Lehi ( LEE-hy) is a city in Utah County, Utah, United States. The population was 75,907 at the 2020 census, up from 47,407 in 2010, and it is the center of population of Utah. The rapid growth in Lehi is due, in part, to the rapid development of the tech industry region known as Silicon Slopes. Lehi is home to Thanksgiving Point, 501(c)(3) outdoor farm, garden, and museum complex which also serves as an extension of Utah State University.