Waiōhinu (Hawaiian for "Shiny Water") is an unincorporated community and census-designated place (CDP) in the district of Kau on the Big Island of Hawaii, in the U.S. state of Hawaii. Waiōhinu is the name of the community as well as the ahupua'a, Native Hawaiian subdivision. As of the 2020 census, the CDP had a population of 198.
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