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City of OnkaparingaCommunity profile

Flagstaff Hill - Darlington

Five year age groups

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In 2021, the largest age group in Flagstaff Hill - Darlington was 50 to 54 year olds. The group that changed the most since 1991 was 70 to 74 year olds, increasing by 585 people.

The Age Structure of Flagstaff Hill - Darlington provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Flagstaff Hill - Darlington'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 Flagstaff Hill - Darlington'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
Flagstaff Hill - Darlington - Total persons (Enumerated)20211991Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %1991 to 2021
0 to 45465.15.45626.78.4-16
5 to 96305.96.37609.19.2-131
10 to 147046.66.395211.38.9-248
15 to 196896.55.98339.98.2-144
20 to 246396.05.64565.46.7+183
25 to 294954.65.93774.57.6+117
30 to 345915.56.36567.89.0-66
35 to 396776.36.784610.19.3-169
40 to 447106.76.21,09613.09.3-387
45 to 497326.96.46427.65.9+90
50 to 547627.16.64034.84.1+358
55 to 597266.86.42693.23.1+456
60 to 647146.76.32282.73.0+486
65 to 696015.65.81591.92.7+442
70 to 746826.45.6961.12.1+585
75 to 794093.83.8540.71.5+354
80 to 841881.82.380.10.7+179
85 and over1691.62.20--0.3+169
Total population10,664100.0100.08,406100.0100.0+2,258
Source: Australian Bureau of Statistics, Census of Population and Housing 1991 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 Flagstaff Hill - Darlington in 2021 compared to the City of Onkaparinga shows that there was a similar proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).

Overall, 17.6% of the population was aged between 0 and 15, and 19.2% 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 Flagstaff Hill - Darlington and the City of Onkaparinga were:

  • A larger percentage of persons aged 70 to 74 (6.4% compared to 5.6%)
  • A smaller percentage of persons aged 25 to 29 (4.6% compared to 5.9%)
  • A smaller percentage of persons aged 30 to 34 (5.5% compared to 6.3%)
  • A smaller percentage of persons aged 85 and over (1.6% compared to 2.2%)

Emerging groups

From 1991 to 2021, Flagstaff Hill - Darlington's population increased by 2,258 people (26.9%). This represents an average annual population change of 0.8% per year over the period.

The largest changes in age structure in this area between 1991 and 2021 were in the age groups:

  • 70 to 74 (+585 persons)
  • 60 to 64 (+486 persons)
  • 55 to 59 (+456 persons)
  • 65 to 69 (+442 persons)

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