Kearns is a city in Salt Lake County, Utah, United States. Named after Utah's U.S. Senator Thomas Kearns, it had a population of 36,723 at the 2020 Census. This was a 2.8 percent increase over the 2010 figure of 35,731. Kearns is home to the Utah Olympic Oval, an indoor speed skating oval built for the 2002 Winter Olympics.