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City of OnkaparingaCommunity profile

Central North District

Five year age groups

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In 2021, the largest age group in the Central North District was 30 to 34 year olds. The group that changed the most since 2006 was 70 to 74 year olds, increasing by 2,299 people.

The Age Structure of the Central North District provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of the Central North District's residential role and function and how it is likely to change in the future.

Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.

To get a more complete picture the Central North 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 - Five year age groups
Central North District - Total persons (Enumerated)20212006Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %2006 to 2021
0 to 44,1035.45.44,2856.36.2-183
5 to 94,4625.96.34,5836.76.9-122
10 to 144,4005.86.34,8457.17.4-446
15 to 194,2965.75.94,7917.07.4-496
20 to 244,5436.05.64,7136.96.6-170
25 to 295,0766.75.94,3006.35.8+775
30 to 345,1346.86.34,6536.86.5+481
35 to 395,0916.76.74,7977.07.1+294
40 to 444,4905.96.24,8567.17.4-367
45 to 494,6326.16.44,7627.07.7-130
50 to 544,8496.46.64,6906.97.3+159
55 to 594,6596.26.44,7526.97.0-94
60 to 644,5106.06.33,4925.14.8+1,018
65 to 694,2695.75.82,5283.73.4+1,741
70 to 744,2715.75.61,9712.92.7+2,299
75 to 792,9693.93.81,8402.72.5+1,128
80 to 841,8692.52.31,3622.01.8+507
85 and over1,8702.52.21,1561.71.4+714
Total population75,493100.0100.068,385100.0100.0+7,107
Source: Australian Bureau of Statistics, Census of Population and Housing 2006 and 2021. Compiled and presented by .id (informed decisions).
Please refer to specific data notes for more information

Dominant groups

Analysis of the five year age groups of the Central North District in 2021 compared to the City of Onkaparinga shows that there was a lower proportion of people in the younger age groups (under 15) and a similar proportion of people in the older age groups (65+).

Overall, 17.2% of the population was aged between 0 and 15, and 20.2% were aged 65 years and over, compared with 18.0% and 19.7% respectively for the City of Onkaparinga.

The major differences between the age structure of the Central North District and the City of Onkaparinga were:

  • A larger percentage of persons aged 25 to 29 (6.7% compared to 5.9%)
  • A larger percentage of persons aged 30 to 34 (6.8% compared to 6.3%)

Emerging groups

From 2006 to 2021, Central North District's population increased by 7,108 people (10.4%). This represents an average annual population change of 0.66% per year over the period.

The largest changes in age structure in this area between 2006 and 2021 were in the age groups:

  • 70 to 74 (+2,299 persons)
  • 65 to 69 (+1,741 persons)
  • 75 to 79 (+1,128 persons)
  • 60 to 64 (+1,018 persons)

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