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National Population Estimates: At 30 June 2015
Embargoed until 10:45am  –  14 August 2015
Definitions

About national population estimates

National population estimates give the best available measure of the size and age-sex structure of the population usually living in New Zealand. Estimates of the resident population are based on the latest available census adjusted for residents who are temporarily overseas, net census undercount, and data on births, deaths, and migration between census night and the estimate.

National population estimates are published quarterly and subnational population estimates are published annually.

More definitions

International migration: migration into or out of New Zealand. International migration statistics are based on 'permanent and long-term' migration statistics. These are primarily determined by passengers' responses on arrival and departure cards – about how long they intend to be in or away from New Zealand, and where they last lived or intend to live for 12 months or more.

  • International migrant arrivals: people from overseas arriving intending to live in New Zealand for 12 months or more (including permanently), and New Zealanders returning after an absence of 12 months or more. (Referred to as permanent and long-term arrivals in international migration statistics.)
  • International migrant departures: New Zealanders departing for an intended absence of 12 months or more (including permanently), and people from overseas departing after a stay of 12 months or more in New Zealand. (Referred to as permanent and long-term departures in international migration statistics.)
  • Net migration: the difference between the number of people who have moved to, and departed from, New Zealand. At the national level this is equivalent to international migrant arrivals minus international migrant departures.

Median age: half the population is younger, and half older, than this age.

Natural increase or decrease: natural increase is an excess of births over deaths. Natural decrease is an excess of deaths over births.

Population measures: Statistics New Zealand commonly produces three population measures, the census night population count, census usually resident population count, and estimated resident population:

  • Census night population count: a count of all people present in New Zealand on a given census night. This count includes visitors from overseas who are counted on census night, but excludes residents who are temporarily overseas on census night.
  • Census usually resident population count: a count of all people who usually live in New Zealand and are present in New Zealand on a given census night. This count excludes visitors from overseas and residents who are temporarily overseas on census night.
  • Estimated resident population: an estimate of all people who usually live in New Zealand at a given date. This estimate includes all residents present in New Zealand and counted by the census (census usually resident population count), residents who are temporarily overseas (who are not included in the census), an adjustment for residents missed or counted more than once by the census (net census undercount), and births, deaths and migration between census night and the date of the estimate. Visitors from overseas are excluded.
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