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In 2021, Bidwill had higher proportion of children (under 18) and a higher proportion of persons aged 60 or older than Blacktown City.

The Age Structure of Bidwill provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of Bidwill'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 Bidwill'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 - Service age groups
Bidwill - Total persons (Enumerated)20212001Change
Service age group (years)Number%Blacktown City %Number%Blacktown City %2001 to 2021
Babies and pre-schoolers (0 to 4)3558.57.547110.18.7-117
Primary schoolers (5 to 11)54713.011.073215.612.0-186
Secondary schoolers (12 to 17)44810.78.056312.09.2-116
Tertiary education and independence (18 to 24)44410.69.051411.010.3-70
Young workforce (25 to 34)56513.514.963513.616.1-70
Parents and homebuilders (35 to 49)66715.923.490019.222.2-233
Older workers and pre-retirees (50 to 59)45310.810.750810.910.6-56
Empty nesters and retirees (60 to 69)3989.58.22314.95.8+166
Seniors (70 to 84)2937.06.21112.44.5+181
Elderly aged (85 and over)240.61.1130.30.6+11
Total4,194100.0100.04,683100.0100.0-489
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 service age groups of Bidwill in 2021 compared to Blacktown City 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, 32.2% of the population was aged between 0 and 17, and 17.0% were aged 60 years and over, compared with 26.5% and 15.5% respectively for Blacktown City.

The major differences between the age structure of Bidwill and Blacktown City were:

  • A larger percentage of 'Secondary schoolers' (10.7% compared to 8.0%)
  • A larger percentage of 'Primary schoolers' (13.0% compared to 11.0%)
  • A larger percentage of 'Tertiary education & independence' (10.6% compared to 9.0%)
  • A smaller percentage of 'Parents and homebuilders' (15.9% compared to 23.4%)

Emerging groups

From 2001 to 2021, Bidwill's population decreased by 489 people (10.4%). This represents an average annual population change of -0.55% per year over the period.

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

  • Parents and homebuilders (35 to 49) (-233 people)
  • Primary schoolers (5 to 11) (-186 people)
  • Seniors (70 to 84) (+181 people)
  • Empty nesters and retirees (60 to 69) (+166 people)

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