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LEARN MORE ABOUT .idIn 2021, the largest age group in Happy Valley was 65 to 69 year olds. The group that changed the most since 2001 was 65 to 69 year olds, increasing by 579 people.
The Age Structure of Happy Valley provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Happy Valley's residential role and function and how it is likely to change in the future.
Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.
To get a more complete picture Happy Valley's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.
Q:
Derived from the Census question:
'What is the person's date of birth or age?'
| Age structure - Five year age groups | |||||||
|---|---|---|---|---|---|---|---|
| Happy Valley - Total persons (Usual residence) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | City of Onkaparinga % | Number | % | City of Onkaparinga % | 2001 to 2021 |
| 0 to 4 | 634 | 5.5 | 5.4 | 706 | 6.4 | 6.6 | -72 |
| 5 to 9 | 628 | 5.5 | 6.2 | 809 | 7.3 | 7.6 | -182 |
| 10 to 14 | 680 | 5.9 | 6.2 | 877 | 7.9 | 7.8 | -198 |
| 15 to 19 | 674 | 5.9 | 5.8 | 1,019 | 9.2 | 7.9 | -345 |
| 20 to 24 | 546 | 4.8 | 5.6 | 760 | 6.9 | 6.2 | -214 |
| 25 to 29 | 630 | 5.5 | 6.0 | 665 | 6.0 | 6.2 | -36 |
| 30 to 34 | 727 | 6.4 | 6.3 | 785 | 7.1 | 7.0 | -58 |
| 35 to 39 | 788 | 6.9 | 6.7 | 854 | 7.7 | 7.5 | -67 |
| 40 to 44 | 726 | 6.4 | 6.1 | 991 | 9.0 | 8.1 | -266 |
| 45 to 49 | 709 | 6.2 | 6.4 | 1,088 | 9.8 | 7.9 | -380 |
| 50 to 54 | 683 | 6.0 | 6.6 | 974 | 8.8 | 7.7 | -291 |
| 55 to 59 | 658 | 5.8 | 6.5 | 489 | 4.4 | 5.2 | +169 |
| 60 to 64 | 757 | 6.6 | 6.3 | 219 | 2.0 | 3.7 | +538 |
| 65 to 69 | 810 | 7.1 | 5.9 | 230 | 2.1 | 3.0 | +579 |
| 70 to 74 | 736 | 6.4 | 5.7 | 203 | 1.8 | 2.9 | +532 |
| 75 to 79 | 423 | 3.7 | 3.8 | 207 | 1.9 | 2.3 | +216 |
| 80 to 84 | 302 | 2.6 | 2.3 | 116 | 1.1 | 1.4 | +186 |
| 85 and over | 318 | 2.8 | 2.2 | 54 | 0.5 | 1.0 | +263 |
| Total population | 11,429 | 100.0 | 100.0 | 11,054 | 100.0 | 100.0 | +374 |
Dominant groups
Analysis of the five year age groups of Happy Valley in 2021 compared to the City of Onkaparinga shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).
Overall, 17.0% of the population was aged between 0 and 15, and 22.7% were aged 65 years and over, compared with 17.7% and 19.9% respectively for the City of Onkaparinga.
The major differences between the age structure of Happy Valley and the City of Onkaparinga were:
- A larger percentage of persons aged 65 to 69 (7.1% compared to 5.9%)
- A larger percentage of persons aged 70 to 74 (6.4% compared to 5.7%)
- A smaller percentage of persons aged 20 to 24 (4.8% compared to 5.6%)
- A smaller percentage of persons aged 55 to 59 (5.8% compared to 6.5%)
Emerging groups
From 2001 to 2021, Happy Valley's population increased by 375 people (3.4%). This represents an average annual population change of 0.17% per year over the period.
The largest changes in age structure in this area between 2001 and 2021 were in the age groups:
- 65 to 69 (+579 persons)
- 60 to 64 (+538 persons)
- 70 to 74 (+532 persons)
- 45 to 49 (-380 persons)
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