This series is calculated by FRB-St. Louis using data series from the Bureau of Labor Statistics. The FRB-Kansas City District includes all of Colorado, Kansas, Nebraska, Oklahoma, Wyoming, and parts of New Mexico and Missouri.
Source: US. Bureau of Labor Statistics
US. Bureau of Labor Statistics, Civilian Labor Force in FRB-Kansas City District (DISCONTINUED) [D10LFN], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/D10LFN, May 3, 2016.