Missouri had a population of 5,988,927, according to the 2010 Census; an increase of 137,525 (2.3 percent) since the year 2010. From 2010 to 2018, this includes a natural increase of 137,564 people since the last census (480,763 births less 343,199 deaths) and an increase of 88,088 people due to net migration into the state. Immigration from outside the United States resulted in a net increase of 50,450 people, and migration within the country produced a net increase of 37,638 people. More than half of Missourians (3,294,936 people, or 55.0%) live within the state's two largest metropolitan areas—St. Louis and Kansas City. The state's population density 86.9 in 2009, is also closer to the national average (86.8 in 2009) than any other state.