Resident Population in Sequoyah County, OK was 40.84200 Thous. of Persons in January of 2025, according to the United States Federal Reserve. Historically, Resident Population in Sequoyah County, OK reached a record high of 42.51300 in January of 2010 and a record low of 23.37000 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Sequoyah County, OK - last updated from the United States Federal Reserve on June of 2026.