Mā'alaea is a census-designated place in Maui County, Hawaii, United States. The population was 310 at the 2020 census. Mā‘alaea sits on the southern coast of the isthmus separating West Maui from the island’s Central Valley. Like other ahupua‘a, it widens as it descends from mountain slopes into the sea, occupying 5.4 square miles of land and 2.3 miles of ocean.