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RDA Northern TerritoryCommunity profile

RDA Northern Territory

Five year age groups

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In 2021, the largest age group in the RDA Northern Territory was 30 to 34 year olds. The group that changed the most since 1991 was 30 to 34 year olds, increasing by 21,952 people.

The Age Structure of the RDA Northern Territory 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 RDA Northern Territory'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 RDA Northern Territory'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
RDA Northern Territory - Total persons (Usual residence)20211991Change
Five year age groups (years)Number%Greater Darwin %Number%Greater Darwin %1991 to 2021
0 to 416,2247.06.80----+16,224
5 to 916,8427.27.00----+16,842
10 to 1415,8366.86.40----+15,836
15 to 1914,1836.15.50----+14,183
20 to 2415,7916.86.50----+15,791
25 to 2920,9369.09.00----+20,936
30 to 3421,9529.49.60----+21,952
35 to 3919,3968.38.50----+19,396
40 to 4416,4217.17.30----+16,421
45 to 4915,0566.56.70----+15,056
50 to 5414,9116.46.50----+14,911
55 to 5913,0785.65.70----+13,078
60 to 6411,1504.84.80----+11,150
65 to 698,4333.63.80----+8,433
70 to 746,0652.62.90----+6,065
75 to 793,2851.41.60----+3,285
80 to 841,8760.80.90----+1,876
85 and over1,1570.50.694100.0--+1,063
Total population232,592100.0100.094100.0--+232,498
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 the RDA Northern Territory in 2021 compared to Greater Darwin shows that there was a higher proportion of people in the younger age groups (under 15) and a lower proportion of people in the older age groups (65+).

Overall, 21.0% of the population was aged between 0 and 15, and 8.9% were aged 65 years and over, compared with 20.2% and 9.9% respectively for Greater Darwin.

The major difference between the age structure of the RDA Northern Territory and Greater Darwin is:

  • A larger percentage of persons aged 15 to 19 (6.1% compared to 5.5%)

Emerging groups

From 1991 to 2021, RDA Northern Territory's population increased by 232,498 people (247338.3%). This represents an average annual population change of 29.75% per year over the period.

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

  • 30 to 34 (+21,952 persons)
  • 25 to 29 (+20,936 persons)
  • 35 to 39 (+19,396 persons)
  • 5 to 9 (+16,842 persons)

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