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City of OnkaparingaCommunity profile

City of Onkaparinga

Service age groups

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In 2021, the City of Onkaparinga had higher proportion of children (under 18) and a higher proportion of persons aged 60 or older than Greater Adelaide.

The Age Structure of the City of Onkaparinga provides key insights into the level of demand for age based services and facilities such as child care. It is an indicator of the City of Onkaparinga'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 City of Onkaparinga'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
City of Onkaparinga - Total persons (Usual residence)20212016Change
Service age group (years)Number%Greater Adelaide %Number%Greater Adelaide %2016 to 2021
Babies and pre-schoolers (0 to 4)9,4005.45.410,2926.25.9-892
Primary schoolers (5 to 11)15,1358.68.214,8228.98.2+313
Secondary schoolers (12 to 17)12,7197.36.912,4627.56.9+257
Tertiary education and independence (18 to 24)13,8907.98.814,0708.49.5-180
Young workforce (25 to 34)21,45112.214.020,69312.413.8+758
Parents and homebuilders (35 to 49)33,67219.219.632,86519.719.7+807
Older workers and pre-retirees (50 to 59)22,91013.112.622,19813.313.1+712
Empty nesters and retirees (60 to 69)21,50812.311.220,67912.411.1+829
Seniors (70 to 84)20,62311.810.715,2219.19.3+5,402
Elderly aged (85 and over)3,8872.22.63,4642.12.6+423
Total175,195100.0100.0166,766100.0100.0+8,429
Source: Australian Bureau of Statistics, Census of Population and Housing 2016 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 City of Onkaparinga in 2021 compared to Greater Adelaide 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, 21.3% of the population was aged between 0 and 17, and 26.3% were aged 60 years and over, compared with 20.5% and 24.6% respectively for Greater Adelaide.

The major differences between the age structure of the City of Onkaparinga and Greater Adelaide were:

  • A larger percentage of 'Empty nesters and retirees' (12.3% compared to 11.2%)
  • A larger percentage of 'Seniors' (11.8% compared to 10.7%)
  • A smaller percentage of 'Young workforce' (12.2% compared to 14.0%)
  • A smaller percentage of 'Tertiary education & independence' (7.9% compared to 8.8%)

Emerging groups

From 2016 to 2021, City of Onkaparinga's population increased by 8,429 people (5.1%). This represents an average annual population change of 0.99% per year over the period.

The largest changes in the age structure in this area between 2016 and 2021 were in the age groups:

  • Seniors (70 to 84) (+5,402 people)
  • Babies and pre-schoolers (0 to 4) (-892 people)
  • Empty nesters and retirees (60 to 69) (+829 people)
  • Parents and homebuilders (35 to 49) (+807 people)

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