Lihue is located in Kauai county Hawaii with a geographic area of 7.5 square miles. The total population in Lihue is 9,036 with 49.1% male and 50.9% female. Children under age 5 represent 4.2% of the population, under age 18 equal 21.5% of the population and over age 65 is 21.7% of the population. The median household income is $82,057, per capita income is $35,217. There are a total of 2,827 housing units with 63.2% owner occupied. Education includes 27.3% of residents that are high school graduates and 40.2% with a bachelor's degree or higher. The average temperature in Lihue in the summer is 85 degrees, and in the winter 78 degrees.