Resident Population in Butler County, KS was 68.63200 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Butler County, KS reached a record high of 68.63200 in January of 2023 and a record low of 37.40000 in January of 1972. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Butler County, KS - last updated from the United States Federal Reserve on May of 2024.