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National Population Estimates: March 2012 quarter
Embargoed until 10:45am  –  14 May 2012
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 census data and on births, deaths, and migration since the census.

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

More definitions

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 temporarily overseas on census night. The population counts published from the census are not comparable with the estimated resident population. 

Estimated de facto population: the estimated de facto population of New Zealand includes all people present in New Zealand and counted by the census (census night population count). This estimate includes visitors from overseas who are counted on census night, but excludes New Zealand residents who are temporarily overseas.

Estimated resident population: an estimate of all people who usually live in New Zealand on a given date. Visitors from overseas are excluded.

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 will be in or away from New Zealand, and where they last lived or will live for the next 12 months or more.

  • International migrant arrivals: people from overseas arriving 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 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.


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