Resident Population in Tulsa County, OK was 682.86800 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Tulsa County, OK reached a record high of 682.86800 in January of 2023 and a record low of 399.98200 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Tulsa County, OK - last updated from the United States Federal Reserve on May of 2024.