U-Haul puts out analyses of move-ins and destinations for truck renters periodically. They have recently released their list for 2012 for top-growth cities, which shows Denver 19th of the 30 top cities for growth.
Pittsburgh and Henderson, Nevada topped the list.
Denver's ranking slipped from 2011 to 2012. Back in 2011, Nashville and Oakland topped the list, while Denver came in third.
In 2010, Colorado Springs made the list at number 13 out of 30, and Denver did not make the list at all.