United States - Real Gross Domestic Product Growth: Government and Government Enterprises in Montgomery County, IL was 4.00000 % Chg. from Preceding Period in January of 2015, according to the United States Federal Reserve. Historically, United States - Real Gross Domestic Product Growth: Government and Government Enterprises in Montgomery County, IL reached a record high of 9.00000 in January of 2001 and a record low of 1.00000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Real Gross Domestic Product Growth: Government and Government Enterprises in Montgomery County, IL - last updated from the United States Federal Reserve on April of 2026.