Resident Population in Chase County, KS was 2.57900 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Chase County, KS reached a record high of 3.40800 in January of 1970 and a record low of 2.54800 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Chase County, KS - last updated from the United States Federal Reserve on May of 2024.