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, 30 to 34 year olds was the largest age group among residents in Acacia Ridge, accounting for 8.7% (652 people). This share was higher than Brisbane (C) (8.3%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 88 people and 1.1 percentage points.
Section overview
Age structure - Five year age groups
Acacia Ridge - Total persons (Usual residence)
This table summarises five year age groups for Acacia Ridge 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 Acacia Ridge, with comparison markers for Brisbane (C).
0 to 4
2021 count
551
% of total
7.4%
Change from 2016
-0.3pp
551
7.4%
-0.3pp
5 to 9
2021 count
556
% of total
7.4%
Change from 2016
+1.0pp
556
7.4%
+1.0pp
10 to 14
2021 count
459
% of total
6.1%
Change from 2016
+0.5pp
459
6.1%
+0.5pp
15 to 19
2021 count
405
% of total
5.4%
Change from 2016
-1.0pp
405
5.4%
-1.0pp
20 to 24
2021 count
525
% of total
7.0%
Change from 2016
-1.2pp
525
7.0%
-1.2pp
25 to 29
2021 count
643
% of total
8.6%
Change from 2016
+0.1pp
643
8.6%
+0.1pp
30 to 34
2021 count
652
% of total
8.7%
Change from 2016
+0.3pp
652
8.7%
+0.3pp
35 to 39
2021 count
569
% of total
7.6%
Change from 2016
+1.1pp
569
7.6%
+1.1pp
40 to 44
2021 count
429
% of total
5.7%
Change from 2016
-0.4pp
429
5.7%
-0.4pp
45 to 49
2021 count
421
% of total
5.6%
Change from 2016
-0.8pp
421
5.6%
-0.8pp
50 to 54
2021 count
433
% of total
5.8%
Change from 2016
+0.1pp
433
5.8%
+0.1pp
55 to 59
2021 count
406
% of total
5.4%
Change from 2016
+0.2pp
406
5.4%
+0.2pp
60 to 64
2021 count
351
% of total
4.7%
Change from 2016
+0.3pp
351
4.7%
+0.3pp
65 to 69
2021 count
309
% of total
4.1%
Change from 2016
-0.2pp
309
4.1%
-0.2pp
70 to 74
2021 count
265
% of total
3.5%
Change from 2016
0.0pp
265
3.5%
0.0pp
75 to 79
2021 count
212
% of total
2.8%
Change from 2016
0.0pp
212
2.8%
0.0pp
80 to 84
2021 count
153
% of total
2.0%
Change from 2016
+0.2pp
153
2.0%
+0.2pp
85 and over
2021 count
141
% of total
1.9%
Change from 2016
0.0pp
141
1.9%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-19
-0.3pp
5 to 9
+80
+1.0pp
10 to 14
+40
+0.5pp
15 to 19
-67
-1.0pp
20 to 24
-83
-1.2pp
25 to 29
+12
+0.1pp
30 to 34
+31
+0.3pp
35 to 39
+88
+1.1pp
40 to 44
-25
-0.4pp
45 to 49
-51
-0.8pp
50 to 54
+10
+0.1pp
55 to 59
+19
+0.2pp
60 to 64
+21
+0.3pp
65 to 69
-13
-0.2pp
70 to 74
+7
0.0pp
75 to 79
+2
0.0pp
80 to 84
+19
+0.2pp
85 and over
+1
0.0pp
Data table
Five year age groups for Acacia Ridge. 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 | 551 | 7.4% | 5.5% | 570 | 7.7% | 6.0% | -19 | -0.3pp |
| 5 to 9 | 556 | 7.4% | 6.0% | 476 | 6.4% | 6.0% | +80 | +1.0pp |
| 10 to 14 | 459 | 6.1% | 6.0% | 419 | 5.6% | 5.6% | +40 | +0.5pp |
| 15 to 19 | 405 | 5.4% | 6.0% | 472 | 6.4% | 6.2% | -67 | -1.0pp |
| 20 to 24 | 525 | 7.0% | 7.8% | 608 | 8.2% | 8.7% | -83 | -1.2pp |
| 25 to 29 | 643 | 8.6% | 8.4% | 631 | 8.5% | 8.8% | +12 | +0.1pp |
| 30 to 34 | 652 | 8.7% | 8.3% | 621 | 8.4% | 8.5% | +31 | +0.3pp |
| 35 to 39 | 569 | 7.6% | 8.1% | 481 | 6.5% | 7.4% | +88 | +1.1pp |
| 40 to 44 | 429 | 5.7% | 7.1% | 454 | 6.1% | 7.3% | -25 | -0.4pp |
| 45 to 49 | 421 | 5.6% | 6.8% | 472 | 6.4% | 6.9% | -51 | -0.8pp |
| 50 to 54 | 433 | 5.8% | 6.3% | 423 | 5.7% | 6.1% | +10 | +0.1pp |
| 55 to 59 | 406 | 5.4% | 5.5% | 387 | 5.2% | 5.4% | +19 | +0.2pp |
| 60 to 64 | 351 | 4.7% | 4.8% | 330 | 4.4% | 4.6% | +21 | +0.3pp |
| 65 to 69 | 309 | 4.1% | 4.0% | 322 | 4.3% | 4.0% | -13 | -0.2pp |
| 70 to 74 | 265 | 3.5% | 3.5% | 258 | 3.5% | 2.9% | +7 | 0.0pp |
| 75 to 79 | 212 | 2.8% | 2.5% | 210 | 2.8% | 2.2% | +2 | 0.0pp |
| 80 to 84 | 153 | 2.0% | 1.7% | 134 | 1.8% | 1.6% | +19 | +0.2pp |
| 85 and over | 141 | 1.9% | 1.8% | 140 | 1.9% | 1.8% | +1 | 0.0pp |
| Total | 7,486 | 100.0% | 100.0% | 7,421 | 100.0% | 100.0% | +65 | 0.0pp |