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 Fairfield (Qld), accounting for 12.6% (390 people). This share was higher than Brisbane (C) (7.8%). Since 2016, the biggest change was in 20 to 24 year olds, which decreased by 106 people and 4 percentage points.
Section overview
Age structure - Five year age groups
Fairfield (Qld) - Total persons (Usual residence)
This table summarises five year age groups for Fairfield (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 Fairfield (Qld), with comparison markers for Brisbane (C).
0 to 4
2021 count
165
% of total
5.3%
Change from 2016
+0.9pp
165
5.3%
+0.9pp
5 to 9
2021 count
133
% of total
4.3%
Change from 2016
-0.3pp
133
4.3%
-0.3pp
10 to 14
2021 count
134
% of total
4.3%
Change from 2016
+0.3pp
134
4.3%
+0.3pp
15 to 19
2021 count
173
% of total
5.6%
Change from 2016
-0.7pp
173
5.6%
-0.7pp
20 to 24
2021 count
390
% of total
12.6%
Change from 2016
-4.0pp
390
12.6%
-4.0pp
25 to 29
2021 count
384
% of total
12.4%
Change from 2016
-0.8pp
384
12.4%
-0.8pp
30 to 34
2021 count
326
% of total
10.5%
Change from 2016
+1.5pp
326
10.5%
+1.5pp
35 to 39
2021 count
278
% of total
9.0%
Change from 2016
+2.6pp
278
9.0%
+2.6pp
40 to 44
2021 count
201
% of total
6.5%
Change from 2016
0.0pp
201
6.5%
0.0pp
45 to 49
2021 count
184
% of total
5.9%
Change from 2016
-0.3pp
184
5.9%
-0.3pp
50 to 54
2021 count
196
% of total
6.3%
Change from 2016
-0.4pp
196
6.3%
-0.4pp
55 to 59
2021 count
171
% of total
5.5%
Change from 2016
+0.2pp
171
5.5%
+0.2pp
60 to 64
2021 count
122
% of total
3.9%
Change from 2016
+0.3pp
122
3.9%
+0.3pp
65 to 69
2021 count
94
% of total
3.0%
Change from 2016
+0.5pp
94
3.0%
+0.5pp
70 to 74
2021 count
64
% of total
2.1%
Change from 2016
+0.8pp
64
2.1%
+0.8pp
75 to 79
2021 count
27
% of total
0.9%
Change from 2016
-0.6pp
27
0.9%
-0.6pp
80 to 84
2021 count
31
% of total
1.0%
Change from 2016
0.0pp
31
1.0%
0.0pp
85 and over
2021 count
29
% of total
0.9%
Change from 2016
-0.1pp
29
0.9%
-0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+34
+0.9pp
5 to 9
-3
-0.3pp
10 to 14
+14
+0.3pp
15 to 19
-16
-0.7pp
20 to 24
-106
-4.0pp
25 to 29
-9
-0.8pp
30 to 34
+57
+1.5pp
35 to 39
+86
+2.6pp
40 to 44
+6
0.0pp
45 to 49
-1
-0.3pp
50 to 54
-5
-0.4pp
55 to 59
+12
+0.2pp
60 to 64
+15
+0.3pp
65 to 69
+20
+0.5pp
70 to 74
+24
+0.8pp
75 to 79
-17
-0.6pp
80 to 84
+2
0.0pp
85 and over
-2
-0.1pp
Data table
Five year age groups for Fairfield (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 | 165 | 5.3% | 5.5% | 131 | 4.4% | 6.0% | +34 | +0.9pp |
| 5 to 9 | 133 | 4.3% | 6.0% | 136 | 4.6% | 6.0% | -3 | -0.3pp |
| 10 to 14 | 134 | 4.3% | 6.0% | 120 | 4.0% | 5.6% | +14 | +0.3pp |
| 15 to 19 | 173 | 5.6% | 6.0% | 189 | 6.3% | 6.2% | -16 | -0.7pp |
| 20 to 24 | 390 | 12.6% | 7.8% | 496 | 16.6% | 8.7% | -106 | -4.0pp |
| 25 to 29 | 384 | 12.4% | 8.4% | 393 | 13.2% | 8.8% | -9 | -0.8pp |
| 30 to 34 | 326 | 10.5% | 8.3% | 269 | 9.0% | 8.5% | +57 | +1.5pp |
| 35 to 39 | 278 | 9.0% | 8.1% | 192 | 6.4% | 7.4% | +86 | +2.6pp |
| 40 to 44 | 201 | 6.5% | 7.1% | 195 | 6.5% | 7.3% | +6 | 0.0pp |
| 45 to 49 | 184 | 5.9% | 6.8% | 185 | 6.2% | 6.9% | -1 | -0.3pp |
| 50 to 54 | 196 | 6.3% | 6.3% | 201 | 6.7% | 6.1% | -5 | -0.4pp |
| 55 to 59 | 171 | 5.5% | 5.5% | 159 | 5.3% | 5.4% | +12 | +0.2pp |
| 60 to 64 | 122 | 3.9% | 4.8% | 107 | 3.6% | 4.6% | +15 | +0.3pp |
| 65 to 69 | 94 | 3.0% | 4.0% | 74 | 2.5% | 4.0% | +20 | +0.5pp |
| 70 to 74 | 64 | 2.1% | 3.5% | 40 | 1.3% | 2.9% | +24 | +0.8pp |
| 75 to 79 | 27 | 0.9% | 2.5% | 44 | 1.5% | 2.2% | -17 | -0.6pp |
| 80 to 84 | 31 | 1.0% | 1.7% | 29 | 1.0% | 1.6% | +2 | 0.0pp |
| 85 and over | 29 | 0.9% | 1.8% | 31 | 1.0% | 1.8% | -2 | -0.1pp |
| Total | 3,106 | 100.0% | 100.0% | 2,980 | 100.0% | 100.0% | +126 | 0.0pp |