Has economic twilight fallen on nation's Sun Belt?

The AP has the answer in this contradictory piece:

Out of the nation's 100 fastest-growing counties, the majority were in Texas (19), Georgia (14), North Carolina (11) or Utah (nine), according to U.S. Census figures last year. Raleigh-Cary, N.C., and Austin-Round Rock, Texas, were the nation's fastest-growing metro areas, registering growth rates of 4.3 percent and 3.8 percent, respectively. Both high-tech centers, the two metros are also sites of major college campuses that helped cushion them.

Dallas-Fort Worth and Houston registered the biggest numerical gains, the census figures show. Phoenix and Atlanta ranked third and fourth in growth, respectively, followed by Los Angeles, despite the housing slump.

Just think Texas has no state income tax.