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City of DarebinCommunity profile
Service age groups Five year age groups Age-sex pyramid

Reservoir (Oakhill)

Service age groups

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In 2021, Reservoir (Oakhill) had higher proportion of children (under 18) and a higher proportion of persons aged 60 or older than Preston Activity Area.

The Age Structure of Reservoir (Oakhill) provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Reservoir (Oakhill)'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 Reservoir (Oakhill)'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?'

Refers to:

Total population

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Age structure - Service age groups
Reservoir (Oakhill) - Total persons (Usual residence)20212001Change
Service age group (years)Number%Preston Activity Area %Number%Preston Activity Area %2001 to 2021
Babies and pre-schoolers (0 to 4)6975.45.17006.26.6-3
Primary schoolers (5 to 11)8346.46.19498.57.3-116
Secondary schoolers (12 to 17)6975.43.37336.55.1-36
Tertiary education and independence (18 to 24)1,1038.58.41,0038.910.4+99
Young workforce (25 to 34)2,44718.927.71,68715.020.3+760
Parents and homebuilders (35 to 49)2,67320.724.82,30820.621.7+364
Older workers and pre-retirees (50 to 59)1,51411.79.51,0269.110.7+488
Empty nesters and retirees (60 to 69)1,2219.47.49798.77.7+242
Seniors (70 to 84)1,2269.56.21,54513.88.7-319
Elderly aged (85 and over)5274.11.62892.61.5+237
Total12,939100.0100.011,222100.0100.0+1,716
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
Source: Australian Bureau of Statistics, Census of Population and Housing, 2021 (Usual residence data). Compiled and presented in profile.id by .id (informed decisions).
Source: Australian Bureau of Statistics, Census of Population and Housing, 2001 and 2021 (Usual residence data). Compiled and presented in profile.id by .id (informed decisions).

Dominant groups

Analysis of the service age groups of Reservoir (Oakhill) in 2021 compared to Preston Activity Area shows that there was a higher proportion of people in the younger age groups (0 to 17 years) as well as a higher proportion of people in the older age groups (60+ years).

Overall, 17.2% of the population was aged between 0 and 17, and 23.0% were aged 60 years and over, compared with 14.5% and 15.2% respectively for Preston Activity Area.

The major differences between the age structure of Reservoir (Oakhill) and Preston Activity Area were:

  • A larger percentage of 'Seniors' (9.5% compared to 6.2%)
  • A larger percentage of 'Frail aged' (4.1% compared to 1.6%)
  • A smaller percentage of 'Young workforce' (18.9% compared to 27.7%)
  • A smaller percentage of 'Parents and homebuilders' (20.7% compared to 24.8%)

Emerging groups

From 2001 to 2021, Reservoir (Oakhill)'s population increased by 1,717 people (15.3%). This represents an average annual population change of 0.71% per year over the period.

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

  • Young workforce (25 to 34) (+760 people)
  • Older workers and pre-retirees (50 to 59) (+488 people)
  • Parents and homebuilders (35 to 49) (+364 people)
  • Seniors (70 to 84) (-319 people)

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