Onerahi is a seaside suburb of Whangarei, New Zealand’s northern most city. It is the city’s only seaside suburb. It is located 9 km south-east of the centre of Whangarei, and follows the Whangarei harbour coastline until it meets the Pacific Ocean. The population was 2,046 in the 2013 Census, an increase of 42 from 2001. However, if Sherwood rise is included, the population is 5,682, an increase of 180 from 2001. The suburb’s main feature is Whangarei Airport, located on the large flat area at the southern end of the suburb, which was built up using material from the site of a former Maori Pa (fortress) just to the north. There are two concentric roads around the seaward plateau; the upper one surrounds the airport, and the lower follows the coast. The suburb is connected to Whangarei via the Onerahi Causeway. Close to the suburb in the harbour is Motu Matakohe or Limestone Island, now being managed to restore its ecosystems.