All Employees: Air Transportation in Illinois was 37.80000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, All Employees: Air Transportation in Illinois reached a record high of 45.50000 in January of 2001 and a record low of 32.00000 in January of 2009. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Air Transportation in Illinois - last updated from the United States Federal Reserve on March of 2024.