All four winners came from the early history of the competition, with their last Miss USA being Karen Morrison, who held the title in 1974.
The pageant's most successful years were from 1984 to 1996, when all but two delegates made the cut at Miss USA.
In 1986, sisters Tricia and Laura Bach won the title consecutively, the first occasion of this in the history of the Miss Universe organization.
[2] Later on, in 1994, Kathleen Farrell, sister of Miss Florida USA 1988, won the title, making the state pageant the first to have two sisters compete in Miss USA.
Grace Rodi of Hinsdale was crowned Miss Illinois USA 2024 on May 26, 2024, at Braden Auditorium in Normal.