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Porirua CityPopulation forecast

Porirua East-Ranui Heights

Population and age structure

Between 2016 and 2028, the age structure forecasts for Porirua East-Ranui Heights indicate a 1.3% decrease in population under working age, a 58.2% increase in population of retirement age, and a 0.6% decrease in population of working age.

Knowledge of how the age structure of the population is changing is essential for planning age-based facilities and services, such as child care, recreation and aged care.

The forecast age groups of Porirua East-Ranui Heights is a function of the current age of the population (people aging each year, being born and dying) as well as the age of people migrating into and out of the area. This in turn is driven by location (fringe, city centre, regional or rural) the existing housing stock (separate dwellings, medium or high density), the amount and type of new residential development (same as existing stock, or diversifying) and where the area is in a cycle of change. We call this the area’s residential role and function. You can learn more about this in the section household and suburb life cycles.

Forecast age structure - 5 year age groups
Porirua East-Ranui Heights - Total persons201620282048Change between 2016 and 2048
Age group (years)Number%Number%Number%Number
0 to 42697.72707.33667.4+98
5 to 92386.82196.03006.1+62
10 to 142126.12216.02895.9+77
15 to 192647.62506.83276.6+63
20 to 242808.02376.43166.4+36
25 to 292146.12546.93176.4+103
30 to 342416.92667.23336.8+93
35 to 392196.32296.23166.4+97
40 to 442386.82195.93066.2+68
45 to 492737.92145.82966.0+23
50 to 542356.82266.12815.7+46
55 to 592126.12396.52675.4+55
60 to 642005.72276.22735.5+73
65 to 691614.62105.72665.4+105
70 to 741043.01634.42394.8+135
75 to 79641.81313.62164.4+152
80 to 84320.9631.71312.7+99
85 and over240.7421.1861.7+62
Total persons3,479100.03,681100.04,926100.0+1,447
Population and household forecasts, 2013 to 2048, prepared by .id , the population experts, November 2019.

Key findings

In 2016, the dominant age structure for persons in Porirua East-Ranui Heights was ages 20 to 24, which accounted for 8.0% of the total persons.

The largest increase in persons between 2016 and 2028 is forecast to be in ages 75 to 79, which is expected to increase by 67 and account for 3.6% of the total persons.

The largest 5 year age group in 2028 is 0 to 4 years, with a total of 270 persons.

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