Population Increases in Missouri
According to Census Bureau estimates, Missouri's population rose last year to 5,842,713. This was an increase of 45,010 from 2005. Eighty-one of Missouri's 115 counties had an increase from one year to the next.
St. Louis County accounted for 17.1 percent of Missouri's total population (1,000,510) and ranks as the 38th most populous county in the nation. Jackson County had the second largest population with 664,078, increasing by 1,945.
Population increases occurred rather evenly in Missouri between natural increases (births minus deaths) and net migration (international plus internal U.S. migrations). Natural increases accounted for 51.5 percent of the population increase, while net migration accounted for 48 percent of the estimated increase.
Christian and Lincoln counties tied for the fastest growing counties in Missouri, with a 4.8 percent growth rate from 2005 to 2006. These counties also ranked in the top 100 for fastest growth rate nationally from 2000 to 2006. Christian County ranked 54th with a 29.9 percent increase and Lincoln County ranked 68th with a 28.7 percent increase.
See population estimates data for all counties.