Source: US. Bureau of the Census
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-Kansas City District includes all of Colorado, Kansas, Nebraska, Oklahoma, Wyoming, and parts of New Mexico and Missouri.
US. Bureau of the Census, Resident Population in FRB-Kansas City District [D10POP], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/D10POP, October 23, 2016.