The winning ticket was purchased at Kostner Korner at 4356 West Howard in Skokie in June 2023. It won its jackpot in the June 26, 2023 midday drawing.
Winners have one full year to claim their prize before it expires, the Illinois Lottery said.
There are currently eight Illinois Lottery prizes unclaimed, which total $6.4 million. The largest unclaimed prize is a $4.1 million Lotto ticket sold in La Grange, which was drawn on May 2.
For more information on unclaimed lottery prizes, click here.