Mountlake terrace is located in Snohomish county Washington with a geographic area of 4.1 square miles. The total population in Mountlake terrace is 21,328 with 48.6% male and 51.4% female. Children under age 5 represent 6.0% of the population, under age 18 equal 18.9% of the population and over age 65 is 13.5% of the population. The median household income is $80,738, per capita income is $39,711. There are a total of 8,554 housing units with 53.3% owner occupied. Education includes 14.5% of residents that are high school graduates and 41.0% with a bachelor's degree or higher. The average temperature in Mountlake terrace in the summer is 64 degrees, and in the winter 42 degrees.
