All Employees: Information: Telecommunications in Illinois was 22.70000 Thous. of Persons in March of 2022, according to the United States Federal Reserve. Historically, All Employees: Information: Telecommunications in Illinois reached a record high of 51.40000 in June of 2001 and a record low of 21.50000 in January of 2022. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Information: Telecommunications in Illinois - last updated from the United States Federal Reserve on March of 2024.