The ticket was bought at Casey's on Story Street. It was one of two $1 million tickets in Saturday's drawing.
The other winning ticket was bought in Ohio.
The Boone ticket matched the first five numbers but missed the Powerball number, winning a $200,000 prize.
But the player had added the Power Play option, which multiplied the prize by five, reaching the $1 million total. No one won Saturday's $25 million jackpot.
The winning numbers in Saturday's drawing were: 6-13-15-32-41 and Powerball 3. The Power Play number was 2.
The employees at the Boone store and lottery officials say no one has stepped forward yet to claim the $1 million.