United States - Real Gross Domestic Product Growth: Private Goods-Producing Industries in Harper County, OK was 1.00000 % Chg. from Preceding Period in January of 2015, according to the United States Federal Reserve. Historically, United States - Real Gross Domestic Product Growth: Private Goods-Producing Industries in Harper County, OK reached a record high of 3.00000 in January of 2012 and a record low of 0.00000 in January of 2004. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Real Gross Domestic Product Growth: Private Goods-Producing Industries in Harper County, OK - last updated from the United States Federal Reserve on April of 2026.