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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 35 to 39 year olds. The group that changed the most since 2016 was 70 to 74 year olds, increasing by 528 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 females (Usual residence)20212016Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %2016 to 2021
0 to 42,0435.25.12,2526.05.9-209
5 to 92,1915.65.92,1015.66.1+89
10 to 142,0865.35.82,0355.45.8+50
15 to 192,0355.25.62,1355.76.0-101
20 to 242,2685.85.42,3076.25.8-39
25 to 292,5806.65.92,4196.55.8+161
30 to 342,5676.66.22,6267.06.6-60
35 to 392,5926.66.82,4056.46.4+187
40 to 442,3406.06.32,2336.06.4+107
45 to 492,2875.96.22,4406.56.9-153
50 to 542,5296.56.72,4186.56.7+111
55 to 592,4816.46.52,4066.46.9+74
60 to 642,4586.36.62,3356.26.5+123
65 to 692,3846.16.22,4206.56.2-36
70 to 742,3536.05.91,8254.94.4+528
75 to 791,6414.23.91,1673.12.9+474
80 to 841,0402.72.58852.42.1+155
85 and over1,1412.92.61,0662.82.5+75
Total population39,016100.0100.037,480100.0100.0+1,536
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 female 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 females in the younger age groups (under 15) and a higher proportion of females in the older age groups (65+).

Overall, 16.2% of the female population was aged between 0 and 15, and 21.9% were aged 65 years and over, compared with 16.8% and 21.0% respectively for the City of Onkaparinga.

The major difference between the female age structure of the Central North District and the City of Onkaparinga is:

  • A larger percentage of females aged 25 to 29 (6.6% compared to 5.9%)

Emerging groups

From 2016 to 2021, Central North District's female population increased by 1,536 people (4.1%). This represents an average annual population change of 0.81% per year over the period.

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

  • 70 to 74 (+528 females)
  • 75 to 79 (+474 females)
  • 0 to 4 (-209 females)
  • 35 to 39 (+187 females)

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