The Idaho Lottery didn't specify where in Canyon County the ticket was sold. The winning numbers for the $1 million prize from Wednesday night's draw were 36, 44, 49, 52 and 57.
The Canyon County ticket is missing the winning Powerball number of 1.
"We are encouraging everyone who played Powerball for last night's draw to check their tickets carefully," Lottery Director Jeff Anderson said in a press release. "Too often we see players not match the Powerball and think they do not have a winning ticket."
The winner has 180 days to claim their prize at the Lottery's headquarters in Boise.