Source: U.S. Census Bureau
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-St. Louis District includes all of Arkansas and portions of six other states: Missouri, Mississippi, Tennessee, Kentucky, Indiana and Illinois.
U.S. Census Bureau, Resident Population for all Illinois counties in FRB-St. Louis District [DILPOP], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/DILPOP, April 20, 2019.