https://www.census.gov/quickfacts/chicagocityillinois
Population estimates base, April 1, 2010, (V2019) 2,695,652. Population, percent change - April 1, 2010 (estimates base) to July 1, 2019, (V2019) -0.1%. Population, Census, April 1, 2020. 2,746,388. Population, Census, April 1, 2010. 2,695,598.