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National Growth Areas AllianceCommunity profile

National Growth Areas Alliance (NGAA)

Five year age groups

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In 2021, the largest age group in National Growth Areas Alliance (NGAA) was 35 to 39 year olds. The group that changed the most since 2006 was 30 to 34 year olds, increasing by 85,658 people.

The Age Structure of National Growth Areas Alliance (NGAA) provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of National Growth Areas Alliance (NGAA)'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 National Growth Areas Alliance (NGAA)'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
National Growth Areas Alliance (NGAA) - Total females (Enumerated)20212006Change
Five year age groups (years)Number%Growth LGAs in SA %Number%Growth LGAs in SA %2006 to 2021
0 to 4182,8277.07.1119,4847.37.1+63,343
5 to 9193,5817.47.2124,9327.67.6+68,648
10 to 14181,7226.96.9128,1277.87.7+53,595
15 to 19158,3766.05.9120,0317.37.3+38,345
20 to 24158,6066.16.6108,6126.66.6+49,994
25 to 29178,8516.87.6107,8766.65.9+70,974
30 to 34209,3898.07.6123,7317.56.8+85,658
35 to 39215,6998.27.0130,8858.07.5+84,813
40 to 44181,4566.95.8127,8737.87.7+53,582
45 to 49169,4276.56.0119,9047.37.2+49,523
50 to 54159,1756.16.1104,7346.46.1+54,441
55 to 59144,5015.55.994,0145.75.4+50,487
60 to 64130,9035.05.465,9314.04.2+64,971
65 to 69111,6534.34.449,2553.03.6+62,398
70 to 7496,2083.73.838,7362.43.1+57,472
75 to 7964,1482.42.732,6052.02.8+31,542
80 to 8442,4461.62.023,8151.51.8+18,631
85 and over41,6101.62.019,9651.21.5+21,644
Total population2,620,578100.0100.01,640,517100.0100.0+980,060
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 female five year age groups of National Growth Areas Alliance (NGAA) in 2021 compared to Growth LGAs in SA shows that there was a similar proportion of females in the younger age groups (under 15) and a lower proportion of females in the older age groups (65+).

Overall, 21.3% of the female population was aged between 0 and 15, and 13.6% were aged 65 years and over, compared with 21.2% and 14.9% respectively for Growth LGAs in SA.

The major differences between the female age structure of National Growth Areas Alliance (NGAA) and Growth LGAs in SA were:

  • A larger percentage of females aged 35 to 39 (8.2% compared to 7.0%)
  • A larger percentage of females aged 40 to 44 (6.9% compared to 5.8%)
  • A smaller percentage of females aged 25 to 29 (6.8% compared to 7.6%)
  • A smaller percentage of females aged 20 to 24 (6.1% compared to 6.6%)

Emerging groups

From 2006 to 2021, National Growth Areas Alliance (NGAA)'s female population increased by 980,061 people (59.7%). This represents an average annual population change of 3.17% per year over the period.

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

  • 30 to 34 (+85,658 females)
  • 35 to 39 (+84,813 females)
  • 25 to 29 (+70,974 females)
  • 5 to 9 (+68,648 females)

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