All Employees: Construction: Heavy and Civil Engineering Construction in Maryland was 16.34337 Thous. of Persons in March of 2024, according to the United States Federal Reserve. Historically, All Employees: Construction: Heavy and Civil Engineering Construction in Maryland reached a record high of 26.80006 in March of 1990 and a record low of 13.48084 in February of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Construction: Heavy and Civil Engineering Construction in Maryland - last updated from the United States Federal Reserve on April of 2024.