Maunaloa or Mauna Loa is a census-designated place (CDP) in Maui County, Hawaiʻi, United States, in the western part of the island of Molokai. The population was 376 at the 2010 census.
Maunaloa is located at 21°8′11″N 157°12′51″W (21.136464, −157.214029).
According to the United States Census Bureau, the CDP has a total area of 0.73 square miles (1.9 km2), all of it land.
At the 2000 census there were 230 people, 65 households, and 52 families in the CDP. The population density was 1,374.6 people per square mile (522.4/km²). There were 91 housing units at an average density of 543.9 per square mile (206.7/km²). The racial makeup of the CDP was 15.7% White, 0.3% African American, 18.7% Asian, 34.4% Pacific Islander, and 30.9% from two or more races. Hispanic or Latino of any race were 5.2%.
Of the 65 households 50.8% had children under the age of 18 living with them, 56.9% were married couples living together, 18.5% had a female householder with no husband present, and 18.5% were non-families. 13.8% of households were one person and 1.5% were one person aged 65 or older. The average household size was 3.54 and the average family size was 3.96.
The age distribution was 43.5% under the age of 18, 8.3% from 18 to 24, 25.2% from 25 to 44, 14.3% from 45 to 64, and 8.7% 65 or older. The median age was 22 years. For every 100 females, there were 109.1 males.