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, 15 to 19 year olds was the largest age group among residents in East Arnhem (R), accounting for 10.6% (934 people). This share was higher than Regional NT (7.2%). Since 2016, the biggest change was in 10 to 14 year olds, which decreased by 219 people and 2.2 percentage points.
Section overview
Age structure - Five year age groups
East Arnhem (R) - Total persons (Usual residence)
This table summarises five year age groups for East Arnhem (R) in 2021 for persons, with comparison against Regional NT and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for East Arnhem (R), with comparison markers for Regional NT.
0 to 4
2021 count
648
% of total
7.4%
Change from 2016
-1.3pp
648
7.4%
-1.3pp
5 to 9
2021 count
664
% of total
7.6%
Change from 2016
-2.0pp
664
7.6%
-2.0pp
10 to 14
2021 count
723
% of total
8.2%
Change from 2016
-2.2pp
723
8.2%
-2.2pp
15 to 19
2021 count
934
% of total
10.6%
Change from 2016
-0.3pp
934
10.6%
-0.3pp
20 to 24
2021 count
933
% of total
10.6%
Change from 2016
+1.6pp
933
10.6%
+1.6pp
25 to 29
2021 count
781
% of total
8.9%
Change from 2016
-0.1pp
781
8.9%
-0.1pp
30 to 34
2021 count
796
% of total
9.1%
Change from 2016
+0.3pp
796
9.1%
+0.3pp
35 to 39
2021 count
695
% of total
7.9%
Change from 2016
+0.8pp
695
7.9%
+0.8pp
40 to 44
2021 count
593
% of total
6.8%
Change from 2016
+0.2pp
593
6.8%
+0.2pp
45 to 49
2021 count
495
% of total
5.6%
Change from 2016
+0.3pp
495
5.6%
+0.3pp
50 to 54
2021 count
473
% of total
5.4%
Change from 2016
+0.7pp
473
5.4%
+0.7pp
55 to 59
2021 count
390
% of total
4.4%
Change from 2016
+0.6pp
390
4.4%
+0.6pp
60 to 64
2021 count
314
% of total
3.6%
Change from 2016
+0.8pp
314
3.6%
+0.8pp
65 to 69
2021 count
197
% of total
2.2%
Change from 2016
+0.8pp
197
2.2%
+0.8pp
70 to 74
2021 count
83
% of total
0.9%
Change from 2016
0.0pp
83
0.9%
0.0pp
75 to 79
2021 count
45
% of total
0.5%
Change from 2016
+0.2pp
45
0.5%
+0.2pp
80 to 84
2021 count
22
% of total
0.3%
Change from 2016
+0.1pp
22
0.3%
+0.1pp
85 and over
2021 count
8
% of total
0.1%
Change from 2016
0.0pp
8
0.1%
0.0pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-136
-1.3pp
5 to 9
-202
-2.0pp
10 to 14
-219
-2.2pp
15 to 19
-53
-0.3pp
20 to 24
+118
+1.6pp
25 to 29
-35
-0.1pp
30 to 34
-1
+0.3pp
35 to 39
+53
+0.8pp
40 to 44
-6
+0.2pp
45 to 49
+13
+0.3pp
50 to 54
+48
+0.7pp
55 to 59
+49
+0.6pp
60 to 64
+61
+0.8pp
65 to 69
+70
+0.8pp
70 to 74
+3
0.0pp
75 to 79
+14
+0.2pp
80 to 84
+6
+0.1pp
85 and over
0
0.0pp
Data table
Five year age groups for East 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 | 648 | 7.4% | 7.3% | 784 | 8.7% | 8.3% | -136 | -1.3pp |
| 5 to 9 | 664 | 7.6% | 7.8% | 866 | 9.6% | 8.4% | -202 | -2.0pp |
| 10 to 14 | 723 | 8.2% | 7.5% | 942 | 10.4% | 7.7% | -219 | -2.2pp |
| 15 to 19 | 934 | 10.6% | 7.2% | 987 | 10.9% | 7.2% | -53 | -0.3pp |
| 20 to 24 | 933 | 10.6% | 7.4% | 815 | 9.0% | 7.7% | +118 | +1.6pp |
| 25 to 29 | 781 | 8.9% | 9.0% | 816 | 9.0% | 8.9% | -35 | -0.1pp |
| 30 to 34 | 796 | 9.1% | 9.2% | 797 | 8.8% | 8.6% | -1 | +0.3pp |
| 35 to 39 | 695 | 7.9% | 8.1% | 642 | 7.1% | 7.1% | +53 | +0.8pp |
| 40 to 44 | 593 | 6.8% | 6.6% | 599 | 6.6% | 6.8% | -6 | +0.2pp |
| 45 to 49 | 495 | 5.6% | 6.1% | 482 | 5.3% | 6.9% | +13 | +0.3pp |
| 50 to 54 | 473 | 5.4% | 6.2% | 425 | 4.7% | 6.4% | +48 | +0.7pp |
| 55 to 59 | 390 | 4.4% | 5.4% | 341 | 3.8% | 5.5% | +49 | +0.6pp |
| 60 to 64 | 314 | 3.6% | 4.7% | 253 | 2.8% | 4.4% | +61 | +0.8pp |
| 65 to 69 | 197 | 2.2% | 3.3% | 127 | 1.4% | 2.8% | +70 | +0.8pp |
| 70 to 74 | 83 | 0.9% | 2.1% | 80 | 0.9% | 1.6% | +3 | 0.0pp |
| 75 to 79 | 45 | 0.5% | 1.1% | 31 | 0.3% | 0.9% | +14 | +0.2pp |
| 80 to 84 | 22 | 0.3% | 0.6% | 16 | 0.2% | 0.5% | +6 | +0.1pp |
| 85 and over | 8 | 0.1% | 0.4% | 8 | 0.1% | 0.3% | 0 | 0.0pp |
| Total | 8,778 | 100.0% | 100.0% | 9,026 | 100.0% | 100.0% | -248 | 0.0pp |