A glance at a list of America's fastest growing "cities" reveals quite a surprise: most are really overgrown suburbs. Places such as Anaheim, California, Coral Springs, Florida, Naperville, Illinois, North Las Vegas, Nevada, and Plano, Texas, have swelled to big-city size with few people really noticingincluding many of their ten million residents. These "boomburbs" are large, rapidly growing, incorporated communities of more than 100,000 residents that are not the biggest city in their region. Here, Robert E. Lang and Jennifer B. LeFurgy explain who lives in them, what they look like, how...