CHARLOTTE, N.C. — Charlotte was the fastest growing city in the last decade. New numbers from the Census Bureau show the urban area grew 65 percent from 2000 to 2010. The next fastest growing urban area was Austin, Texas at 51 percent.Las Vegas came in third at 43 percent. To put that in perspective, the country’s entire urban population grew 12 percent during the same time. The state of North Carolina ranks second in the nation for largest rural populations with 3,233,727. Texas came in first with 3,847,522 people and Pennsylvania came in third with 2,711,092 residents.