All Employees: Professional and Business Services: Office Administrative Services in Illinois was 23.26258 Thous. of Persons in March of 2024, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services: Office Administrative Services in Illinois reached a record high of 25.59000 in October of 2017 and a record low of 9.60894 in July of 1996. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Professional and Business Services: Office Administrative Services in Illinois - last updated from the United States Federal Reserve on April of 2024.