Waipiʻo Acres is a census-designated place (CDP) in Honolulu County, Hawaiʻi, United States.
[2] According to the United States Census Bureau, the CDP has a total area of 1.0 square mile (2.6 km2), all of it land.
As of the census[4] of 2000, there were 5,298 people, 1,823 households, and 1,292 families residing in the CDP.
There were 1,951 housing units at an average density of 1,864.0 per square mile (719.7/km2).
21.9% of all households were made up of individuals, and 3.3% had someone living alone who was 65 years of age or older.