Ka?a?awa is a small community and census-designated place (CDP) located in the windward district of Ko?olauloa, City & County of Honolulu on the island of O?ahu, Hawai?i, United States. As of the 2010 Census, the total population for Ka?a?awa was 1,379. In Hawaiian, ka?a?awa means "the wrasse (fish)". According to the United States Census Bureau, the CDP has a total area of 1.3 square miles (3.4 km2). 0.81 square miles (2.1 km2) of it is land, and 0.54 square miles (1.4 km2) of it is water. The total area is 39.72% water.