Resident Population in Garfield County, OK was 62.02300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Garfield County, OK reached a record high of 67.59700 in January of 1982 and a record low of 56.34300 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Garfield County, OK - last updated from the United States Federal Reserve on May of 2024.