Resident Population in Chautauqua County, KS was 3.34700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Chautauqua County, KS reached a record high of 5.20000 in January of 1977 and a record low of 3.20300 in January of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Chautauqua County, KS - last updated from the United States Federal Reserve on May of 2024.