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City of KnoxCommunity profile

Wantirna South

Five year age groups

In 2021, the largest age group in Wantirna South was 35 to 39 year olds. The group that changed the most since 2011 was 65 to 69 year olds, increasing by 531 people.

The Age Structure of Wantirna South provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Wantirna South'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 Wantirna South'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
Wantirna South - Total persons (Enumerated)20212011Change
Five year age groups (years)Number%City of Knox %Number%City of Knox %2011 to 2021
0 to 49794.75.37394.26.0+240
5 to 91,1585.65.99185.36.0+240
10 to 141,1645.65.91,0706.16.6+94
15 to 191,2306.05.91,4548.37.3-224
20 to 241,2866.26.11,4628.46.9-177
25 to 291,1355.56.09225.36.3+213
30 to 341,3096.36.78084.66.4+501
35 to 391,4126.87.29205.37.0+492
40 to 441,3766.76.91,1056.37.5+271
45 to 491,2706.26.71,2767.37.6-7
50 to 541,3326.56.81,5689.07.4-236
55 to 591,2946.36.71,3487.76.6-55
60 to 641,4066.86.21,0746.25.8+331
65 to 691,2556.15.37244.14.0+531
70 to 741,0194.94.64912.82.9+527
75 to 797213.53.25163.02.2+205
80 to 845552.72.45012.91.7+53
85 and over7423.62.35513.21.7+191
Total population20,643100.0100.017,455100.0100.0+3,187
Source: Australian Bureau of Statistics, Census of Population and Housing 2011 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 Wantirna South in 2021 compared to the City of Knox 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, 16.0% of the population was aged between 0 and 15, and 20.8% were aged 65 years and over, compared with 17.1% and 17.7% respectively for the City of Knox.

The major differences between the age structure of Wantirna South and the City of Knox were:

  • A larger percentage of persons aged 85 and over (3.6% compared to 2.3%)
  • A larger percentage of persons aged 65 to 69 (6.1% compared to 5.3%)
  • A larger percentage of persons aged 60 to 64 (6.8% compared to 6.2%)
  • A smaller percentage of persons aged 0 to 4 (4.7% compared to 5.3%)

Emerging groups

From 2011 to 2021, Wantirna South's population increased by 3,188 people (18.3%). This represents an average annual population change of 1.69% per year over the period.

The largest changes in age structure in this area between 2011 and 2021 were in the age groups:

  • 65 to 69 (+531 persons)
  • 70 to 74 (+527 persons)
  • 30 to 34 (+501 persons)
  • 35 to 39 (+492 persons)

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