Waimānalo Beach is a census-designated place (CDP) located in the City & County of Honolulu, in the District of Koolaupoko, on the island of Oahu in the U.S. state of Hawaii. This small windward community is located near the eastern end of the island, and the climate is dry. As of the 2020 census, the CDP had a population of 4,823. This neighborhood is close to, but somewhat separate from Waimānalo, although the two form a single community. Waimānalo Beach (the town) lies along the eastern half of Waimānalo Beach (the beach), with an overall length of nearly , the longest stretch of sandy shoreline on Oahu. Waimānalo Beach has sparse commercial development along Kalanianaole Highway, and is noteworthy for its local flavor and proximity to Makapuu Beach and Sea Life Park, which lie closer to Makapuu Point at the east end of the island of Oahu. There are no hotels here. The U.S. postal code for Waimānalo Beach and Waimānalo is 96795. Kazuo Sakamaki, the first prisoner of war taken by U.S. forces during World War II, was captured on December 8, 1941, on Waimānalo Beach the day after the surprise attack on Pearl Harbor and surrounding targets in Honolulu by Imperial Japanese Navy forces. The Anderson Estate, which was featured in the TV series Magnum, P.I. as "Robin's Nest", is located in Waimānalo Beach. Geography Waimānalo Beach is located at (21.333657, -157.698055). The nearest town is Waimānalo to the west. According to the United States Census Bureau, the town has a total area of , of which is land and is water. The total area is 33.45% water. Demographics As of the census of 2000, there were 4,271 people, 1,006 households, and 848 families residing in the CDP. The population density was . There were 1,046 housing units at an average density of . The racial makeup of the CDP was 12.97% White, 0.09% African American, 0.23% Native American, 5.34% Asian, 47.39% Pacific Islander, 0.63% from other races, and 33.34% from two or more races. 6.49% of the population were Hispanic or Latino of any race. There were 1,006 households, out of which 28.7% had children under the age of 18 living with them, 51.4% were married couples living together, 23.2% had a female householder with no husband present, and 15.7% were non-families. 8.9% of all households were made up of individuals, and 2.7% had someone living alone