomes of minority groups, and the decrepitation of old, poorly constructed suburban homes. (in Community Dictionary, added by Alec Lynch)