Honokaʻa is a census-designated place in the Hamakua District of Hawaiʻi County, Hawaiʻi, United States. The population was 2,699 at the 202…Honokaʻa is a census-designated place in the Hamakua District of Hawaiʻi County, Hawaiʻi, United States. The population was 2,699 at the 2020 census.