Mountain View is a census-designated place (CDP) in Hawaii County, Hawaii, United States located in the District of Puna. The population was 3,924 at the 2010 census, up from 2,799 at the 2000 census.
Mountain View is located on the east side of the island of Hawaii, also known as the Big Island, at 19°32′23″N 155°8′29″W (19.539730, -155.141348). It is bordered by Kurtistown to the northeast, Hawaiian Acres to the east, Fern Acres and Eden Roc to the southeast, Fern Forest to the south, and Volcano to the southwest. Hawaii Route 11 runs through the southeast side of the community, leading north 15 miles (24 km) to Hilo and southwest 15 miles to Hawaii Volcanoes National Park.
According to the United States Census Bureau, the CDP has a total area of 55.8 square miles (144.4 km2), all of it land.
At the 2010 census, there were 3,924 people in 1,318 households residing in the CDP. The population density was 69.3 people per square mile (26.7/km2). There were 1,510 housing units at an average density of 26.7 per square mile (10.3/km2). The racial makeup of the CDP was 24.90% White, 0.38% African American, 0.71% American Indian & Alaska Native, 16.00% Asian, 9.89% Native Hawaiian & Pacific Islander, 1.68% from other races, 46.43% from two or more races. Hispanic or Latino of any race were 20.41% of the population.
Of the 1,318 households, 34.6% had children under the age of 18 living with them. The average household size was 2.98.
In the Mountain View CDP the population was spread out, with 29.6% under the age of 18, 8.8% from 18 to 24, 12.4% from 25 to 34, 18.0 from 35 to 49, 21.5% from 50 to 64, and 9.7% 65 or older.