Waipahu is located in Honolulu county Hawaii with a geographic area of 2.7 square miles. The total population in Waipahu is 38,276 with 48.2% male and 51.8% female. Children under age 5 represent 7.0% of the population, under age 18 equal 21.4% of the population and over age 65 is 20.4% of the population. The median household income is $78,351, per capita income is $25,012. There are a total of 8,342 housing units with 56.3% owner occupied. Education includes 34.3% of residents that are high school graduates and 18.5% with a bachelor's degree or higher. The average temperature in Waipahu in the summer is 85 degrees, and in the winter 78 degrees.