Resident Population in Nemaha County, KS was 10.11400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Nemaha County, KS reached a record high of 11.82500 in January of 1970 and a record low of 9.95100 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Nemaha County, KS - last updated from the United States Federal Reserve on May of 2024.