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City of BaysideCommunity profile

We’re continuing to update these pages with data from the 2016 Census. Read more about our updates.

Black Rock

Service age groups

This topic has been updated with 2016 Census data for all areas. What's this?

Black Rock had a lower proportion of pre-schoolers and a higher proportion of persons at post retirement age than City of Bayside in 2016.

The Age Structure of Black Rock provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Black Rock's residential role and function and how it is likely to change in the future.

Service age groups divide the population into age categories that reflect typical life-stages. They indicate the level of demand for services that target people at different stages in life and how that demand is changing.

To get a more complete picture Black Rock's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.


Derived from the Census question:

'What is the person's date of birth or age?'

Age structure - Service age groups
Black Rock - Total persons (Usual residence)20162011Change
Service age group (years)Number%City of Bayside %Number%City of Bayside %2011 to 2016
Babies and pre-schoolers (0 to 4)2654.25.13135.26.0-48
Primary schoolers (5 to 11)5829.29.75709.49.7+12
Secondary schoolers (12 to 17)5308.48.24186.97.7+112
Tertiary education and independence (18 to 24)3966.37.44096.87.7-13
Young workforce (25 to 34)4336.98.24737.87.8-40
Parents and homebuilders (35 to 49)1,26820.221.31,29521.422.9-27
Older workers and pre-retirees (50 to 59)96015.314.986814.414.2+92
Empty nesters and retirees (60 to 69)90214.311.578813.011.0+114
Seniors (70 to 84)72111.59.968511.39.3+36
Elderly aged (85 and over)2343.73.72283.83.6+7
Source: Australian Bureau of Statistics, Census of Population and Housing 2011 and 2016. Compiled and presented by .id , the population experts.

Please refer to specific data notes for more information

Dominant groups

Analysis of the service age groups of Black Rock in 2016 compared to City of Bayside shows that there was a lower proportion of people in the younger age groups (0 to 17 years) and a higher proportion of people in the older age groups (60+ years).

Overall, 21.9% of the population was aged between 0 and 17, and 29.5% were aged 60 years and over, compared with 23.0% and 25.2% respectively for City of Bayside.

The major differences between the age structure of Black Rock and City of Bayside were:

  • A larger percentage of 'Empty nesters and retirees (60 to 69)' (14.3% compared to 11.5%)
  • A larger percentage of 'Seniors (70 to 84)' (11.5% compared to 9.9%)
  • A smaller percentage of 'Young workforce (25 to 34)' (6.9% compared to 8.2%)
  • A smaller percentage of 'Parents and homebuilders (35 to 49)' (20.2% compared to 21.3%)

Emerging groups

From 2011 to 2016, Black Rock's population increased by 244 people (4.0%). This represents an average annual population change of 0.79% per year over the period.

The largest changes in the age structure in this area between 2011 and 2016 were in the age groups:

  • Empty nesters and retirees (60 to 69) (+114 people)
  • Secondary schoolers (12 to 17) (+112 people)
  • Older workers and pre-retirees (50 to 59) (+92 people)

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