As of 2015, Wyoming had an estimated population of 586,107, which was an increase of 1,954, or 0.29%, from the prior year and an increase of 22,481, or 3.99%, since the 2010 United States Census. This includes a natural increase since the last census of 12,165 people (that is 33,704 births minus 21,539 deaths) and an increase from net migration of 4,035 people into the state. Immigration resulted in a net increase of 2,264 people, and migration within the country produced a net increase of 1,771 people. In 2004, the foreign-born population was 11,000 (2.2%). In 2005, total births in Wyoming numbered 7,231 (birth rate of 14.04 per thousand). Sparsely populated, Wyoming is the least populous state of the United States. Wyoming has the second-lowest population density, behind Alaska. It is one of only two states with a smaller population than the nations capital, Washington, D.C. (the other state is Vermont).. How many more people were there in 2015 than in births and deaths in the last census?