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Mosman Municipal CouncilCommunity profile

Mosman Council area

Five year age groups

In 2021, the largest age group in Mosman Council area was 50 to 54 year olds. The group that changed the most since 2001 was 70 to 74 year olds, increasing by 702 people.

The Age Structure of Mosman Council 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 Mosman Council 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 Mosman Council 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
Mosman Council area - Total persons (Enumerated)20212001Change
Five year age groups (years)Number%Greater Sydney %Number%Greater Sydney %2001 to 2021
0 to 41,2044.46.01,4885.86.7-284
5 to 91,4795.46.31,4675.86.8+12
10 to 141,8106.66.21,3565.36.7+454
15 to 191,5795.75.61,3155.26.9+264
20 to 241,3164.86.51,4755.87.1-159
25 to 291,3074.77.51,9947.87.9-687
30 to 341,6145.88.02,1958.68.1-581
35 to 391,7866.57.92,1518.48.0-365
40 to 441,8116.67.02,0528.17.7-241
45 to 492,0397.46.61,8637.36.9+176
50 to 542,0687.56.21,8827.46.5+186
55 to 591,8816.85.81,5886.24.9+293
60 to 641,6866.15.31,0434.13.9+643
65 to 691,4665.34.58003.13.2+666
70 to 741,4955.43.97933.13.0+702
75 to 791,3054.72.87462.92.6+559
80 to 848403.02.06292.51.7+211
85 and over9123.32.06362.51.4+276
Total population27,598100.0100.025,473100.0100.0+2,125
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 Mosman Council area in 2021 compared to Greater Sydney 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, 16.3% of the population was aged between 0 and 15, and 21.8% were aged 65 years and over, compared with 18.4% and 15.2% respectively for Greater Sydney.

The major differences between the age structure of Mosman Council area and Greater Sydney were:

  • A larger percentage of persons aged 75 to 79 (4.7% compared to 2.8%)
  • A smaller percentage of persons aged 25 to 29 (4.7% compared to 7.5%)
  • A smaller percentage of persons aged 30 to 34 (5.8% compared to 8.0%)
  • A smaller percentage of persons aged 20 to 24 (4.8% compared to 6.5%)

Emerging groups

From 2001 to 2021, Mosman Council area's population increased by 2,125 people (8.3%). This represents an average annual population change of 0.4% per year over the period.

The largest changes in age structure in this area between 2001 and 2021 were in the age groups:

  • 70 to 74 (+702 persons)
  • 25 to 29 (-687 persons)
  • 65 to 69 (+666 persons)
  • 60 to 64 (+643 persons)

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