Kealia is an unincorporated community on the island of Kauai in Kauai County, Hawaii, United States. Its elevation is 16 feet. The Board on Geographic Names officially designated it "Kealia" in 1914. Although it is unincorporated, it has a post office, with the ZIP code of 96751. James Wood Bush, a Hawaiian veteran of the American Civil War and later Mormon convert was a resident of Kealia.