Roy is a city in Weber County, Utah, United States, on the west side of Interstate 15. The population in 2020 was 39,306; an increase of 6.6% from 36,884 at the 2010 census. Roy is part of the Ogden-Clearfield metropolitan area, and is considered a suburb of nearby Ogden. Primarily residential and thus viewed as a bedroom community, Roy does have a small number of businesses.