Population
Five year age groups
About this topic
Five year age groups show the population in standard five-year cohorts from early childhood through older age. Because each band covers the same span of years, the topic gives a clear and comparable view of an area's age structure.
This topic is useful for identifying growth or decline in specific cohorts and for comparing age patterns across places and over time. For service planning, it is often read together with service age groups, household types, and dwelling types.
Interpretation notes
- Age is reported as at Census night, so the counts are a snapshot of the resident age structure at that point in time.
- Because each band covers the same five-year span, this topic is best for exact cohort comparison rather than service-planning life stages.
Related topics
Key insight
In 2021, 35 to 39 year olds was the largest age group among residents in Unincorporated NT, accounting for 9.3% (632 people). This share was higher than Regional NT (8.1%). Since 2016, the biggest change was in 25 to 29 year olds, which decreased by 117 people and 1.6 percentage points.
Section overview
Age structure - Five year age groups
Unincorporated NT - Total persons (Usual residence)
This table summarises five year age groups for Unincorporated NT in 2021 for persons, with comparison against Regional NT and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Unincorporated NT, with comparison markers for Regional NT.
0 to 4
2021 count
434
% of total
6.4%
Change from 2016
-0.5pp
434
6.4%
-0.5pp
5 to 9
2021 count
552
% of total
8.1%
Change from 2016
+0.6pp
552
8.1%
+0.6pp
10 to 14
2021 count
473
% of total
7.0%
Change from 2016
+0.3pp
473
7.0%
+0.3pp
15 to 19
2021 count
350
% of total
5.1%
Change from 2016
+1.1pp
350
5.1%
+1.1pp
20 to 24
2021 count
365
% of total
5.4%
Change from 2016
-1.1pp
365
5.4%
-1.1pp
25 to 29
2021 count
561
% of total
8.2%
Change from 2016
-1.6pp
561
8.2%
-1.6pp
30 to 34
2021 count
582
% of total
8.6%
Change from 2016
-0.5pp
582
8.6%
-0.5pp
35 to 39
2021 count
632
% of total
9.3%
Change from 2016
+0.6pp
632
9.3%
+0.6pp
40 to 44
2021 count
566
% of total
8.3%
Change from 2016
+0.1pp
566
8.3%
+0.1pp
45 to 49
2021 count
525
% of total
7.7%
Change from 2016
+0.2pp
525
7.7%
+0.2pp
50 to 54
2021 count
453
% of total
6.7%
Change from 2016
-1.3pp
453
6.7%
-1.3pp
55 to 59
2021 count
435
% of total
6.4%
Change from 2016
0.0pp
435
6.4%
0.0pp
60 to 64
2021 count
314
% of total
4.6%
Change from 2016
-0.5pp
314
4.6%
-0.5pp
65 to 69
2021 count
263
% of total
3.9%
Change from 2016
+0.4pp
263
3.9%
+0.4pp
70 to 74
2021 count
170
% of total
2.5%
Change from 2016
+0.8pp
170
2.5%
+0.8pp
75 to 79
2021 count
72
% of total
1.1%
Change from 2016
+0.6pp
72
1.1%
+0.6pp
80 to 84
2021 count
19
% of total
0.3%
Change from 2016
+0.2pp
19
0.3%
+0.2pp
85 and over
2021 count
7
% of total
0.1%
Change from 2016
0.0pp
7
0.1%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-45
-0.5pp
5 to 9
+31
+0.6pp
10 to 14
+11
+0.3pp
15 to 19
+75
+1.1pp
20 to 24
-87
-1.1pp
25 to 29
-117
-1.6pp
30 to 34
-45
-0.5pp
35 to 39
+34
+0.6pp
40 to 44
0
+0.1pp
45 to 49
+9
+0.2pp
50 to 54
-98
-1.3pp
55 to 59
-10
0.0pp
60 to 64
-36
-0.5pp
65 to 69
+20
+0.4pp
70 to 74
+55
+0.8pp
75 to 79
+35
+0.6pp
80 to 84
+12
+0.2pp
85 and over
-1
0.0pp
Data table
Five year age groups for Unincorporated NT. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional NT.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional NT% | Count | % | Regional NT% | Count | pp | |
| 0 to 4 | 434 | 6.4% | 7.3% | 479 | 6.9% | 8.3% | -45 | -0.5pp |
| 5 to 9 | 552 | 8.1% | 7.8% | 521 | 7.5% | 8.4% | +31 | +0.6pp |
| 10 to 14 | 473 | 7.0% | 7.5% | 462 | 6.7% | 7.7% | +11 | +0.3pp |
| 15 to 19 | 350 | 5.1% | 7.2% | 275 | 4.0% | 7.2% | +75 | +1.1pp |
| 20 to 24 | 365 | 5.4% | 7.4% | 452 | 6.5% | 7.7% | -87 | -1.1pp |
| 25 to 29 | 561 | 8.2% | 9.0% | 678 | 9.8% | 8.9% | -117 | -1.6pp |
| 30 to 34 | 582 | 8.6% | 9.2% | 627 | 9.1% | 8.6% | -45 | -0.5pp |
| 35 to 39 | 632 | 9.3% | 8.1% | 598 | 8.7% | 7.1% | +34 | +0.6pp |
| 40 to 44 | 566 | 8.3% | 6.6% | 566 | 8.2% | 6.8% | 0 | +0.1pp |
| 45 to 49 | 525 | 7.7% | 6.1% | 516 | 7.5% | 6.9% | +9 | +0.2pp |
| 50 to 54 | 453 | 6.7% | 6.2% | 551 | 8.0% | 6.4% | -98 | -1.3pp |
| 55 to 59 | 435 | 6.4% | 5.4% | 445 | 6.4% | 5.5% | -10 | 0.0pp |
| 60 to 64 | 314 | 4.6% | 4.7% | 350 | 5.1% | 4.4% | -36 | -0.5pp |
| 65 to 69 | 263 | 3.9% | 3.3% | 243 | 3.5% | 2.8% | +20 | +0.4pp |
| 70 to 74 | 170 | 2.5% | 2.1% | 115 | 1.7% | 1.6% | +55 | +0.8pp |
| 75 to 79 | 72 | 1.1% | 1.1% | 37 | 0.5% | 0.9% | +35 | +0.6pp |
| 80 to 84 | 19 | 0.3% | 0.6% | 7 | 0.1% | 0.5% | +12 | +0.2pp |
| 85 and over | 7 | 0.1% | 0.4% | 8 | 0.1% | 0.3% | -1 | 0.0pp |
| Total | 6,802 | 100.0% | 100.0% | 6,907 | 100.0% | 100.0% | -105 | 0.0pp |