Honokaʻa is a census-designated place (CDP) in the Hamakua District of Hawaiʻi County, Hawaiʻi, United States. The population was 2,258 at the 2010 census.
Honokaʻa is located on the north side of the island of Hawaiʻi at 20°4′39″N 155°27′51″W (20.077617, -155.464074). Hawaii Route 19 runs through the southern part of the community, leading southeast 42 miles (68 km) to Hilo and west 14 miles (23 km) to Waimea. Hawaiʻi Route 240 branches off Route 19 and runs through the center of Honokaʻa, then continues west 8 miles (13 km) to its terminus at the Waipiʻo Valley lookout.
According to the United States Census Bureau, the CDP has a total area of 1.3 square miles (3.3 km2), all of it land.
As of the census of 2000, there were 2,233 people, 761 households, and 563 families residing in the CDP. The population density was 1,739.5 people per square mile (673.6/km²). There were 835 housing units at an average density of 650.5 per square mile (251.9/km²). The racial makeup of the CDP was 25.03% White, 0.09% African American, 0.04% Native American, 42.86% Asian, 3.94% Pacific Islander, 1.03% from other races, and 27.00% from two or more races. Hispanic or Latino of any race were 9.63% of the population.
There were 761 households out of which 29.2% had children under the age of 18 living with them, 54.1% were married couples living together, 14.5% had a female householder with no husband present, and 25.9% were non-families. 23.1% of all households were made up of individuals and 14.1% had someone living alone who was 65 years of age or older.