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Keaʻau, Hawaii

Location in Hawaiʻi County and the state of Hawaii
Location in Hawaiʻi County and the state of Hawaii
Country United States
State Hawaii
County Hawaiʻi
 • Total 6.27 sq mi (16.25 km2)
 • Land 6.27 sq mi (16.25 km2)
 • Water 0.00 sq mi (0.00 km2)
341 ft (104 m)
 • Total 1,195
 • Density 190.50/sq mi (73.56/km2)
Time zone UTC-10 (Hawaii-Aleutian)
ZIP code
Area code(s) 808
FIPS code 15-32900
GNIS feature ID 0360892

Keaʻau (also written as Keaau) is a census-designated place (CDP) in Hawaiʻi County, Hawaii, United States located in the District of Puna. The population was 1,195 at the 2020 census. The population decreased by 12.1% from 2,253 at the 2010 census.


Keaau is located at 19°37′16″N 155°2′30″W / 19.62111°N 155.04167°W / 19.62111; -155.04167 (19.621072, -155.041706). According to the United States Census Bureau, the CDP has a total area of 2.5 square miles (6.5 km2), all of it land.

The Board on Geographic Names officially designated the populated place as Keaʻau in 2003.


Historical population
Census Pop.
2020 1,195
U.S. Decennial Census

2010 Census data

At the 2010 census there were 2,253 people in 701 households residing in the CDP. The population density was 901.2 people per square mile (352.0/km2). There were 757 housing units at an average density of 302.8 per square mile (118.3/km2). The racial makeup of the CDP was 12.38% White, 0.22% African American, 0.18% American Indian & Alaska Native, 52.02% Asian, 7.50% Native Hawaiian & Pacific Islander, 0.44% from other races, and 27.25% from two or more races. Hispanic or Latino of any race were 8.74%.

Of the 701 households, 28.0% had children under the age of 18 living with them. The average household size was 3.21.

In the Keaʻau CDP the population was spread out, with 23.7% under the age of 18, 9.5% from 18 to 24, 9.6% from 25 to 34, 19.6 from 35 to 49, 20.4% from 50 to 64, and 17.2% 65 or older. For every 100 females, there were 99.6 males. For every 100 males there were 100.4 females.

The median household income was $39,722 and the median family income in 2000 was $43,347. Males had a median income in 2000 of $27,344 versus $23,287 for females. The per capita income for the CDP in 2000 was $14,657. About 9.6% of families and 12.3% of the population were below the poverty line in 2000, including 14.9% of those under age 18 and 9.0% of those age 65 or over.

Points of interest

  • Hi'iaka's Healing Herb Garden
  • Mauna Loa Macadamia Nut Corporation visitors center between Hilo and Keaau
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