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AustraliaCommunity profile

Northern Territory

Five year age groups

In 2021, the largest age group in Northern Territory was 30 to 34 year olds. The group that changed the most since 1991 was 30 to 34 year olds, increasing by 10,671 people.

The Age Structure of 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 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 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
Northern Territory - Total males (Usual residence)20211991Change
Five year age groups (years)Number%Tasmania %Number%Tasmania %1991 to 2021
0 to 48,4457.25.30----+8,445
5 to 98,5657.35.80----+8,565
10 to 148,2187.06.30----+8,218
15 to 197,3206.25.70----+7,320
20 to 248,3217.15.80----+8,321
25 to 2910,2628.77.20----+10,262
30 to 3410,6719.16.90----+10,671
35 to 399,4968.16.20----+9,496
40 to 448,1626.95.50----+8,162
45 to 497,5946.55.90----+7,594
50 to 547,4516.36.30----+7,451
55 to 596,6735.76.50----+6,673
60 to 645,6214.86.80----+5,621
65 to 694,3833.76.30----+4,383
70 to 743,1862.75.70----+3,186
75 to 791,7401.53.80----+1,740
80 to 849030.82.40----+903
85 and over4990.41.842100.0100.0+457
Total population117,510100.0100.042100.0100.0+117,468
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 male five year age groups of Northern Territory in 2021 compared to Tasmania shows that there was a higher proportion of males in the younger age groups (under 15) and a lower proportion of males in the older age groups (65+).

Overall, 21.5% of the male population was aged between 0 and 15, and 9.1% were aged 65 years and over, compared with 17.4% and 20.1% respectively for Tasmania.

The major differences between the male age structure of Northern Territory and Tasmania were:

  • A larger percentage of males aged 30 to 34 (9.1% compared to 6.9%)
  • A smaller percentage of males aged 70 to 74 (2.7% compared to 5.7%)
  • A smaller percentage of males aged 65 to 69 (3.7% compared to 6.3%)
  • A smaller percentage of males aged 75 to 79 (1.5% compared to 3.8%)

Emerging groups

From 1991 to 2021, Northern Territory's male population increased by 117,468 people (279685.7%). This represents an average annual population change of 30.28% per year over the period.

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

  • 30 to 34 (+10,671 males)
  • 25 to 29 (+10,262 males)
  • 35 to 39 (+9,496 males)
  • 5 to 9 (+8,565 males)

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