Between 1940 and 1980, the Sunbelt region of the United States grew in population by 112 percent, while the older, graying Northeast and Midwest together grew by only 42 percent. Phoenix expanded by an astonishing 1,138 percent. San Diego, Houston, Dallas-Fort Worth, Tampa, Miami, and Atlanta quadrupled in size. Even a Sunbelt laggard such as New Orleans more than doubled its population. Sunbelt Cities brings together a collection...