|— CDP —|
Honomu during rainstorm 2008
Location in Hawaii County and the state of Hawaii
|- Total||0.5 sq mi (1.3 km2)|
|- Land||0.5 sq mi (1.2 km2)|
|- Water||0 sq mi (0.1 km2)|
|- Density||1,082/sq mi (416.2/km2)|
Honomū is located at (19.871390, -155.117067).
According to the United States Census Bureau, the CDP has a total area of 0.5 square miles (1.3 km²), of which, 0.5 square miles (1.2 km²) of it is land and 0.04 square miles (0.1 km²) of it (6.12%) is water.
As of the census of 2000, there were 541 people, 193 households, and 143 families residing in the CDP. The population density was 1,172.8 people per square mile (454.1/km²). There were 213 housing units at an average density of 461.7/sq mi (178.8/km²). The racial makeup of the CDP was 23.29% White, 0.74% Native American, 29.94% Asian, 5.18% Pacific Islander, 2.03% from other races, and 38.82% from two or more races. Hispanic or Latino of any race were 12.20% of the population.
There were 193 households out of which 26.9% had children under the age of 18 living with them, 50.3% were married couples living together, 16.6% had a female householder with no husband present, and 25.9% were non-families. 19.7% of all households were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.19.
In the CDP the population was spread out with 24.0% under the age of 18, 5.9% from 18 to 24, 25.0% from 25 to 44, 24.2% from 45 to 64, and 20.9% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 89.8 males. For every 100 females age 18 and over, there were 91.2 males.
The median income for a household in the CDP was $30,179, and the median income for a family was $35,536. Males had a median income of $28,438 versus $19,167 for females. The per capita income for the CDP was $15,190. About 11.9% of families and 16.6% of the population were below the poverty line, including 27.6% of those under age 18 and 0.9% of those age 65 or over.