The Miss Illinois USA pageant is a competition that selects the representative for the state Illinois in the Miss USA pageant.
It is directed by Vanbros and Associates and is previously directed by D&D Productions from 2001 to 2014 before becoming part of Vanbros organization in 2014, headquartered in Lenexa, Kansas.
Illinois is one of the most successful states in the competition.
It is one of only four states to have won four or more Miss USA titles and one of only four states to win two Miss USA titles in consecutive years.
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.
That period was followed by many years without a placement, until Stacie Juris finished second runner-up in 2013, the state's highest placement since Catherine Warren, placed top 15 in 2006.
In 1986, sisters Tricia and Laura Bach won the title consecutively, the first occasion of this in the history of the Miss Universe organization.
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.
Olivia Pura of Deer Park was crowned Miss Illinois USA 2020 on September 2, 2019 at Braden Auditorium in Bloomington-Normal.
She will represent Illinois for the title of Miss USA 2020 on the spring of 2020.