Waianae is located at . According to the United States Census Bureau, the CDP has a total area of, of which is land and, or 23.92%, is water.
Demographics
As of the census of 2000, there were 10,506 people, 2,595 households, and 2,221 families residing in the CDP. The population density was 3,086.0 people per square mile. There were 2,925 housing units at an average density of 859.2 per square mile. The racial makeup of the CDP was 9.35% White, 0.81% African American, 0.26% Native American, 19.44% Asian, 27.26% Pacific Islander, 0.97% from other races, and 41.92% from two or more races. Hispanic or Latino of any race were 14.00% of the population. There were 2,595 households out of which 43.9% had children under the age of 18 living with them, 58.0% were married couplesliving together, 19.6% had a female householder with no husband present, and 14.4% were non-families. 10.9% of all households were made up of individuals and 4.1% had someone living alone who was 65 years of age or older. The average household size was 4.04 and the average family size was 4.30. In the CDP the population was spread out with 34.8% under the age of 18, 10.4% from 18 to 24, 26.8% from 25 to 44, 19.8% from 45 to 64, and 8.2% who were 65 years of age or older. The median age was 29 years. For every 100 females there were 98.9 males. For every 100 females age 18 and over, there were 94.5 males. The median income for a household in the CDP was $46,717, and the median income for a family was $48,145. Males had a median income of $32,328 versus $22,451 for females. The per capita income for the CDP was $13,348. About 17.2% of families and 19.8% of the population were below the poverty line, including 28.6% of those under age 18 and 7.9% of those age 65 or over.
The Hawaii Department of Education operates the public schools. District schools inside the CDP include Leihoku Elementary School, Waianae Elementary School, Waianae Intermediate School, and Waianae High School. The district's Kamaile Academy is outside of the CDP. A PreK-12 charter school, Ka Waihona O Ka Naauao - New Century Pcs, is in the CDP.
Homeless camp
Hawaii's largest homeless camp, called Pu’uhonua o Waianae, is located here. It covers an area of about 20 acres adjacent to the boat harbor. Hawaii Governor David Ige met with Twinkle Borge, the leader of Pu'uhonua o Waianae, in March 2018, committing not to sweep the camp and displace its residents, but its future remains uncertain.
