Cities that you might not expect, writes Florida, have seen increases in productivity and wealth, such as Sioux Falls, South Dakota and Des Moines, Iowa:
"Even Frostbelt metros like Buffalo, Baltimore, Philadelphia and Pittsburgh, whose very names have become bywords for decline, registered productivity gains of between 7 and 10 percent. But the five metros with the fastest population growth all saw their productivity decline. Palm Coast, Florida's dropped a whopping 18 percent, the fourth worst figure in the nation."
Florida's blog features maps that tell the story.