This series is calculated by FRB-St. Louis using data series from the Bureau of Labor Statistics. The FRB-Minneapolis District includes all of Minnesota, Montana, North Dakota, South Dakota, and parts of Wisconsin and Michigan.
Source: US. Bureau of Labor Statistics
US. Bureau of Labor Statistics, Civilian Labor Force in FRB-Minneapolis District (DISCONTINUED) [D9LFN], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/D9LFN, May 27, 2016.