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City of OnkaparingaCommunity profile
Service age groups Five year age groups Age-sex pyramid

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 lower proportion of persons aged 60 or older than Clarendon - Kangarilla - Blewitt Springs - Kuitpo - Dorset Vale.

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?'

Refers to:

Total population

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Age structure - Service age groups
City of Onkaparinga - Total persons (Enumerated)20212016Change
Service age group (years)Number%Clarendon - Kangarilla - Blewitt Springs - Kuitpo - Dorset Vale %Number%Clarendon - Kangarilla - Blewitt Springs - Kuitpo - Dorset Vale %2016 to 2021
Babies and pre-schoolers (0 to 4)9,3715.43.610,2576.34.7-886
Primary schoolers (5 to 11)15,1078.88.014,7489.06.6+359
Secondary schoolers (12 to 17)12,6897.47.312,4427.67.7+247
Tertiary education and independence (18 to 24)13,7228.06.713,8748.57.9-152
Young workforce (25 to 34)21,07012.27.220,37812.55.9+692
Parents and homebuilders (35 to 49)33,17119.317.632,24419.819.3+927
Older workers and pre-retirees (50 to 59)22,36513.017.721,59813.219.6+767
Empty nesters and retirees (60 to 69)20,84412.117.219,76612.116.7+1,078
Seniors (70 to 84)20,12311.713.414,5298.910.3+5,594
Elderly aged (85 and over)3,8552.21.43,3842.11.3+471
Total172,317100.0100.0163,220100.0100.0+9,097
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
Source: Australian Bureau of Statistics, Census of Population and Housing, 2021 (Enumerated data). Compiled and presented in profile.id by .id (informed decisions).
Source: Australian Bureau of Statistics, Census of Population and Housing, 2016 and 2021 (Enumerated data). Compiled and presented in profile.id by .id (informed decisions).

Dominant groups

Analysis of the service age groups of the City of Onkaparinga in 2021 compared to Clarendon - Kangarilla - Blewitt Springs - Kuitpo - Dorset Vale shows that there was a higher proportion of people in the younger age groups (0 to 17 years) and a lower proportion of people in the older age groups (60+ years).

Overall, 21.6% of the population was aged between 0 and 17, and 26.0% were aged 60 years and over, compared with 18.9% and 32.0% respectively for Clarendon - Kangarilla - Blewitt Springs - Kuitpo - Dorset Vale.

The major differences between the age structure of the City of Onkaparinga and Clarendon - Kangarilla - Blewitt Springs - Kuitpo - Dorset Vale were:

  • A larger percentage of 'Young workforce' (12.2% compared to 7.2%)
  • A larger percentage of 'Babies and pre-schoolers' (5.4% compared to 3.6%)
  • A smaller percentage of 'Empty nesters and retirees' (12.1% compared to 17.2%)
  • A smaller percentage of 'Older workers & pre-retirees' (13.0% compared to 17.7%)

Emerging groups

From 2016 to 2021, City of Onkaparinga's population increased by 9,097 people (5.6%). This represents an average annual population change of 1.09% 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) (+5,594 people)
  • Empty nesters and retirees (60 to 69) (+1,078 people)
  • Parents and homebuilders (35 to 49) (+927 people)
  • Babies and pre-schoolers (0 to 4) (-886 people)

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