According to the United States Census Bureau, the CDP has a total area of 5.8 square miles (15.1 km2), of which 4.8 square miles (12.4 km2) is land and 1.0 square mile (2.6 km2), or 17.41%, is water.[6]
Kapalua has a view of the islands of Molokaʻi and Lānaʻi.
During the plantation era, the Kapalua beach was known as Fleming Beach but was renamed after the resort.[12] A public access site on Honokahua Bay about half a mile to the north was named D.T. Fleming Park in 1975 to keep the tribute to David Thomas Fleming (1881–1955), Honolua Plantation manager of the area before the resort was built.[13][14]
As of the census[17] of 2000, there were 467 people, 186 households, and 132 families residing in the CDP. The population density was 272.9 inhabitants per square mile (105.4/km2). There were 831 housing units at an average density of 485.6 per square mile (187.5/km2). The racial makeup of the CDP was 59.31% White, 0.43% African American, 11.35% Asian, 13.28% Pacific Islander, 0.21% from other races, and 15.42% from two or more races. Hispanic or Latino of any race were 3.43% of the population.
There were 186 households, out of which 25.3% had children under the age of 18 living with them, 62.9% were married couples living together, 4.3% had a female householder with no husband present, and 28.5% were non-families. 12.9% of all households were made up of individuals, and 4.3% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 2.74.
In the CDP the population was spread out, with 17.6% under the age of 18, 6.4% from 18 to 24, 32.1% from 25 to 44, 27.2% from 45 to 64, and 16.7% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 92.2 males. For every 100 females age 18 and over, there were 108.1 males.
The median income for a household in the CDP was $57,292, and the median income for a family was $61,875. Males had a median income of $35,417 versus $32,321 for females. The per capita income for the CDP was $75,992. About 5.1% of families and 7.2% of the population were below the poverty line, including 5.6% of those under age 18 and none of those age 65 or over.
^"Station: Kapalua-W Maui AP 462.4, HI". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. Retrieved September 13, 2021.
^"D.T. Fleming Park". official web site. Maui County. Retrieved November 10, 2010.
^John R. K. Clark (2004). "lookup of Fleming ". in Hawai'i Place Names: Shores, Beaches, and Surf Sites. Ulukau, the Hawaiian Electronic Library, University of Hawaii Press. Retrieved November 10, 2010.
