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Porirua City had a higher proportion of pre-schoolers and a lower proportion of people at post retirement age than Wellington Region in 2018.
The Age Structure of the population is the most widely used component of the Census. It is an indicator of an area’s residential role and function and how it is likely to change in the future. Porirua City's age demographics are indicative of the area’s era of settlement and provide key insights into the level of demand for services and facilities (as most services and facilities are age-specific).
Service age groups divide the population into age categories that reflect typical life-stages. They indicate the level of demand for services that target people at different stages in life and how that demand is changing.
'When were you born?'
|Age structure - Service age groups|
|Porirua City - Total persons||2018||2013||Change|
|Service age group (years)||Number||%||Wellington Region %||Number||%||Wellington Region %||2013 to 2018|
|Babies and Pre-schoolers (0 to 4)||4,404||7.8||5.9||4,431||8.6||6.7||-27|
|Primary Schoolers (5 to 11)||6,573||11.6||9.0||5,772||11.2||9.0||+801|
|Secondary Schoolers (12 to 17)||4,878||8.6||7.3||4,833||9.3||7.8||+45|
|Tertiary education and independence (18 to 24)||4,950||8.8||10.2||4,776||9.2||10.6||+174|
|Young workforce (25 to 34)||7,371||13.0||14.5||5,901||11.4||13.1||+1,470|
|Parents and homebuilders (35 to 49)||11,757||20.8||20.4||11,451||22.1||21.7||+306|
|Older workers and pre-retirees (50 to 59)||7,179||12.7||13.1||6,579||12.7||12.9||+600|
|Empty nesters and retirees (60 to 69)||5,265||9.3||9.8||4,698||9.1||9.5||+567|
|Seniors (70 to 84)||3,624||6.4||8.0||2,847||5.5||7.3||+777|
|Elderly aged (85 and over)||558||1.0||1.7||432||0.8||1.6||+126|
Analysis of the service age groups of Porirua City in 2018 compared to Wellington Region shows that there was a higher proportion of people in the younger age groups (0 to 17 years) and a lower proportion of people in the older age groups (60+ years).
Overall, 28.0% of the population was aged between 0 and 17, and 16.7% were aged 60 years and over, compared with 22.2% and 19.5% respectively for Wellington Region.
The major differences between the age structure of Porirua City and Wellington Region were:
From 2013 to 2018, Porirua City's population increased by 4,839 people (9.4%). This represents an average annual population change of 1.8% per year over the period.
The largest changes in the age structure in this area between 2013 and 2018 were in the age groups:
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