[3] 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.

The racial makeup of the CDP was 24.90% White, 0.38% African American, 0.71% American Indian and Alaska Native, 16.00% Asian, 9.89% Native Hawaiian and Pacific Islander, 1.68% from other races, and 46.43% from two or more races.

[5] 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.