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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 children (under 18) and a higher proportion of persons 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 persons (Enumerated)20212001Change
Service age group (years)Number%Seaford Rise - Seaford Heights %Number%Seaford Rise - Seaford Heights %2001 to 2021
Babies and pre-schoolers (0 to 4)2,1165.36.62,4376.38.1-321
Primary schoolers (5 to 11)3,4228.510.54,02910.413.4-608
Secondary schoolers (12 to 17)3,0437.68.34,18010.79.4-1,138
Tertiary education and independence (18 to 24)3,0877.78.24,02110.37.1-935
Young workforce (25 to 34)4,44211.113.44,74012.214.8-298
Parents and homebuilders (35 to 49)7,91519.820.510,08725.922.5-2,173
Older workers and pre-retirees (50 to 59)5,19413.013.35,27813.610.7-84
Empty nesters and retirees (60 to 69)5,17312.99.12,0045.27.0+3,169
Seniors (70 to 84)4,72911.88.81,8174.76.9+2,912
Elderly aged (85 and over)9452.41.42970.80.2+648
Total40,066100.0100.038,894100.0100.0+1,172
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 the Northern District in 2021 compared to Seaford Rise - Seaford Heights 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, 21.4% of the population was aged between 0 and 17, and 27.1% were aged 60 years and over, compared with 25.4% and 19.2% respectively for Seaford Rise - Seaford Heights.

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

  • A larger percentage of 'Empty nesters and retirees' (12.9% compared to 9.1%)
  • A larger percentage of 'Seniors' (11.8% compared to 8.8%)
  • A smaller percentage of 'Young workforce' (11.1% compared to 13.4%)
  • A smaller percentage of 'Primary schoolers' (8.5% compared to 10.5%)

Emerging groups

From 2001 to 2021, Northern District's population increased by 1,172 people (3.0%). This represents an average annual population change of 0.15% per year over the period.

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

  • Empty nesters and retirees (60 to 69) (+3,169 people)
  • Seniors (70 to 84) (+2,912 people)
  • Parents and homebuilders (35 to 49) (-2,173 people)
  • Secondary schoolers (12 to 17) (-1,138 people)

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