Resident Population in Linn County, KS was 9.86000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Linn County, KS reached a record high of 9.86000 in January of 2023 and a record low of 7.70000 in January of 1972. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Linn County, KS - last updated from the United States Federal Reserve on May of 2024.