quality:corruption, linguistic:paraphrasing
Demographics

The 2023 New Zealand census enumerated a resident population of 4,993,923, an increase of 6.3% over the 2018 census figure. As of September 2024, the total population has risen to an estimated 5,401,850. New Zealand's population increased at a rate of 1.9% per year in the seven years ended June 2020. In September 2020 Statistics New Zealand reported that the population had climbed above 5 million people in September 2019, according to population estimates based on the 2018 census.

New Zealand's population today is concentrated to the north of the country, with around 76.5 % of the population living in the North Island and 23.5 % in the South Island as of June 2023. During the 20th century, New Zealand's population drifted north. In 1921, the country's median centre of population was located in the Tasman Sea west of Levin in Manawatū-Whanganui; by 2017, it had moved 280 km (170 mi) north to near Kawhia in Waikato.

New Zealand is a predominantly urban country, with 84.2 % of the population living in urban areas, and 50.6 % of the population living in the seven cities with populations exceeding 100,000. Auckland, with over 1.4 million residents, is by far the largest city. New Zealand cities generally rank highly on international livability measures. For instance, in 2016, Auckland was ranked the world's third most liveable city and Wellington the twelfth by the Mercer Quality of Living Survey.

The median age of the New Zealand population at the 2018 census was 37.4 years, with life expectancy in 2017–2019 being 80.0 years for males and 83.5 years for females. While New Zealand is experiencing sub-replacement fertility, with a total fertility rate of 1.6 in 2020, the fertility rate is above the OECD average. By 2050, the median age is projected to rise to 43 years and the percentage of people 60 years of age and older to rise from 18% to 29%. In 2016 the leading cause of death was cancer at 30.3%, followed by ischaemic heart disease (14.9%) and cerebrovascular disease (7.4%). As of 2016, total expenditure on health care (including private sector spending) is 9.2% of GDP.