The island of Maui is the second-largest of the Hawaiian Islands at 727.2 square miles (1,883 km) 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, which include Moloka?i, Lana?i, and unpopulated Kaho?olawe. In 2010, Maui had a population of 144,444, third-highest of the Hawaiian Islands, behind that of O?ahu and Hawai?i Island. Kahului is the largest census-designated place (CDP) on the island with a population of 26,337 as of 2010 and is the commercial and financial hub of the island. Wailuku is the seat of Maui County and is the third-largest CDP as of 2010. Other significant places include Kihei (including Wailea and Makena in the Kihei Town CDP, the island's second-most-populated CDP), Lahaina (including Ka?anapali and Kapalua in the Lahaina Town CDP), Makawao, Pukalani, Pa?ia, Kula, Ha?iku, and Hana.