Layton, UT has a population of 72,413 and is the 500th largest city in the United States. The population density is 3,260 per sq mi which is 9591% higher than the Utah average and 3498% higher than the national average. The median age in Layton is 30 which is approximately 2% lower than the Utah average of 30. In Layton, 64% of the population over 15 years of age are married, 88% speak English and 8% speak Spanish. 62% of Layton residents were born in Utah, 30% were born out of state, 1% were born outside of the United States and 6% were foreign born.