As of January 2015, a person must be at least 18 years old to serve alcohol in Illinois, according to the Illinois Liquor Control Commission. However, the Illinois Liquor Control Act allows jurisdictional control on the issue, and some localities in Illinois require ages older than 18.
Chicago requires people to be at least 21 to serve alcohol, and Illinois is one of 37 states mandating servers to be 18 or older to serve alcohol. Maine is the only state that allows people 17 and older to serve alcohol at on-premises establishments. In Alaska, Nevada and Utah, a person must be at least 21 to serve alcohol.