All Employees: Professional and Business Services: Other Support Services in Illinois was 16.70000 Thous. of Persons in March of 2022, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services: Other Support Services in Illinois reached a record high of 26.30000 in November of 1996 and a record low of 15.10000 in December of 2015. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Professional and Business Services: Other Support Services in Illinois - last updated from the United States Federal Reserve on March of 2024.