54th. Richard M. Daley served as the 54th Mayor of Chicago from 1989 to 2011, making him the longest-serving mayor in the city's history. During his tenure, Daley oversaw significant economic growth and development in Chicago, including the construction of Millennium Park and the renovation of O'Hare International Airport.
The Political Legacy of Richard M. Daley: How Well Do You Know Chicago's Longest-Serving Mayor?