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 South Brisbane, accounting for 17.8% (2,544 people). This share was higher than Brisbane (C) (7.8%). Since 2016, the biggest change was in 20 to 24 year olds, which increased by 1,384 people and 1.8 percentage points.
Section overview
Age structure - Five year age groups
South Brisbane - Total persons (Usual residence)
This table summarises five year age groups for South Brisbane in 2021 for persons, with comparison against Brisbane (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for South Brisbane, with comparison markers for Brisbane (C).
0 to 4
2021 count
358
% of total
2.5%
Change from 2016
0.0pp
358
2.5%
0.0pp
5 to 9
2021 count
317
% of total
2.2%
Change from 2016
+0.3pp
317
2.2%
+0.3pp
10 to 14
2021 count
478
% of total
3.3%
Change from 2016
-0.9pp
478
3.3%
-0.9pp
15 to 19
2021 count
1,137
% of total
8.0%
Change from 2016
+1.3pp
1,137
8.0%
+1.3pp
20 to 24
2021 count
2,544
% of total
17.8%
Change from 2016
+1.8pp
2,544
17.8%
+1.8pp
25 to 29
2021 count
2,404
% of total
16.8%
Change from 2016
-0.6pp
2,404
16.8%
-0.6pp
30 to 34
2021 count
1,834
% of total
12.8%
Change from 2016
+0.4pp
1,834
12.8%
+0.4pp
35 to 39
2021 count
1,217
% of total
8.5%
Change from 2016
+0.6pp
1,217
8.5%
+0.6pp
40 to 44
2021 count
867
% of total
6.1%
Change from 2016
-0.6pp
867
6.1%
-0.6pp
45 to 49
2021 count
745
% of total
5.2%
Change from 2016
+0.1pp
745
5.2%
+0.1pp
50 to 54
2021 count
650
% of total
4.5%
Change from 2016
+0.3pp
650
4.5%
+0.3pp
55 to 59
2021 count
470
% of total
3.3%
Change from 2016
-0.8pp
470
3.3%
-0.8pp
60 to 64
2021 count
364
% of total
2.5%
Change from 2016
-0.8pp
364
2.5%
-0.8pp
65 to 69
2021 count
332
% of total
2.3%
Change from 2016
-0.2pp
332
2.3%
-0.2pp
70 to 74
2021 count
241
% of total
1.7%
Change from 2016
-0.1pp
241
1.7%
-0.1pp
75 to 79
2021 count
148
% of total
1.0%
Change from 2016
-0.4pp
148
1.0%
-0.4pp
80 to 84
2021 count
118
% of total
0.8%
Change from 2016
+0.2pp
118
0.8%
+0.2pp
85 and over
2021 count
82
% of total
0.6%
Change from 2016
-0.1pp
82
0.6%
-0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+175
0.0pp
5 to 9
+179
+0.3pp
10 to 14
+176
-0.9pp
15 to 19
+654
+1.3pp
20 to 24
+1,384
+1.8pp
25 to 29
+1,142
-0.6pp
30 to 34
+937
+0.4pp
35 to 39
+642
+0.6pp
40 to 44
+385
-0.6pp
45 to 49
+373
+0.1pp
50 to 54
+347
+0.3pp
55 to 59
+172
-0.8pp
60 to 64
+128
-0.8pp
65 to 69
+150
-0.2pp
70 to 74
+113
-0.1pp
75 to 79
+46
-0.4pp
80 to 84
+73
+0.2pp
85 and over
+31
-0.1pp
Data table
Five year age groups for South Brisbane. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Brisbane (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Brisbane (C)% | Count | % | Brisbane (C)% | Count | pp | |
| 0 to 4 | 358 | 2.5% | 5.5% | 183 | 2.5% | 6.0% | +175 | 0.0pp |
| 5 to 9 | 317 | 2.2% | 6.0% | 138 | 1.9% | 6.0% | +179 | +0.3pp |
| 10 to 14 | 478 | 3.3% | 6.0% | 302 | 4.2% | 5.6% | +176 | -0.9pp |
| 15 to 19 | 1,137 | 8.0% | 6.0% | 483 | 6.7% | 6.2% | +654 | +1.3pp |
| 20 to 24 | 2,544 | 17.8% | 7.8% | 1,160 | 16.0% | 8.7% | +1,384 | +1.8pp |
| 25 to 29 | 2,404 | 16.8% | 8.4% | 1,262 | 17.4% | 8.8% | +1,142 | -0.6pp |
| 30 to 34 | 1,834 | 12.8% | 8.3% | 897 | 12.4% | 8.5% | +937 | +0.4pp |
| 35 to 39 | 1,217 | 8.5% | 8.1% | 575 | 7.9% | 7.4% | +642 | +0.6pp |
| 40 to 44 | 867 | 6.1% | 7.1% | 482 | 6.7% | 7.3% | +385 | -0.6pp |
| 45 to 49 | 745 | 5.2% | 6.8% | 372 | 5.1% | 6.9% | +373 | +0.1pp |
| 50 to 54 | 650 | 4.5% | 6.3% | 303 | 4.2% | 6.1% | +347 | +0.3pp |
| 55 to 59 | 470 | 3.3% | 5.5% | 298 | 4.1% | 5.4% | +172 | -0.8pp |
| 60 to 64 | 364 | 2.5% | 4.8% | 236 | 3.3% | 4.6% | +128 | -0.8pp |
| 65 to 69 | 332 | 2.3% | 4.0% | 182 | 2.5% | 4.0% | +150 | -0.2pp |
| 70 to 74 | 241 | 1.7% | 3.5% | 128 | 1.8% | 2.9% | +113 | -0.1pp |
| 75 to 79 | 148 | 1.0% | 2.5% | 102 | 1.4% | 2.2% | +46 | -0.4pp |
| 80 to 84 | 118 | 0.8% | 1.7% | 45 | 0.6% | 1.6% | +73 | +0.2pp |
| 85 and over | 82 | 0.6% | 1.8% | 51 | 0.7% | 1.8% | +31 | -0.1pp |
| Total | 14,292 | 100.0% | 100.0% | 7,238 | 100.0% | 100.0% | +7,054 | 0.0pp |