Resident Population in Stevens County, WA was 48.83700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Stevens County, WA reached a record high of 48.83700 in January of 2023 and a record low of 17.40500 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Stevens County, WA - last updated from the United States Federal Reserve on May of 2024.