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City of OnkaparingaCommunity profile

Northern District

Service age groups

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In 2021, the Northern District had lower proportion of female children (under 18) and a higher proportion of females aged 60 or older than Seaford Rise - Seaford Heights.

The Age Structure of the Northern District provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of the Northern District'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 the Northern District'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
Northern District - Total females (Enumerated)20212011Change
Service age group (years)Number%Seaford Rise - Seaford Heights %Number%Seaford Rise - Seaford Heights %2011 to 2021
Babies and pre-schoolers (0 to 4)1,0475.16.21,1715.87.3-124
Primary schoolers (5 to 11)1,6297.99.91,6788.39.3-49
Secondary schoolers (12 to 17)1,4387.07.51,6908.48.4-252
Tertiary education and independence (18 to 24)1,5107.47.71,8129.07.7-302
Young workforce (25 to 34)2,29511.213.22,41512.012.8-120
Parents and homebuilders (35 to 49)4,12820.120.94,38821.823.1-260
Older workers and pre-retirees (50 to 59)2,67613.013.83,17315.812.2-497
Empty nesters and retirees (60 to 69)2,74213.49.62,05610.29.2+686
Seniors (70 to 84)2,48812.19.51,2916.48.6+1,197
Elderly aged (85 and over)5812.81.64222.11.4+159
Total20,534100.0100.020,096100.0100.0+438
Source: Australian Bureau of Statistics, Census of Population and Housing 2011 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the female service age groups of the Northern District in 2021 compared to Seaford Rise - Seaford Heights shows that there was a lower proportion of females in the younger age groups (0 to 17 years) and a higher proportion of females in the older age groups (60+ years).

Overall, 20.0% of the female population was aged between 0 and 17, and 28.3% were aged 60 years and over, compared with 23.6% and 20.6% respectively for Seaford Rise - Seaford Heights.

The major differences between the female age structure of the Northern District and Seaford Rise - Seaford Heights were:

  • A larger percentage of 'Empty nesters and retirees' (13.4% compared to 9.6%)
  • A larger percentage of 'Seniors' (12.1% compared to 9.5%)
  • A smaller percentage of 'Young workforce' (11.2% compared to 13.2%)
  • A smaller percentage of 'Primary schoolers' (7.9% compared to 9.9%)

Emerging groups

From 2011 to 2021, Northern District's female population increased by 438 people (2.2%). This represents an average annual population change of 0.22% per year over the period.

The largest changes in the female age structure in this area between 2011 and 2021 were in the age groups:

  • Seniors (70 to 84) (+1,197 females)
  • Empty nesters and retirees (60 to 69) (+686 females)
  • Older workers and pre-retirees (50 to 59) (-497 females)
  • Tertiary education and independence (18 to 24) (-302 females)

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