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AustraliaPopulation forecast

Northern Territory

Population and age structure

Between 2021 and 2031, the age structure forecasts for Northern Territory indicate a 0.4% increase in males under working age, a 36.6% increase in males of retirement age, and a 9.2% increase in males of working age.

Knowledge of how the age structure of the population is changing is essential for planning age-based facilities and services, such as child care, recreation and aged care.

The forecast age groups of Australia is a function of the current age of the population (people aging each year, being born and dying) as well as the age of people migrating into and out of the area. This in turn is driven by location (fringe, city centre, regional or rural) the existing housing stock (separate dwellings, medium or high density), the amount and type of new residential development (same as existing stock, or diversifying) and where the area is in a cycle of change. We call this the area’s residential role and function.

Forecast age structure - 5 year age groups
Northern Territory - Total males202120312041Change between 2021 and 2041
Age group (years)Number%Number%Number%Number
0 to 49,2237.39,2506.69,2726.2+49
5 to 99,2297.39,3156.79,0896.1-140
10 to 148,8527.08,8586.49,0146.0+162
15 to 197,8736.28,7756.38,9636.0+1,090
20 to 249,2607.310,2987.410,3586.9+1,098
25 to 2911,3599.011,5878.312,3398.3+980
30 to 3411,7549.311,2088.112,1808.2+426
35 to 3910,3448.211,4928.311,2227.5+878
40 to 448,6526.811,3598.210,6507.1+1,998
45 to 498,1756.49,9257.111,0937.4+2,918
50 to 547,9356.38,1115.810,7417.2+2,806
55 to 597,1195.67,1225.18,8866.0+1,767
60 to 645,9374.76,6254.86,7704.5+833
65 to 694,5443.65,3083.85,4133.6+869
70 to 743,3262.64,0382.94,7233.2+1,397
75 to 791,8131.42,8262.03,6132.4+1,800
80 to 849390.71,8801.42,5031.7+1,564
85 and over5170.41,1610.82,2231.5+1,706
Total persons126,851100.0139,136100.0149,054100.0+22,203
Source: .id SAFi National to State tops-down forecast, 5.1.0, published May 2023. Prepared by .id (informed decisions)

Key findings

In 2021, the dominant age structure for males in Northern Territory was ages 30 to 34, which accounted for 9.3% of the total males.

The largest increase in males between 2021 and 2031 is forecast to be in ages 40 to 44, which is expected to increase by 2,707 and account for 8.2% of the total males.

The largest male 5 year age group in 2031 is 25 to 29 years, with a total of 11,587 males.

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