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, 25 to 29 year olds was the largest age group among residents in West Arnhem (R), accounting for 10.2% (643 people). This share was higher than Regional NT (9%). Since 2016, the biggest change was in 0 to 4 year olds, which decreased by 175 people and 3 percentage points.
Section overview
Age structure - Five year age groups
West Arnhem (R) - Total persons (Usual residence)
This table summarises five year age groups for West Arnhem (R) 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 West Arnhem (R), with comparison markers for Regional NT.
0 to 4
2021 count
447
% of total
7.1%
Change from 2016
-3.0pp
447
7.1%
-3.0pp
5 to 9
2021 count
571
% of total
9.1%
Change from 2016
+0.7pp
571
9.1%
+0.7pp
10 to 14
2021 count
507
% of total
8.1%
Change from 2016
+0.1pp
507
8.1%
+0.1pp
15 to 19
2021 count
539
% of total
8.6%
Change from 2016
+0.6pp
539
8.6%
+0.6pp
20 to 24
2021 count
596
% of total
9.5%
Change from 2016
+0.5pp
596
9.5%
+0.5pp
25 to 29
2021 count
643
% of total
10.2%
Change from 2016
+0.5pp
643
10.2%
+0.5pp
30 to 34
2021 count
599
% of total
9.5%
Change from 2016
+1.2pp
599
9.5%
+1.2pp
35 to 39
2021 count
517
% of total
8.2%
Change from 2016
+0.8pp
517
8.2%
+0.8pp
40 to 44
2021 count
416
% of total
6.6%
Change from 2016
-1.9pp
416
6.6%
-1.9pp
45 to 49
2021 count
367
% of total
5.8%
Change from 2016
-1.2pp
367
5.8%
-1.2pp
50 to 54
2021 count
399
% of total
6.4%
Change from 2016
+0.4pp
399
6.4%
+0.4pp
55 to 59
2021 count
265
% of total
4.2%
Change from 2016
+0.3pp
265
4.2%
+0.3pp
60 to 64
2021 count
206
% of total
3.3%
Change from 2016
+0.3pp
206
3.3%
+0.3pp
65 to 69
2021 count
116
% of total
1.8%
Change from 2016
+0.6pp
116
1.8%
+0.6pp
70 to 74
2021 count
56
% of total
0.9%
Change from 2016
+0.3pp
56
0.9%
+0.3pp
75 to 79
2021 count
23
% of total
0.4%
Change from 2016
-0.1pp
23
0.4%
-0.1pp
80 to 84
2021 count
11
% of total
0.2%
Change from 2016
0.0pp
11
0.2%
0.0pp
85 and over
2021 count
4
% of total
0.1%
Change from 2016
-0.1pp
4
0.1%
-0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-175
-3.0pp
5 to 9
+54
+0.7pp
10 to 14
+13
+0.1pp
15 to 19
+45
+0.6pp
20 to 24
+38
+0.5pp
25 to 29
+42
+0.5pp
30 to 34
+88
+1.2pp
35 to 39
+57
+0.8pp
40 to 44
-113
-1.9pp
45 to 49
-69
-1.2pp
50 to 54
+30
+0.4pp
55 to 59
+23
+0.3pp
60 to 64
+22
+0.3pp
65 to 69
+39
+0.6pp
70 to 74
+16
+0.3pp
75 to 79
-6
-0.1pp
80 to 84
+1
0.0pp
85 and over
-8
-0.1pp
Data table
Five year age groups for West Arnhem (R). 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 | 447 | 7.1% | 7.3% | 622 | 10.1% | 8.3% | -175 | -3.0pp |
| 5 to 9 | 571 | 9.1% | 7.8% | 517 | 8.4% | 8.4% | +54 | +0.7pp |
| 10 to 14 | 507 | 8.1% | 7.5% | 494 | 8.0% | 7.7% | +13 | +0.1pp |
| 15 to 19 | 539 | 8.6% | 7.2% | 494 | 8.0% | 7.2% | +45 | +0.6pp |
| 20 to 24 | 596 | 9.5% | 7.4% | 558 | 9.0% | 7.7% | +38 | +0.5pp |
| 25 to 29 | 643 | 10.2% | 9.0% | 601 | 9.7% | 8.9% | +42 | +0.5pp |
| 30 to 34 | 599 | 9.5% | 9.2% | 511 | 8.3% | 8.6% | +88 | +1.2pp |
| 35 to 39 | 517 | 8.2% | 8.1% | 460 | 7.4% | 7.1% | +57 | +0.8pp |
| 40 to 44 | 416 | 6.6% | 6.6% | 529 | 8.5% | 6.8% | -113 | -1.9pp |
| 45 to 49 | 367 | 5.8% | 6.1% | 436 | 7.0% | 6.9% | -69 | -1.2pp |
| 50 to 54 | 399 | 6.4% | 6.2% | 369 | 6.0% | 6.4% | +30 | +0.4pp |
| 55 to 59 | 265 | 4.2% | 5.4% | 242 | 3.9% | 5.5% | +23 | +0.3pp |
| 60 to 64 | 206 | 3.3% | 4.7% | 184 | 3.0% | 4.4% | +22 | +0.3pp |
| 65 to 69 | 116 | 1.8% | 3.3% | 77 | 1.2% | 2.8% | +39 | +0.6pp |
| 70 to 74 | 56 | 0.9% | 2.1% | 40 | 0.6% | 1.6% | +16 | +0.3pp |
| 75 to 79 | 23 | 0.4% | 1.1% | 29 | 0.5% | 0.9% | -6 | -0.1pp |
| 80 to 84 | 11 | 0.2% | 0.6% | 10 | 0.2% | 0.5% | +1 | 0.0pp |
| 85 and over | 4 | 0.1% | 0.4% | 12 | 0.2% | 0.3% | -8 | -0.1pp |
| Total | 6,281 | 100.0% | 100.0% | 6,188 | 100.0% | 100.0% | +93 | 0.0pp |