Resident Population in Nowata County, OK was 9.43800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Nowata County, OK reached a record high of 11.97000 in January of 1982 and a record low of 9.32200 in January of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Nowata County, OK - last updated from the United States Federal Reserve on May of 2024.