Waianae () is a census-designated place (CDP) in Honolulu County, Hawaii, United States. As of the 2020 census, the CDP population was 13,614. Its name means "waters of the mullet". Its etymology is shared with the far northern Wellington suburb of Waikanae, located in New Zealand. Geography Waianae is located at (21.447714, -158.179213). 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 . There were 2,925 housing units at an average density of . 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 couples living 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. Government and infrastructure Waianae currently falls under the jurisdiction of the Hawaii House of Representatives' 44th district and the Hawaii Senate's 21st district. In the House of Representatives, Waianae is currently represented by Cedric Gates; Maile