Waipio, Hawaii
| Waipiʻo, Hawaii | |
|---|---|
| Census-designated place | |
 Location in Honolulu County and the state of Hawaii |
|
| Coordinates: 21°25′5″N 157°59′53″W / 21.41806°N 157.99806°WCoordinates: 21°25′5″N 157°59′53″W / 21.41806°N 157.99806°W | |
| Country | United States |
| State | Hawaii |
| Area | |
| • Total | 1.2 sq mi (3.1 km2) |
| • Land | 1.2 sq mi (3.1 km2) |
| • Water | 0.0 sq mi (0.0 km2) |
| Elevation | 381 ft (116 m) |
| Population (2010) | |
| • Total | 11,674 |
| • Density | 9,700/sq mi (3,800/km2) |
| Time zone | Hawaii-Aleutian (UTC-10) |
| ZIP code | 96797 |
| Area code(s) | 808 |
| FIPS code | 15-79860 |
| GNIS feature ID | 1867265 |
Waipiʻo is a census-designated place (CDP) located in the Ewa District of the island of Oʻahu in the City & County of Honolulu, Hawaii, United States. In Hawaiian, wai piʻo means "curved water". As of the 2010 census, the CDP had a population of 11,674.
The U.S. postal code for Waipiʻo is 96797.
In ancient Hawaii, the Battle of Kīpapa Gulch was said to have taken place at Kīpapa Gulch in Waipiʻo. Maʻilikākahi was the mōʻī of Oʻahu at the time. The battle began at Waikakalaua Gulch in the adjacent ahupuaʻa of Waikele. It eventually made its way into Kīpapa Gulch. The raiding party was defeated, and it is said that the gulch was "paved with the corpses of the slain."
Waipi'o is located at 21°25′5″N 157°59′53″W / 21.41806°N 157.99806°W (21.418050, -157.997988), south of Mililani Town via either Interstate H-2 or Kamehameha Highway (Hawaii Route 99). The town is immediately east of Waikele, separated by Kamehameha Highway, the road that leads southward to Farrington Highway (Hawaii Route 90) with connections then to Pearl City to the east and Waipahu to the west. In this same area south of Waipi'o is the interchange between Hawai'i Interstates H-1 and H-2.
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