Porirua CityPopulation forecast
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Porirua City

Population and age structure

Between 2013 and 2028, the age structure forecasts for Porirua City indicate a 21.0% increase in population under working age, a 67.9% increase in population of retirement age, and a 24.2% increase 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 City 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 City - Total persons201320282043Change between 2013 and 2043
Age group (years)Number%Number%Number%Number
0 to 4 4,6308.65,3727.86,0257.3+1,396
5 to 9 4,3218.05,3447.86,2317.5+1,910
10 to 14 4,1507.75,1327.56,1087.4+1,958
15 to 19 4,0207.54,8467.15,6626.8+1,641
20 to 24 3,5106.53,9615.84,6975.7+1,187
25 to 29 2,9325.53,8345.64,2225.1+1,290
30 to 34 3,1895.94,3316.34,7155.7+1,526
35 to 39 3,7206.94,8467.15,4996.6+1,780
40 to 44 4,1707.84,9307.25,9687.2+1,798
45 to 49 3,8497.24,6276.75,9727.2+2,123
50 to 54 3,7006.94,3346.35,5186.7+1,818
55 to 59 3,1715.94,1346.04,9506.0+1,779
60 to 64 2,7205.13,6005.24,3605.3+1,640
65 to 69 2,1704.03,1684.63,8364.6+1,666
70 to 74 1,5102.82,5323.73,3614.1+1,851
75 to 79 8501.61,9462.82,7333.3+1,883
80 to 84 5901.11,1271.61,7772.1+1,187
85 and over4990.96601.01,1681.4+668
Total persons53,700100.068,723100.082,803100.0+29,102

Population and household forecasts, 2013 to 2043, prepared by .id , the population experts, February 2019.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2043: 1,168 Forecast persons aged 80-84,  2043: 1,777 Forecast persons aged 75-79,  2043: 2,733 Forecast persons aged 70-74,  2043: 3,361 Forecast persons aged 65-69,  2043: 3,836 Forecast persons aged 60-64,  2043: 4,360 Forecast persons aged 55-59,  2043: 4,950 Forecast persons aged 50-54,  2043: 5,518 Forecast persons aged 45-49,  2043: 5,972 Forecast persons aged 40-44,  2043: 5,968 Forecast persons aged 35-39,  2043: 5,499 Forecast persons aged 30-34,  2043: 4,715 Forecast persons aged 25-29,  2043: 4,222 Forecast persons aged 20-24,  2043: 4,697 Forecast persons aged 15-19,  2043: 5,662 Forecast persons aged 10-14,  2043: 6,108 Forecast persons aged 5-9,  2043: 6,231 Forecast persons aged 0-4,  2043: 6,025 Forecast persons aged 85+,  2028: 660 Forecast persons aged 80-84,  2028: 1,127 Forecast persons aged 75-79,  2028: 1,946 Forecast persons aged 70-74,  2028: 2,532 Forecast persons aged 65-69,  2028: 3,168 Forecast persons aged 60-64,  2028: 3,600 Forecast persons aged 55-59,  2028: 4,134 Forecast persons aged 50-54,  2028: 4,334 Forecast persons aged 45-49,  2028: 4,627 Forecast persons aged 40-44,  2028: 4,930 Forecast persons aged 35-39,  2028: 4,846 Forecast persons aged 30-34,  2028: 4,331 Forecast persons aged 25-29,  2028: 3,834 Forecast persons aged 20-24,  2028: 3,961 Forecast persons aged 15-19,  2028: 4,846 Forecast persons aged 10-14,  2028: 5,132 Forecast persons aged 5-9,  2028: 5,344 Forecast persons aged 0-4,  2028: 5,372 Forecast persons aged 85+,  2013: 499 Forecast persons aged 80-84,  2013: 590 Forecast persons aged 75-79,  2013: 850 Forecast persons aged 70-74,  2013: 1,510 Forecast persons aged 65-69,  2013: 2,170 Forecast persons aged 60-64,  2013: 2,720 Forecast persons aged 55-59,  2013: 3,171 Forecast persons aged 50-54,  2013: 3,700 Forecast persons aged 45-49,  2013: 3,849 Forecast persons aged 40-44,  2013: 4,170 Forecast persons aged 35-39,  2013: 3,720 Forecast persons aged 30-34,  2013: 3,189 Forecast persons aged 25-29,  2013: 2,932 Forecast persons aged 20-24,  2013: 3,510 Forecast persons aged 15-19,  2013: 4,020 Forecast persons aged 10-14,  2013: 4,150 Forecast persons aged 5-9,  2013: 4,321 Forecast persons aged 0-4,  2013: 4,630
Population and household forecasts, 2013 to 2043, prepared by .id the population experts, February 2019.
Forecast change in age structure - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2028 to 2043: 507 Forecast persons aged 80-84,  2028 to 2043: 650 Forecast persons aged 75-79,  2028 to 2043: 787 Forecast persons aged 70-74,  2028 to 2043: 829 Forecast persons aged 65-69,  2028 to 2043: 668 Forecast persons aged 60-64,  2028 to 2043: 759 Forecast persons aged 55-59,  2028 to 2043: 816 Forecast persons aged 50-54,  2028 to 2043: 1,184 Forecast persons aged 45-49,  2028 to 2043: 1,346 Forecast persons aged 40-44,  2028 to 2043: 1,039 Forecast persons aged 35-39,  2028 to 2043: 654 Forecast persons aged 30-34,  2028 to 2043: 384 Forecast persons aged 25-29,  2028 to 2043: 388 Forecast persons aged 20-24,  2028 to 2043: 736 Forecast persons aged 15-19,  2028 to 2043: 816 Forecast persons aged 10-14,  2028 to 2043: 976 Forecast persons aged 5-9,  2028 to 2043: 887 Forecast persons aged 0-4,  2028 to 2043: 653 Forecast persons aged 85+,  2013 to 2028: 161 Forecast persons aged 80-84,  2013 to 2028: 537 Forecast persons aged 75-79,  2013 to 2028: 1,096 Forecast persons aged 70-74,  2013 to 2028: 1,023 Forecast persons aged 65-69,  2013 to 2028: 998 Forecast persons aged 60-64,  2013 to 2028: 880 Forecast persons aged 55-59,  2013 to 2028: 964 Forecast persons aged 50-54,  2013 to 2028: 634 Forecast persons aged 45-49,  2013 to 2028: 777 Forecast persons aged 40-44,  2013 to 2028: 760 Forecast persons aged 35-39,  2013 to 2028: 1,126 Forecast persons aged 30-34,  2013 to 2028: 1,142 Forecast persons aged 25-29,  2013 to 2028: 902 Forecast persons aged 20-24,  2013 to 2028: 451 Forecast persons aged 15-19,  2013 to 2028: 826 Forecast persons aged 10-14,  2013 to 2028: 982 Forecast persons aged 5-9,  2013 to 2028: 1,023 Forecast persons aged 0-4,  2013 to 2028: 742
Population and household forecasts, 2013 to 2043, prepared by .id the population experts, February 2019.

Key findings

In 2013, the dominant age structure for persons in Porirua City was ages 0 to 4 , which accounted for 8.6% of the total persons.

The largest increase in persons between 2013 and 2028 is forecast to be in ages 30 to 34 , which is expected to increase by 1,142 and account for 6.3% of the total persons.

The largest 5 year age group in 2028 is 0 to 4 years, with a total of 5,372 persons.

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