January 17, 2011 6:10 pm Fastest Growing Areas in the Nation Are in Tarrant County Haslet and Keller in Northeast Tarrant County, are two of the fastest growing areas in the nation, along with Frisco in Collin County, according to Gadbury Group. Wake Up to Something Good 4:22 Mansfield 13-year-old becomes an author 2:57 North Texas man behind Star Wars toys shares journey 2:00 Search continues for gunman in Fort Worth apartment shooting 1:07 Man sentenced to death in murder of Burleson woman 2:01 Texas Instruments celebrates 25th anniversary