All Employees: Construction: Construction of Buildings in Illinois was 47.70000 Thous. of Persons in January of 2021, according to the United States Federal Reserve. Historically, All Employees: Construction: Construction of Buildings in Illinois reached a record high of 59.30000 in January of 2006 and a record low of 38.20000 in January of 2012. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Construction: Construction of Buildings in Illinois - last updated from the United States Federal Reserve on April of 2024.