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 19.9% increase in population under working age, a 67.4% increase in population of retirement age, and a 23.2% 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 44,6308.65,3247.85,9077.3+1,277
5 to 94,3218.05,2957.86,0647.5+1,743
10 to 144,1507.75,0877.55,9127.3+1,762
15 to 194,0207.54,8197.15,4786.8+1,458
20 to 243,5106.53,9405.84,5845.7+1,073
25 to 292,9325.53,8015.64,1485.2+1,217
30 to 343,1895.94,2846.34,6205.7+1,431
35 to 393,7206.94,7867.05,3466.6+1,626
40 to 444,1707.84,8687.15,7547.1+1,584
45 to 493,8497.24,5846.75,7147.1+1,865
50 to 543,7006.94,3046.35,2946.6+1,594
55 to 593,1715.94,1126.04,7795.9+1,608
60 to 642,7205.13,5855.34,2365.3+1,516
65 to 692,1704.03,1594.63,7504.7+1,580
70 to 741,5102.82,5273.73,3034.1+1,793
75 to 798501.61,9422.82,6963.3+1,846
80 to 845901.11,1221.61,7552.2+1,165
85 and over4990.96561.01,1501.4+650
Total persons53,700100.068,195100.080,489100.0+26,789

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

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2043: 1,150 Forecast persons aged 80-84,  2043: 1,755 Forecast persons aged 75-79,  2043: 2,696 Forecast persons aged 70-74,  2043: 3,303 Forecast persons aged 65-69,  2043: 3,750 Forecast persons aged 60-64,  2043: 4,236 Forecast persons aged 55-59,  2043: 4,779 Forecast persons aged 50-54,  2043: 5,294 Forecast persons aged 45-49,  2043: 5,714 Forecast persons aged 40-44,  2043: 5,754 Forecast persons aged 35-39,  2043: 5,346 Forecast persons aged 30-34,  2043: 4,620 Forecast persons aged 25-29,  2043: 4,148 Forecast persons aged 20-24,  2043: 4,584 Forecast persons aged 15-19,  2043: 5,478 Forecast persons aged 10-14,  2043: 5,912 Forecast persons aged 5-9,  2043: 6,064 Forecast persons aged 0-4,  2043: 5,907 Forecast persons aged 85+,  2028: 656 Forecast persons aged 80-84,  2028: 1,122 Forecast persons aged 75-79,  2028: 1,942 Forecast persons aged 70-74,  2028: 2,527 Forecast persons aged 65-69,  2028: 3,159 Forecast persons aged 60-64,  2028: 3,585 Forecast persons aged 55-59,  2028: 4,112 Forecast persons aged 50-54,  2028: 4,304 Forecast persons aged 45-49,  2028: 4,584 Forecast persons aged 40-44,  2028: 4,868 Forecast persons aged 35-39,  2028: 4,786 Forecast persons aged 30-34,  2028: 4,284 Forecast persons aged 25-29,  2028: 3,801 Forecast persons aged 20-24,  2028: 3,940 Forecast persons aged 15-19,  2028: 4,819 Forecast persons aged 10-14,  2028: 5,087 Forecast persons aged 5-9,  2028: 5,295 Forecast persons aged 0-4,  2028: 5,324 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, March 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: 494 Forecast persons aged 80-84,  2028 to 2043: 633 Forecast persons aged 75-79,  2028 to 2043: 754 Forecast persons aged 70-74,  2028 to 2043: 776 Forecast persons aged 65-69,  2028 to 2043: 591 Forecast persons aged 60-64,  2028 to 2043: 652 Forecast persons aged 55-59,  2028 to 2043: 667 Forecast persons aged 50-54,  2028 to 2043: 991 Forecast persons aged 45-49,  2028 to 2043: 1,130 Forecast persons aged 40-44,  2028 to 2043: 886 Forecast persons aged 35-39,  2028 to 2043: 560 Forecast persons aged 30-34,  2028 to 2043: 336 Forecast persons aged 25-29,  2028 to 2043: 347 Forecast persons aged 20-24,  2028 to 2043: 643 Forecast persons aged 15-19,  2028 to 2043: 659 Forecast persons aged 10-14,  2028 to 2043: 824 Forecast persons aged 5-9,  2028 to 2043: 769 Forecast persons aged 0-4,  2028 to 2043: 583 Forecast persons aged 85+,  2013 to 2028: 156 Forecast persons aged 80-84,  2013 to 2028: 532 Forecast persons aged 75-79,  2013 to 2028: 1,092 Forecast persons aged 70-74,  2013 to 2028: 1,017 Forecast persons aged 65-69,  2013 to 2028: 989 Forecast persons aged 60-64,  2013 to 2028: 865 Forecast persons aged 55-59,  2013 to 2028: 941 Forecast persons aged 50-54,  2013 to 2028: 604 Forecast persons aged 45-49,  2013 to 2028: 734 Forecast persons aged 40-44,  2013 to 2028: 698 Forecast persons aged 35-39,  2013 to 2028: 1,067 Forecast persons aged 30-34,  2013 to 2028: 1,095 Forecast persons aged 25-29,  2013 to 2028: 869 Forecast persons aged 20-24,  2013 to 2028: 430 Forecast persons aged 15-19,  2013 to 2028: 799 Forecast persons aged 10-14,  2013 to 2028: 938 Forecast persons aged 5-9,  2013 to 2028: 974 Forecast persons aged 0-4,  2013 to 2028: 694
Population and household forecasts, 2013 to 2043, prepared by .id the population experts, March 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 1,095 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 5,324 persons.

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