Life expectancy is the average age of death for a group. This is not the same as lifespan (the maximum age a person can live).
Life expectancy at birth is the average number of years a newborn is expected to live if mortality patterns at the time of birth remain constant.
From the dataset New Zealand Life Tables: Subnational period life tables 2022–2024, this data was extracted:
Rows: 2-153,721
Column: 9
Provided: 11,520 data points
Dataset originally released on:
July 30, 2025
About this dataset
Life tables are a basic demographic tool for analysing mortality and survival. They are a tabular numerical representation of death and survivorship rates at each age of life.
The life tables are based on death rates during a specific period, and such tables are called period, current, or cross-sectional life tables. Period life tables are based on the age-specific death rates of the population during a specific period of time. Life expectancy is a summary measure of those age-specific death rates, but it is a hypothetical life expectancy assuming people experience the age-specific death rates of that period over their lifetime.
In contrast, cohort or generation life tables are based on the age-specific death rates of people over their lifetime. These tables give the actual life expectancy of a particular cohort (eg all people born in the year 1900), although they require data over many years, theoretically until the death of the last survivor.
Purpose of collection
Life tables are widely used for descriptive and analytical purposes in demography, public health, epidemiology, population geography, biology and many other branches of science. For example, life tables are widely used for the purpose of calculating premiums for life insurance and annuities.