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City of KnoxCommunity profile

Boronia

Five year age groups

In 2021, the largest age group in Boronia was 30 to 34 year olds. The group that changed the most since 2016 was 35 to 39 year olds, increasing by 284 people.

The Age Structure of Boronia provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Boronia'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 Boronia'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
Boronia - Total persons (Usual residence)20212016Change
Five year age groups (years)Number%City of Knox %Number%City of Knox %2016 to 2021
0 to 41,4396.15.31,4946.75.8-55
5 to 91,3515.75.91,2385.65.9+113
10 to 141,2405.25.81,0714.85.8+169
15 to 191,1074.75.91,0794.96.4+28
20 to 241,2895.46.11,3356.06.6-46
25 to 291,6987.26.01,6757.66.4+23
30 to 342,0538.76.71,8758.56.8+178
35 to 391,9058.17.21,6217.36.7+284
40 to 441,7007.26.81,5106.86.8+190
45 to 491,5356.56.71,4206.47.2+115
50 to 541,4426.16.81,3566.17.2+86
55 to 591,3435.76.71,3596.16.8-16
60 to 641,3065.56.21,3526.16.1-46
65 to 691,2515.35.41,2705.75.2-19
70 to 741,1084.74.68984.03.6+210
75 to 797603.23.27073.22.7+53
80 to 846092.62.44932.21.9+116
85 and over5172.22.24321.92.0+85
Total population23,653100.0100.022,185100.0100.0+1,468
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 Boronia in 2021 compared to the City of Knox shows that there was a similar proportion of people in the younger age groups (under 15) as well as a similar proportion of people in the older age groups (65+).

Overall, 17.0% of the population was aged between 0 and 15, and 17.9% were aged 65 years and over, compared with 17.0% and 17.9% respectively for the City of Knox.

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

  • A larger percentage of persons aged 30 to 34 (8.7% compared to 6.7%)
  • A larger percentage of persons aged 25 to 29 (7.2% compared to 6.0%)
  • A smaller percentage of persons aged 15 to 19 (4.7% compared to 5.9%)
  • A smaller percentage of persons aged 55 to 59 (5.7% compared to 6.7%)

Emerging groups

From 2016 to 2021, Boronia's population increased by 1,468 people (6.6%). This represents an average annual population change of 1.29% per year over the period.

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

  • 35 to 39 (+284 persons)
  • 70 to 74 (+210 persons)
  • 40 to 44 (+190 persons)
  • 30 to 34 (+178 persons)

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