All Employees: Information: Telecommunications in Illinois was 19.88630 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, All Employees: Information: Telecommunications in Illinois reached a record high of 51.26060 in June of 2001 and a record low of 19.88630 in January of 2024. 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.