Honokaa is a census-designated place (CDP) in the Hamakua District of Hawaii County, Hawaii, United States. The population was 2,258 at the 2010 census.
Honokaa is located on the north side of the island of Hawaii at 20°4′39″N 155°27′51″W / 20.07750°N 155.46417°W / 20.07750; -155.46417 (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. Hawaii Route 240 branches off Route 19 and runs through the center of Honokaa, then continues west 8 miles (13 km) to its terminus at the Waipio Valley lookout.
According to the United States Census Bureau, the CDP has a total area of 1.3 square miles (3.3 km), 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. The average household size was 2.88 and the average family size was 3.37.
In the CDP the population was spread out with 25.2% under the age of 18, 7.1% from 18 to 24, 24.4% from 25 to 44, 21.7% from 45 to 64, and 21.6% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 94.3 males. For every 100 females age 18 and over, there were 93.4 males.
The median income for a household in the CDP was $41,964, and the median income for a family was $45,962. Males had a median income of $28,359 versus $23,750 for females. The per capita income for the CDP was $17,226. About 6.0% of families and 9.6% of the population were below the poverty line, including 11.5% of those under age 18 and 4.5% of those age 65 or over.