what are the fastest growing counties in the u.s.?
Also, San Juan County, Utah, was the fastest-growing county in the United States among counties with populations of 10,000 or more in 2015. It grew by 7.6 percent. Second-Fastest-Growing U.S. County in 2015 Fell to 2,858th in 2016 North Dakota counties no longer top the list of fastest-growing counties by percentage change. McKenzie County fell from second-fastest growing by percentage change to 2,858th. Williams County fell from third to 3,105th. Mountrail County fell from sixth to 2,375th. Stark County fell from eighth to 3,103rd.