Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Harmon County, OK was 249.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Harmon County, OK reached a record high of 305.00000 in January of 2009 and a record low of 184.00000 in January of 2014. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Harmon County, OK - last updated from the United States Federal Reserve on May of 2024.