The island of Maui is the second-largest of the Hawaiian Islands at 727.2 square miles (1883.5 km2) and is the 17th largest island in the United States. Maui is part of the state of Hawaii and is the largest of Maui County’s four islands, bigger than Lānaʻi, Kahoʻolawe, and Molokaʻi. In 2010, Maui had a population of 154,834, third-most populous of the Hawaiian islands, behind that of Oʻahu and Hawaiʻi. Kahului is the largest town on the island with a population of 20,146. Wailuku is the seat of Maui County.