where is waipahu hawaii
Waipahu, Hawaii. Waipahu is a former sugarcane plantation town and now census-designated place (CDP) located in the Ê»Ewa District on the island of OÊ»ahu in the City & County of Honolulu, HawaiÊ»i, United States. As of the 2010 Census, the CDP population was 38,216. The U.S. postal code for Waipahu is 96797.