Kearns, UT has a population of 36,952 and is the 1,131st largest city in the United States. The population density is 7,977 per sq mi which is 23613% higher than the Utah average and 8705% higher than the national average. The median age in Kearns is 30 which is approximately 3% lower than the Utah average of 30. In Kearns, 59% of the population over 15 years of age are married, 69% speak English and 26% speak Spanish. 62% of Kearns residents were born in Utah, 21% were born out of state, 1% were born outside of the United States and 15% were foreign born.