Lehi is located in Utah county Utah with a geographic area of 28.1 square miles. The total population in Lehi is 66,980 with 50.2% male and 49.8% female. Children under age 5 represent 10.9% of the population, under age 18 equal 39.6% of the population and over age 65 is 5.6% of the population. The median household income is $101,429, per capita income is $30,488. There are a total of 17,781 housing units with 78.9% owner occupied. Education includes 12.0% of residents that are high school graduates and 48.5% with a bachelor's degree or higher. The average temperature in Lehi in the summer is 70 degrees, and in the winter 30 degrees.