Layton is a city in Davis County, Utah, United States. It is part of the Ogden-Clearfield Metropolitan Statistical Area. As of the 2020 census, the city had a population of 81,773, with 2021 estimates showing a slight increase to 83,291. Layton is the most populous city in Davis County and the ninth most populous in Utah. In 2014, Layton contributed $1.34 billion worth of retail sales activity, the second largest market north of Salt Lake City and seventh largest in Utah.