

The term Oʻahu has no confirmed meaning in Hawaiian, other than that of the place itself. Oahu has for a long time been known as the "Gathering Place".


Census, up from 953,207 people in 2010 (approximately 70% of the total 1,455,271 population of Hawaii, with approximately 81% of those living in or near the Honolulu urban area). The island, which constitutes the bulk of Honolulu County, had a population of 1,016,508 according to the 2020 U.S. The highest point is Kaʻala in the Waiʻanae Range, rising to 4,003 feet (1,220 m) above sea level. The island is composed of two separate shield volcanoes: the Waiʻanae and Koʻolau Ranges, with a broad valley or saddle (the central Oahu Plain) between them. Its shoreline is 227 miles (365 km) long. Oahu is 44 miles (71 km) long and 30 miles (48 km) across. Including small associated islands such as Ford Island plus those in Kāneʻohe Bay and off the eastern ( windward) coast, its area is 596.7 square miles (1,545.4 km 2), making it the 20th-largest island in the United States. The island is within Honolulu County and the state capital, Honolulu, is on Oahu's southeast coast. It is home to roughly one million people-over two-thirds of the population of the U.S. Oahu ( / oʊ ˈ ɑː h uː/) ( Hawaiian: Oʻahu ( pronounced )), also known as "The Gathering Place", is the third-largest of the Hawaiian Islands.
