Powered by .id (informed decisions) for City of Port Adelaide Enfield
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LEARN MORE ABOUT .idBetween 2021 and 2031, the age structure forecasts for Northgate - Oakden - Gilles Plains indicate a 3.8% decrease in population under working age, a 24.5% increase in population of retirement age, and a 17.4% 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 City of Port Adelaide Enfield 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 | |||||||
|---|---|---|---|---|---|---|---|
| Northgate - Oakden - Gilles Plains - Total persons | 2021 | 2031 | 2046 | Change between 2021 and 2046 | |||
| Age group (years) | Number | % | Number | % | Number | % | Number |
| 0 to 4 | 1,428 | 6.2 | 1,327 | 5.0 | 1,297 | 4.6 | -131 |
| 5 to 9 | 1,412 | 6.1 | 1,351 | 5.1 | 1,279 | 4.6 | -133 |
| 10 to 14 | 1,239 | 5.4 | 1,245 | 4.7 | 1,144 | 4.1 | -95 |
| 15 to 19 | 1,074 | 4.7 | 1,174 | 4.4 | 1,072 | 3.8 | -2 |
| 20 to 24 | 1,670 | 7.2 | 1,556 | 5.9 | 1,447 | 5.2 | -223 |
| 25 to 29 | 2,067 | 9.0 | 1,890 | 7.2 | 1,888 | 6.7 | -179 |
| 30 to 34 | 2,224 | 9.6 | 2,435 | 9.2 | 2,424 | 8.6 | +200 |
| 35 to 39 | 2,251 | 9.8 | 2,753 | 10.4 | 2,666 | 9.5 | +415 |
| 40 to 44 | 1,737 | 7.5 | 2,615 | 9.9 | 2,477 | 8.8 | +740 |
| 45 to 49 | 1,429 | 6.2 | 2,318 | 8.8 | 2,360 | 8.4 | +931 |
| 50 to 54 | 1,265 | 5.5 | 1,491 | 5.6 | 2,009 | 7.2 | +744 |
| 55 to 59 | 1,122 | 4.9 | 1,162 | 4.4 | 1,714 | 6.1 | +592 |
| 60 to 64 | 950 | 4.1 | 1,150 | 4.4 | 1,507 | 5.4 | +557 |
| 65 to 69 | 895 | 3.9 | 1,081 | 4.1 | 1,170 | 4.2 | +275 |
| 70 to 74 | 851 | 3.7 | 903 | 3.4 | 981 | 3.5 | +130 |
| 75 to 79 | 664 | 2.9 | 799 | 3.0 | 991 | 3.5 | +327 |
| 80 to 84 | 366 | 1.6 | 665 | 2.5 | 803 | 2.9 | +437 |
| 85 and over | 404 | 1.8 | 512 | 1.9 | 800 | 2.9 | +396 |
| Total persons | 23,048 | 100.0 | 26,430 | 100.0 | 28,030 | 100.0 | +4,982 |
Key findings
In 2021, the dominant age structure for persons in Northgate - Oakden - Gilles Plains was ages 35 to 39, which accounted for 9.8% of the total persons.
The largest increase in persons between 2021 and 2031 is forecast to be in ages 45 to 49, which is expected to increase by 889 and account for 8.8% of the total persons.
The largest 5 year age group in 2031 is 35 to 39 years, with a total of 2,753 persons.
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