Forget downtown or the 'burbs. People are moving to far-flung exurbs
Not long ago, Polk County's biggest draw was citrus. The Florida county produces more boxes of citrus than any other in the state. But last year more people moved there than to any other U.S. county. The migration reflects a growing trend all over the country: the rise of far-flung exurbs. Communities on the outskirts of metro areas were some of the fastest-growing last year. The U.S. Census Bureau says it's an…