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North Island
Te Ika-a-Māui (Māori)
	North Island
Geography
Location	Oceania
Coordinates	39°S 176°E / 39°S 176°E
Archipelago	New Zealand
Major islands	North Island
Area	113,729 km2 (43,911 sq mi)
Area rank	14th
Highest elevation	2,797 m (9177 ft)
Highest point	Mount Ruapehu
Administration
	New Zealand
Regions	9
Territorial authorities	43
Largest settlement	Auckland (pop. 1,531,400)
Demographics
Demonym	North Islander
Population	4,077,800 (June 2024)
Pop. density	35.9/km2 (93/sq mi)
Ethnic groups	European (63.1%), Māori (19.8%), Asian (19.3%), Pacific peoples (10.6%)

The North Island (Māori: Te Ika-a-Māui [tɛ i.kɐ ɐ mɑː.ʉ.i], lit. 'the fish of Māui', officially North Island or Te Ika-a-Māui or historically New Ulster) is one of the two main islands of New Zealand, separated from the larger but less populous South Island by Cook Strait. With an area of 113,729 km² (43,911 sq mi),^[1] it is the world's 14th-largest island, constituting 43% of New Zealand's land area. It has a population of 4,077,800 (June 2024),^[2] which is 76% of New Zealand's residents,^[3] making it the most populous island in Polynesia and the 28th-most-populous island in the world.

Twelve main urban areas (half of them officially cities) are in the North Island. From north to south, they are Whangārei, Auckland, Hamilton, Tauranga, Rotorua, Gisborne, New Plymouth, Napier, Hastings, Whanganui, Palmerston North, and New Zealand's capital city Wellington, which is located at the south-west tip of the island.

Naming and usage

The island has been known in the international Anglosphere as the North Island for many years. The Māori name for it, Te Ika-a-Māui, also has official recognition but it remains seldom used by most residents.^[4] On some 19th-century maps, the North Island is named New Ulster (named after Ulster province in northern Ireland) which was also a province of New Zealand that included the North Island. In 2009 the New Zealand Geographic Board found that, along with the South Island, the North Island had no official name.^[5] After a public consultation, the board officially named it North Island, or the aforementioned Te Ika-a-Māui, in October 2013.^[6]

In prose, the two main islands of New Zealand are called the North Island and the South Island, with the definite article.^[7] It is also normal to use the preposition in rather than on, for example "Hamilton is in the North Island", "my mother lives in the North Island".^[8] Maps, headings, tables, and adjectival expressions use North Island without "the".

Māori mythology

According to Māori mythology, the North and South Islands of New Zealand arose through the actions of the demigod Māui. Māui and his brothers were fishing from their canoe (the South Island) when he caught a great fish and pulled it right up from the sea. While he was not looking, his brothers fought over the fish and chopped it up. This great fish became the North Island, and thus a Māori name for the North Island is Te Ika-a-Māui ("The Fish of Māui").^[9] The mountains and valleys are believed to have been formed as a result of Māui's brothers' hacking at the fish.

During Captain James Cook's voyage between 1769 and 1770, Tahitian navigator Tupaia accompanied the circumnavigation of New Zealand. The maps described the North Island as "Ea Heinom Auwe" and "Aeheinomowe", which recognises the "Fish of Māui" element. Names of certain tribes like Muaūpoko (mua upoko "front of the head") and Muriwhenua (muri whenua, "backland") also reflect the locations of their settlement in this "fish" as well as levels of seniority between tribes.^[10]

Another Māori name that was given to the North Island, but is now used less commonly, is Aotearoa. Use of Aotearoa to describe the North Island fell out of favour in the early 20th century, and it is now a collective Māori name for New Zealand as a whole.^[11]^[12]

Geography

During the Last Glacial Period when sea levels were over 100 metres lower than present day levels, the North and South islands were connected by a vast coastal plain which formed at the South Taranaki Bight.^[13] During this period, most of the North Island was covered in thorn scrubland and forest, while the modern-day Northland Peninsula was a subtropical rainforest.^[14] Sea levels began to rise 7,000 years ago, eventually separating the islands and linking the Cook Strait to the Tasman Sea.^[13]

Bays and coastal features

Lakes and rivers

Capes and peninsulas

Forests and national parks

Volcanology

Other

Demographics

The North Island has an estimated population of 4,077,800 as of June 2024.^[2]

The North Island had a population of 3,808,005 at the 2023 New Zealand census, an increase of 213,453 people (5.9%) since the 2018 census, and an increase of 570,957 people (17.6%) since the 2013 census. Of the total population, 733,893 people (19.3%) were aged under 15 years, 743,154 (19.5%) were 15 to 29, 1,721,427 (45.2%) were 30 to 64, and 609,534 (16.0%) were 65 or older.^[15]

Ever since the conclusion of the Otago gold rush in the 1860s, New Zealand's European population growth has experienced a steady 'Northern drift' as population centres in the North Island have grown faster than those of New Zealand's South Island. This population trend has continued into the twenty-first century, but at a much slower rate. While the North Island's population continues to grow faster than the South Island, this is solely due to the North Island having higher natural increase (i.e. births minus deaths) and international migration; since the late 1980s, the internal migration flow has been from the North Island to the South Island.^[16] In the year to June 2020, the North Island gained 21,950 people from natural increase and 62,710 people from international migration, while losing 3,570 people from internal migration.^[17]

Culture and identity

At the 2023 census, 63.1% of North Islanders identified as European (Pākehā), 19.8% as Māori, 10.6% as Pacific peoples, 19.3% as Asian, 1.9% as Middle Eastern/Latin American/African, and 1.1% as other ethnicities. Percentages add to more than 100% as people can identify with more than one ethnicity.^[15]

Māori form the majority in three districts of the North Island: Kawerau (63.2%), Ōpōtiki (66.2%) and Wairoa (68.5%). Europeans formed the plurality in the Auckland region (49.8%) and are the majority in the remaining 39 districts.^[15]

The proportion of North Islanders born overseas at the 2018 census were 29.3%. The most common foreign countries of birth were England (15.4% of overseas-born residents), Mainland China (11.3%), India (10.1%), South Africa (5.9%), Australia (5.5%) and Samoa (5.3%).^[18]

Cities and towns

Map of the North Island showing some of its cities

The North Island has a larger population than the South Island, with the country's largest city, Auckland, and the capital, Wellington, accounting for nearly half of it.

There are 30 urban areas in the North Island with a population of 10,000 or more:

Name	Population (June 2024)^[2]	% of island
Auckland	1,531,400	37.6%
Wellington	214,200	5.3%
Hamilton	192,000	4.7%
Tauranga	162,800	4.0%
Lower Hutt	114,500	2.8%
Palmerston North	83,100	2.0%
Napier	67,500	1.7%
Porirua	60,600	1.5%
Hibiscus Coast	67,800	1.7%
New Plymouth	60,100	1.5%
Rotorua	58,800	1.4%
Whangārei	56,800	1.4%
Hastings	52,200	1.3%
Upper Hutt	45,000	1.1%
Whanganui	42,500	1.0%
Gisborne	38,800	1.0%
Paraparaumu	30,300	0.7%
Pukekohe	28,000	0.7%
Taupō	27,000	0.7%
Masterton	23,200	0.6%
Cambridge	22,500	0.6%
Levin	20,100	0.5%
Feilding	18,250	0.4%
Whakatāne	16,650	0.4%
Havelock North	14,900	0.4%
Tokoroa	14,650	0.4%
Waikanae	13,150	0.3%
Te Awamutu	14,150	0.3%
Hāwera	10,550	0.3%
Te Puke	10,500	0.3%

Economy

The sub-national GDP of the North Island was estimated at NZ$ 282.355 billion in 2021 (78% of New Zealand's national GDP).^[19]

Governance

Regions

Nine local government regions cover the North Island and its adjacent islands and territorial waters.

Healthcare

Healthcare in the North Island is provided by fifteen District Health Boards (DHBs). Organised around geographical areas of varying population sizes, they are not coterminous with the Local Government Regions.

District Health Board	District	Population
Northland District Health Board (Te Poari Hauora a Rohe o te Tai Tokerau)	Whangarei District, Far North District, Kaipara District	159,160
Waitematā District Health Board (Te Wai Awhina)	Auckland Region	525,000
Auckland District Health Board (Te Toka Tumai)		468,000
Counties Manukau District Health Board (A Community Partnership)		490,610
Waikato District Health Board (Waikato DHB)	Hamilton City, Hauraki District, Matamata-Piako District, Ōtorohanga District, part of Ruapehu District, South Waikato, Thames-Coromandel District, Waikato District, Waipa District, Waitomo District	372,865
Bay of Plenty District Health Board (Hauora a Toi)	Tauranga City, Western Bay of Plenty District, Whakatāne District, Kawerau District, Ōpōtiki District	214,170
Lakes District Health Board (Lakes DHB)	Rotorua Lakes, Taupō District	102,000
Tairāwhiti District Health Board (Te Mana Hauora o te Tairawhiti)	Gisborne District	44,499
Hawke's Bay District Health Board (Whakawateatia)	Napier City, Hastings District, Wairoa District, Central Hawke's Bay District, Chatham Islands	155,000
Taranaki District Health Board (Taranaki DHB)	New Plymouth District, Stratford District, South Taranaki District	104,280
Whanganui District Health Board (Whanganui DHB)	Whanganui District, Rangitikei District, part of Ruapehu District	62,210
Mid Central District Health Board (Te Pae Hauora o Ruahine o Tararua)	Palmerston North City, Horowhenua District, Manawatū District, Tararua District, part of Kāpiti Coast District	158,838
Wairarapa District Health Board (Te Poari Hauora a Rohe o Wairarapa)	South Wairarapa District, Carterton District, Masterton District	38,200
Hutt Valley District Health Board (Healthy People)	Lower Hutt, Upper Hutt	145,000
Capital and Coast District Health Board (Upoko ki te Uru Hauora)	Wellington City, Porirua City, part of Kāpiti Coast District	270,000