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 Richlands (Qld), accounting for 14.1% (791 people). This share was higher than Brisbane (C) (8.4%). Since 2016, the biggest change was in 25 to 29 year olds, which increased by 327 people and 1.2 percentage points.
Section overview
Age structure - Five year age groups
Richlands (Qld) - Total persons (Usual residence)
This table summarises five year age groups for Richlands (Qld) 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 Richlands (Qld), with comparison markers for Brisbane (C).
0 to 4
2021 count
580
% of total
10.3%
Change from 2016
+0.2pp
580
10.3%
+0.2pp
5 to 9
2021 count
397
% of total
7.1%
Change from 2016
-0.8pp
397
7.1%
-0.8pp
10 to 14
2021 count
294
% of total
5.2%
Change from 2016
-0.2pp
294
5.2%
-0.2pp
15 to 19
2021 count
270
% of total
4.8%
Change from 2016
-1.7pp
270
4.8%
-1.7pp
20 to 24
2021 count
643
% of total
11.4%
Change from 2016
+0.4pp
643
11.4%
+0.4pp
25 to 29
2021 count
791
% of total
14.1%
Change from 2016
+1.2pp
791
14.1%
+1.2pp
30 to 34
2021 count
718
% of total
12.8%
Change from 2016
+1.0pp
718
12.8%
+1.0pp
35 to 39
2021 count
514
% of total
9.1%
Change from 2016
+0.5pp
514
9.1%
+0.5pp
40 to 44
2021 count
314
% of total
5.6%
Change from 2016
-0.5pp
314
5.6%
-0.5pp
45 to 49
2021 count
272
% of total
4.8%
Change from 2016
-0.4pp
272
4.8%
-0.4pp
50 to 54
2021 count
234
% of total
4.2%
Change from 2016
-0.7pp
234
4.2%
-0.7pp
55 to 59
2021 count
205
% of total
3.6%
Change from 2016
+0.5pp
205
3.6%
+0.5pp
60 to 64
2021 count
152
% of total
2.7%
Change from 2016
+0.5pp
152
2.7%
+0.5pp
65 to 69
2021 count
85
% of total
1.5%
Change from 2016
-0.5pp
85
1.5%
-0.5pp
70 to 74
2021 count
66
% of total
1.2%
Change from 2016
+0.1pp
66
1.2%
+0.1pp
75 to 79
2021 count
50
% of total
0.9%
Change from 2016
-0.1pp
50
0.9%
-0.1pp
80 to 84
2021 count
21
% of total
0.4%
Change from 2016
-0.2pp
21
0.4%
-0.2pp
85 and over
2021 count
19
% of total
0.3%
Change from 2016
-0.2pp
19
0.3%
-0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+218
+0.2pp
5 to 9
+114
-0.8pp
10 to 14
+100
-0.2pp
15 to 19
+37
-1.7pp
20 to 24
+246
+0.4pp
25 to 29
+327
+1.2pp
30 to 34
+292
+1.0pp
35 to 39
+204
+0.5pp
40 to 44
+95
-0.5pp
45 to 49
+84
-0.4pp
50 to 54
+57
-0.7pp
55 to 59
+92
+0.5pp
60 to 64
+72
+0.5pp
65 to 69
+14
-0.5pp
70 to 74
+26
+0.1pp
75 to 79
+14
-0.1pp
80 to 84
+1
-0.2pp
85 and over
+2
-0.2pp
Data table
Five year age groups for Richlands (Qld). 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 | 580 | 10.3% | 5.5% | 362 | 10.1% | 6.0% | +218 | +0.2pp |
| 5 to 9 | 397 | 7.1% | 6.0% | 283 | 7.9% | 6.0% | +114 | -0.8pp |
| 10 to 14 | 294 | 5.2% | 6.0% | 194 | 5.4% | 5.6% | +100 | -0.2pp |
| 15 to 19 | 270 | 4.8% | 6.0% | 233 | 6.5% | 6.2% | +37 | -1.7pp |
| 20 to 24 | 643 | 11.4% | 7.8% | 397 | 11.0% | 8.7% | +246 | +0.4pp |
| 25 to 29 | 791 | 14.1% | 8.4% | 464 | 12.9% | 8.8% | +327 | +1.2pp |
| 30 to 34 | 718 | 12.8% | 8.3% | 426 | 11.8% | 8.5% | +292 | +1.0pp |
| 35 to 39 | 514 | 9.1% | 8.1% | 310 | 8.6% | 7.4% | +204 | +0.5pp |
| 40 to 44 | 314 | 5.6% | 7.1% | 219 | 6.1% | 7.3% | +95 | -0.5pp |
| 45 to 49 | 272 | 4.8% | 6.8% | 188 | 5.2% | 6.9% | +84 | -0.4pp |
| 50 to 54 | 234 | 4.2% | 6.3% | 177 | 4.9% | 6.1% | +57 | -0.7pp |
| 55 to 59 | 205 | 3.6% | 5.5% | 113 | 3.1% | 5.4% | +92 | +0.5pp |
| 60 to 64 | 152 | 2.7% | 4.8% | 80 | 2.2% | 4.6% | +72 | +0.5pp |
| 65 to 69 | 85 | 1.5% | 4.0% | 71 | 2.0% | 4.0% | +14 | -0.5pp |
| 70 to 74 | 66 | 1.2% | 3.5% | 40 | 1.1% | 2.9% | +26 | +0.1pp |
| 75 to 79 | 50 | 0.9% | 2.5% | 36 | 1.0% | 2.2% | +14 | -0.1pp |
| 80 to 84 | 21 | 0.4% | 1.7% | 20 | 0.6% | 1.6% | +1 | -0.2pp |
| 85 and over | 19 | 0.3% | 1.8% | 17 | 0.5% | 1.8% | +2 | -0.2pp |
| Total | 5,621 | 100.0% | 100.0% | 3,598 | 100.0% | 100.0% | +2,023 | 0.0pp |