5 Regions of Oahu

Oʻahu is the third-largest and most populated island of the Hawaiian Islands and of the U.S. state of Hawaii. The state capital, Honolulu, is on Oʻahu's southeast coast. The island of Oʻahu and the uninhabited Northwestern Hawaiian Islands constitute the City and County of Honolulu. In 2021, Oʻahu had a population of 995,638, up from 953,207 in 2010.
  • Population: 1,016,508 (2020)
  • Area: 596.7 sq mi (1,545 km²)
  • Area rank: 3rd largest Hawaiian Island
  • Highest elevation: 4,025 ft (1226.8 m)
  • Highest point: Kaʻala
  • Flower: ʻilima
  • Color: Melemele (yellow)

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Data from: en.wikipedia.org