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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 the Southern District.

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 (Usual residence)20212001Change
Service age group (years)Number%Southern District %Number%Southern District %2001 to 2021
Babies and pre-schoolers (0 to 4)1,0435.05.31,2056.17.3-163
Primary schoolers (5 to 11)1,6357.89.82,00510.112.2-371
Secondary schoolers (12 to 17)1,4466.97.62,07410.48.6-629
Tertiary education and independence (18 to 24)1,5507.46.91,9309.76.8-380
Young workforce (25 to 34)2,32111.111.02,46212.413.8-141
Parents and homebuilders (35 to 49)4,16620.020.75,43627.323.5-1,270
Older workers and pre-retirees (50 to 59)2,72013.013.22,65913.410.8+61
Empty nesters and retirees (60 to 69)2,84413.612.49724.98.1+1,872
Seniors (70 to 84)2,55212.211.19764.97.7+1,576
Elderly aged (85 and over)5862.82.01890.91.0+397
Total20,863100.0100.019,911100.0100.0+951
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 female service age groups of the Northern District in 2021 compared to the Southern District 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, 19.8% of the female population was aged between 0 and 17, and 28.7% were aged 60 years and over, compared with 22.6% and 25.5% respectively for the Southern District.

The major differences between the female age structure of the Northern District and the Southern District were:

  • A larger percentage of 'Empty nesters and retirees' (13.6% compared to 12.4%)
  • A larger percentage of 'Seniors' (12.2% compared to 11.1%)
  • A larger percentage of 'Frail aged' (2.8% compared to 2.0%)
  • A smaller percentage of 'Primary schoolers' (7.8% compared to 9.8%)

Emerging groups

From 2001 to 2021, Northern District's female population increased by 952 people (4.8%). This represents an average annual population change of 0.23% per year over the period.

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

  • Empty nesters and retirees (60 to 69) (+1,872 females)
  • Seniors (70 to 84) (+1,576 females)
  • Parents and homebuilders (35 to 49) (-1,270 females)
  • Secondary schoolers (12 to 17) (-629 females)

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