Koloa is located in Kauai county Hawaii with a geographic area of 1.3 square miles. The total population in Koloa is 2,448 with 50.2% male and 49.8% female. Children under age 5 represent 7.8% of the population, under age 18 equal 28.1% of the population and over age 65 is 14.9% of the population. The median household income is $61,250, per capita income is $31,222. There are a total of 818 housing units with 41.1% owner occupied. Education includes 36.9% of residents that are high school graduates and 28.5% with a bachelor's degree or higher. The average temperature in Koloa in the summer is 85 degrees, and in the winter 78 degrees.