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Shire of Serpentine JarrahdaleCommunity profile

Serpentine area

Five year age groups

In 2021, the largest age group in Serpentine area was 50 to 54 year olds. The group that changed the most since 2016 was 70 to 74 year olds, increasing by 55 people.

The Age Structure of Serpentine area provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Serpentine area'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 Serpentine area'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
Serpentine area - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%Shire of Serpentine Jarrahdale %Number%Shire of Serpentine Jarrahdale %2016 to 2021
0 to 41366.58.61065.78.7+29
5 to 91276.08.61276.88.2-1
10 to 141396.67.71558.37.0-17
15 to 191527.26.11397.46.3+12
20 to 241165.55.4904.86.7+25
25 to 291095.26.8914.98.2+17
30 to 341235.98.4834.58.5+39
35 to 391245.98.11105.97.1+13
40 to 441125.36.71427.66.8-31
45 to 491627.76.11769.47.1-14
50 to 541899.06.51869.96.6+2
55 to 591698.05.81377.35.5+31
60 to 641456.94.7955.14.3+50
65 to 691095.23.61035.53.7+6
70 to 741115.33.0563.02.3+55
75 to 79391.91.8492.61.6-11
80 to 84190.91.1211.10.8-2
85 and over201.00.840.30.7+15
Total population2,101100.0100.01,880100.0100.0+221
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 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 Serpentine area in 2021 compared to the Shire of Serpentine Jarrahdale 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, 19.1% of the population was aged between 0 and 15, and 14.2% were aged 65 years and over, compared with 24.9% and 10.3% respectively for the Shire of Serpentine Jarrahdale.

The major differences between the age structure of Serpentine area and the Shire of Serpentine Jarrahdale were:

  • A larger percentage of persons aged 50 to 54 (9.0% compared to 6.5%)
  • A larger percentage of persons aged 70 to 74 (5.3% compared to 3.0%)
  • A smaller percentage of persons aged 30 to 34 (5.9% compared to 8.4%)
  • A smaller percentage of persons aged 5 to 9 (6.0% compared to 8.6%)

Emerging groups

From 2016 to 2021, Serpentine area's population increased by 221 people (11.8%). This represents an average annual population change of 2.25% per year over the period.

The largest changes in age structure in this area between 2016 and 2021 were in the age groups:

  • 70 to 74 (+55 persons)
  • 60 to 64 (+50 persons)

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