Khei is a census-designated place (CDP) in Maui County, Hawaii, United States. The population was 20,881 at the 2010 census. Khei is located at 204533N1562726W / 20.75917N 156.45722W / 20.75917; -156.45722 (20.759122, 156.457228). According to the United States Census Bureau, the CDP has a total area of 11.7 square miles (30.2km2), of which 9.3 square miles (24.0km2) is land and 2.4 square miles (6.2km2), or 20.44%, is water. It is considered to be the South Side of Maui, located on the leeward side of Haleakala. The climate is arid, receiving no more than 10 inches (250mm) of rain per year. As of the census of 2000, there were 16,749 people, 6,170 households, and 3,813 families residing in the CDP. The population density was 1,648.6 people per square mile (636.5/km2). There were 9,170 housing units at an average density of 902.6 per square mile (348.5/km2). The racial makeup of the CDP was 47.76% White, 6.74% African American, 0.48% Native American, 24.72% Asian, 7.85% Pacific Islander, 1.58% from other races, and 16.87% from two or more races. Hispanic or Latino of any race were 1.52% of the population.