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, 20 to 24 year olds was the largest age group among residents in Roper Gulf (R), accounting for 10.6% (685 people). This share was higher than Regional NT (7.4%). Since 2016, the biggest change was in 0 to 4 year olds, which decreased by 221 people and 3.3 percentage points.
Section overview
Age structure - Five year age groups
Roper Gulf (R) - Total persons (Usual residence)
This table summarises five year age groups for Roper Gulf (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 Roper Gulf (R), with comparison markers for Regional NT.
0 to 4
2021 count
439
% of total
6.8%
Change from 2016
-3.3pp
439
6.8%
-3.3pp
5 to 9
2021 count
490
% of total
7.6%
Change from 2016
-2.2pp
490
7.6%
-2.2pp
10 to 14
2021 count
564
% of total
8.7%
Change from 2016
0.0pp
564
8.7%
0.0pp
15 to 19
2021 count
566
% of total
8.7%
Change from 2016
-0.6pp
566
8.7%
-0.6pp
20 to 24
2021 count
685
% of total
10.6%
Change from 2016
+2.4pp
685
10.6%
+2.4pp
25 to 29
2021 count
582
% of total
9.0%
Change from 2016
-0.6pp
582
9.0%
-0.6pp
30 to 34
2021 count
578
% of total
8.9%
Change from 2016
+1.1pp
578
8.9%
+1.1pp
35 to 39
2021 count
494
% of total
7.6%
Change from 2016
+1.1pp
494
7.6%
+1.1pp
40 to 44
2021 count
387
% of total
6.0%
Change from 2016
+0.3pp
387
6.0%
+0.3pp
45 to 49
2021 count
353
% of total
5.4%
Change from 2016
-1.1pp
353
5.4%
-1.1pp
50 to 54
2021 count
403
% of total
6.2%
Change from 2016
+1.2pp
403
6.2%
+1.2pp
55 to 59
2021 count
310
% of total
4.8%
Change from 2016
+0.3pp
310
4.8%
+0.3pp
60 to 64
2021 count
258
% of total
4.0%
Change from 2016
+0.6pp
258
4.0%
+0.6pp
65 to 69
2021 count
190
% of total
2.9%
Change from 2016
+0.6pp
190
2.9%
+0.6pp
70 to 74
2021 count
122
% of total
1.9%
Change from 2016
+0.4pp
122
1.9%
+0.4pp
75 to 79
2021 count
60
% of total
0.9%
Change from 2016
+0.3pp
60
0.9%
+0.3pp
80 to 84
2021 count
25
% of total
0.4%
Change from 2016
+0.1pp
25
0.4%
+0.1pp
85 and over
2021 count
9
% of total
0.1%
Change from 2016
+0.1pp
9
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
-221
-3.3pp
5 to 9
-147
-2.2pp
10 to 14
-4
0.0pp
15 to 19
-40
-0.6pp
20 to 24
+150
+2.4pp
25 to 29
-40
-0.6pp
30 to 34
+70
+1.1pp
35 to 39
+71
+1.1pp
40 to 44
+18
+0.3pp
45 to 49
-70
-1.1pp
50 to 54
+77
+1.2pp
55 to 59
+16
+0.3pp
60 to 64
+34
+0.6pp
65 to 69
+38
+0.6pp
70 to 74
+27
+0.4pp
75 to 79
+20
+0.3pp
80 to 84
+3
+0.1pp
85 and over
+6
+0.1pp
Data table
Five year age groups for Roper Gulf (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 | 439 | 6.8% | 7.3% | 660 | 10.1% | 8.3% | -221 | -3.3pp |
| 5 to 9 | 490 | 7.6% | 7.8% | 637 | 9.8% | 8.4% | -147 | -2.2pp |
| 10 to 14 | 564 | 8.7% | 7.5% | 568 | 8.7% | 7.7% | -4 | 0.0pp |
| 15 to 19 | 566 | 8.7% | 7.2% | 606 | 9.3% | 7.2% | -40 | -0.6pp |
| 20 to 24 | 685 | 10.6% | 7.4% | 535 | 8.2% | 7.7% | +150 | +2.4pp |
| 25 to 29 | 582 | 9.0% | 9.0% | 622 | 9.6% | 8.9% | -40 | -0.6pp |
| 30 to 34 | 578 | 8.9% | 9.2% | 508 | 7.8% | 8.6% | +70 | +1.1pp |
| 35 to 39 | 494 | 7.6% | 8.1% | 423 | 6.5% | 7.1% | +71 | +1.1pp |
| 40 to 44 | 387 | 6.0% | 6.6% | 369 | 5.7% | 6.8% | +18 | +0.3pp |
| 45 to 49 | 353 | 5.4% | 6.1% | 423 | 6.5% | 6.9% | -70 | -1.1pp |
| 50 to 54 | 403 | 6.2% | 6.2% | 326 | 5.0% | 6.4% | +77 | +1.2pp |
| 55 to 59 | 310 | 4.8% | 5.4% | 294 | 4.5% | 5.5% | +16 | +0.3pp |
| 60 to 64 | 258 | 4.0% | 4.7% | 224 | 3.4% | 4.4% | +34 | +0.6pp |
| 65 to 69 | 190 | 2.9% | 3.3% | 152 | 2.3% | 2.8% | +38 | +0.6pp |
| 70 to 74 | 122 | 1.9% | 2.1% | 95 | 1.5% | 1.6% | +27 | +0.4pp |
| 75 to 79 | 60 | 0.9% | 1.1% | 40 | 0.6% | 0.9% | +20 | +0.3pp |
| 80 to 84 | 25 | 0.4% | 0.6% | 22 | 0.3% | 0.5% | +3 | +0.1pp |
| 85 and over | 9 | 0.1% | 0.4% | 3 | 0.0% | 0.3% | +6 | +0.1pp |
| Total | 6,486 | 100.0% | 100.0% | 6,505 | 100.0% | 100.0% | -19 | 0.0pp |