SMITH-HURD ILLINOIS COMPILED STATUTES,

ANNOTATED THROUGH 1994 SUPPLEMENT Chapter 5, Section 460/20 – Official Language (1969) The official language of the State of Illinois is English.* *Repealed a 1923 law designating "American" as the official state language. Source: Charles V. Dale and Mark Gurevitz, Legal Analysis of Proposals to Make English the Official Language of the United States, Oct. 17, 1995, Washington, D.C.: Congressional Research Service.