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City of BoroondaraCommunity profile

Cotham Ward

Five year age groups

In 2021, the largest age group in Cotham Ward was 15 to 19 year olds. The group that changed the most since 1996 was 55 to 59 year olds, increasing by 426 people.

The Age Structure of Cotham Ward provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Cotham Ward'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 Cotham Ward'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
Cotham Ward - Total persons (Enumerated)20211996Change
Five year age groups (years)Number%City of Boroondara %Number%City of Boroondara %1996 to 2021
0 to 45463.54.08075.65.4-262
5 to 97514.85.48836.15.9-132
10 to 141,0616.76.89366.56.2+125
15 to 191,2638.07.11,1517.97.3+112
20 to 241,1707.47.31,1437.98.4+27
25 to 298575.46.68736.07.4-17
30 to 347184.66.07925.56.8-74
35 to 397354.76.09836.87.4-248
40 to 448835.66.31,0977.67.6-215
45 to 491,0856.97.01,1988.37.8-114
50 to 541,1587.47.39886.86.0+169
55 to 591,1177.16.66914.84.3+426
60 to 649255.95.75523.83.6+373
65 to 698605.54.95663.93.8+293
70 to 747664.94.55653.93.7+200
75 to 796364.03.45003.53.3+135
80 to 845583.52.43832.62.6+175
85 and over6624.23.03902.72.4+271
Total population15,751100.0100.014,506100.0100.0+1,245
Source: Australian Bureau of Statistics, Census of Population and Housing 1996 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 Cotham Ward in 2021 compared to the City of Boroondara 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, 15.0% of the population was aged between 0 and 15, and 22.1% were aged 65 years and over, compared with 16.1% and 18.2% respectively for the City of Boroondara.

The major differences between the age structure of Cotham Ward and the City of Boroondara were:

  • A larger percentage of persons aged 85 and over (4.2% compared to 3.0%)
  • A smaller percentage of persons aged 30 to 34 (4.6% compared to 6.0%)
  • A smaller percentage of persons aged 35 to 39 (4.7% compared to 6.0%)
  • A smaller percentage of persons aged 25 to 29 (5.4% compared to 6.6%)

Emerging groups

From 1996 to 2021, Cotham Ward's population increased by 1,245 people (8.6%). This represents an average annual population change of 0.33% per year over the period.

The largest changes in age structure in this area between 1996 and 2021 were in the age groups:

  • 55 to 59 (+426 persons)
  • 60 to 64 (+373 persons)
  • 65 to 69 (+293 persons)
  • 85 and over (+271 persons)

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