population of metro des moines
DES MOINES, Iowa â. Des Moines is the fastest growing metro area in the Midwest, increasing by 2 percent since last year, according to newly released data from the U.S. Census Bureau. The metro saw an increase of 12,145 people in one year, from 622,580 on July 1, 2015, to 634,725 on July 1, 2016.