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Waipahu, HI is currently using only one area code which is area code 808. Area code 808 covers the entire state
of Hawaii, including Waipahu, and was established in 1957. In addition to Waipahu, HI area code 808 serves the larger communities of Hilo, Honolulu, Kahului, Kailua, Kaneohe, Mililani Town, Pearl City, and
Waimalu. Waipahu, HI does not utilize any area code overlays. |
