All observations are July 1 estimates of each year.
This series is calculated by FRB-St. Louis using data series from the Census Bureau. The FRB-Minneapolis District includes all of Minnesota, Montana, North Dakota, South Dakota, and parts of Wisconsin and Michigan.
Source: US. Bureau of the Census
US. Bureau of the Census, Resident Population in FRB-Minneapolis District [D9POP], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/D9POP/, September 1, 2015.