Holladay is located in Salt lake county Utah with a geographic area of 8.5 square miles. The total population in Holladay is 30,461 with 49.1% male and 50.9% female. Children under age 5 represent 5.9% of the population, under age 18 equal 25.1% of the population and over age 65 is 17.0% of the population. The median household income is $92,635, per capita income is $50,328. There are a total of 11,170 housing units with 77.8% owner occupied. Education includes 8.6% of residents that are high school graduates and 59.5% with a bachelor's degree or higher. The average temperature in Holladay in the summer is 70 degrees, and in the winter 30 degrees.