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City of OnkaparingaCommunity profile

Happy Valley

Five year age groups

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In 2021, the largest age group in Happy Valley was 35 to 39 year olds. The group that changed the most since 2001 was 65 to 69 year olds, increasing by 537 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 (Enumerated)20212001Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %2001 to 2021
0 to 46285.65.46946.46.7-66
5 to 96195.66.38127.47.7-194
10 to 146756.16.38788.07.8-204
15 to 196716.05.91,0269.48.0-355
20 to 245404.95.67506.96.3-210
25 to 295955.35.96756.26.3-81
30 to 347166.46.37476.87.0-32
35 to 397596.86.78447.77.6-86
40 to 447086.46.29728.98.1-265
45 to 496936.26.41,0689.87.8-376
50 to 546696.06.69528.77.6-284
55 to 596435.86.44544.25.1+188
60 to 647386.66.32422.23.6+495
65 to 697556.85.82182.02.9+537
70 to 747016.35.62292.12.8+472
75 to 794123.73.81781.62.2+233
80 to 842972.72.31101.01.4+187
85 and over3072.82.2660.61.0+240
Total population11,126100.0100.010,925100.0100.0+201
Source: Australian Bureau of Statistics, Census of Population and Housing 2001 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

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, 17.3% of the population was aged between 0 and 15, and 22.2% were aged 65 years and over, compared with 18.0% and 19.7% 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 (6.8% compared to 5.8%)
  • A larger percentage of persons aged 70 to 74 (6.3% compared to 5.6%)
  • A smaller percentage of persons aged 20 to 24 (4.9% compared to 5.6%)
  • A smaller percentage of persons aged 5 to 9 (5.6% compared to 6.3%)

Emerging groups

From 2001 to 2021, Happy Valley's population increased by 201 people (1.8%). This represents an average annual population change of 0.09% 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 (+537 persons)
  • 60 to 64 (+495 persons)
  • 70 to 74 (+472 persons)
  • 45 to 49 (-376 persons)

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