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RDA Northern TerritoryCommunity profile

Central Australia

Five year age groups

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In 2021, the largest age group in Central Australia was 30 to 34 year olds. The group that changed the most since 2006 was 30 to 34 year olds, increasing by 723 people.

The Age Structure of Central Australia provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Central Australia'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 Central Australia'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 Australia - Total persons (Usual residence)20212006Change
Five year age groups (years)Number%RDA Northern Territory %Number%RDA Northern Territory %2006 to 2021
0 to 42,6427.37.02,8178.18.3-175
5 to 92,5977.27.22,8778.38.4-280
10 to 142,4936.96.82,8788.38.1-385
15 to 192,2166.16.12,7167.87.5-500
20 to 242,2626.36.82,8468.27.8-584
25 to 293,2789.19.02,8268.18.1+452
30 to 343,5789.99.42,8558.28.5+723
35 to 393,0768.58.32,8828.38.4+194
40 to 442,4896.97.12,7067.87.8-217
45 to 492,2656.36.52,5817.47.3-316
50 to 542,2576.36.42,3596.86.4-102
55 to 592,1045.85.61,6244.75.2+480
60 to 641,8285.14.81,1353.33.4+693
65 to 691,2743.53.66591.92.1+615
70 to 748212.32.63861.11.2+435
75 to 794171.21.43120.90.8+105
80 to 842940.80.81540.40.4+140
85 and over2080.60.51500.40.3+58
Total population36,099100.0100.034,763100.0100.0+1,336
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 Central Australia in 2021 compared to the RDA Northern Territory 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, 21.4% of the population was aged between 0 and 15, and 8.3% were aged 65 years and over, compared with 21.0% and 8.9% respectively for the RDA Northern Territory.

The major difference between the age structure of Central Australia and the RDA Northern Territory is:

  • A smaller percentage of persons aged 20 to 24 (6.3% compared to 6.8%)

Emerging groups

From 2006 to 2021, Central Australia's population increased by 1,336 people (3.8%). This represents an average annual population change of 0.25% per year over the period.

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

  • 30 to 34 (+723 persons)
  • 60 to 64 (+693 persons)
  • 65 to 69 (+615 persons)
  • 20 to 24 (-584 persons)

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