Kahaluʻu (; ) is a residential community and census-designated place (CDP) in the City and County of Honolulu, Hawaii, United States, in the District of Koolaupoko on the island of Oahu. In Hawaiian ka haluu means "diving place". As of the 2020 census, the CDP had a total population of 5,241. Overview At Kahaluʻu, visitors to the windward side travelling via the Pali Highway, H-3, or Likelike Highway first encounter the ocean (actually Kaneohe Bay) close to the highway (Kamehameha Highway or Route 83). Kahaluʻu is a mostly rural area transforming into a denser residential community. The U.S. postal code for Kahaluʻu is 96744. A well-known landmark in Kahaluʻu is The Hygienic Store, which was the store of the largest dairy in Hawaii in the early 1900s. Geography Kahaluʻu is located at (21.461146, -157.841155). It is directly adjacent to Ahuimanu to the south and Waiahole to the north. According to the United States Census Bureau, the CDP has a total area of , of which is land and is water. The total area is 23.07% water. Demographics As of the census of 2000, there were 2,935 people, 927 households, and 716 families residing in the CDP. The population density was . There were 980 housing units at an average density of . The racial makeup of the CDP was 26.85% White, 0.37% Black or African American, 0.07% Native American, 22.18% Asian, 17.51% Pacific Islander, 0.99% from other races, and 32.03% from two or more races. Hispanic or Latino of any race were 6.81% of the population. There were 927 households, out of which 31.8% had children under the age of 18 living with them, 54.7% were married couples living together, 15.7% had a female householder with no husband present, and 22.7% were non-families. 13.5% of all households were made up of individuals, and 3.7% had someone living alone who was 65 years of age or older. The average household size was 3.17 and the average family size was 3.50. In the CDP the population was spread out, with 25.3% under the age of 18, 8.2% from 18 to 24, 27.5% from 25 to 44, 27.8% from 45 to 64, and 11.1% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 102.0 males. For every 100 females age 18 and over, there were 96.9 males. The median income for a