Wyoming is still the least populated state in the nation, but it's number four in terms of growth.
The Casper Star Tribune reports the natural gas boom in Sublette County spurred a population growth of 73 percent. That's far above the state's average growth over a 10-year period, which was 14.1 percent. As a city, Gilette grew the most, 48 percent.
Sheridan County grew 9.6 percent, and the total population of the area is now estimtaed at 29,116, which averages out to 11.5 people per square mile. Those figures make Sheridan County the third most densely populated county in the state.