Fern Forest is a census-designated place (CDP) in Hawaii County, Hawaii, United States, located in the District of Puna. The population was 1,150 at the 2020 census. The population increased by 94.0% to 931 at the 2010 census.

Geography

Fern Forest is located at (19.472132, -155.130135).

According to the United States Census Bureau, the CDP has a total area of , all of it land.

Demographics

2020 census

As of the 2020 census, Fern Forest had a population of 1,150. The median age was 48.3 years. 17.4% of residents were under the age of 18 and 22.2% of residents were 65 years of age or older. For every 100 females there were 132.8 males, and for every 100 females age 18 and over there were 125.7 males age 18 and over.

0.0% of residents lived in urban areas, while 100.0% lived in rural areas.

There were 480 households in Fern Forest, of which 22.1% had children under the age of 18 living in them. Of all households, 34.4% were married-couple households, 27.5% were households with a male householder and no spouse or partner present, and 28.1% were households with a female householder and no spouse or partner present. About 35.0% of all households were made up of individuals and 16.9% had someone living alone who was 65 years of age or older. of 2010, there were 931 people and 399 households residing in the CDP. The population density was . There were 460 housing units at an average density of . The racial makeup of the CDP was 49.30% White, 0.75% African American, 0.86% American Indian & Alaska Native, 7.84% Asian, 10.63% Native Hawaiian & Pacific Islander, 0.64% from other races, and 29.97% from two or more races. Hispanic or Latino of any race were 13.53% of the population.