All Employees: Professional and Business Services: Travel Arrangement and Reservation Services in Illinois was 6.40631 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services: Travel Arrangement and Reservation Services in Illinois reached a record high of 15.75043 in September of 1998 and a record low of 4.42816 in December of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Professional and Business Services: Travel Arrangement and Reservation Services in Illinois - last updated from the United States Federal Reserve on March of 2024.