All Employees: Business Support Services in Illinois was 20.50000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, All Employees: Business Support Services in Illinois reached a record high of 32.50000 in January of 2001 and a record low of 20.50000 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Business Support Services in Illinois - last updated from the United States Federal Reserve on April of 2024.