Resident Population in Geary County, KS was 35.04700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Geary County, KS reached a record high of 37.94600 in January of 2012 and a record low of 27.69900 in January of 1997. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Geary County, KS - last updated from the United States Federal Reserve on May of 2024.