Resident Population in Beaver County, OK was 5.01800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Beaver County, OK reached a record high of 7.16400 in January of 1983 and a record low of 4.99900 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Beaver County, OK - last updated from the United States Federal Reserve on May of 2024.