Holualoa is a census-designated place in the North Kona District of Hawaii County, Hawaii, United States. The population was 8,538 at the 2010 census, up from 6,107 at the 2000 census. Holualoa's boundaries were altered significantly for the 2020 census. The western portion of the CDP near the coast became part of the neighboring Kailua-Kona CDP, while the eastern portion of Kailua-Kona became part of Holualua. This reduced Holualoa's population to 2,994.