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, 10 to 14 year olds was the largest age group among residents in Gumdale, accounting for 10.2% (234 people). This share was higher than Brisbane (C) (6%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 49 people and 2 percentage points.
Section overview
Age structure - Five year age groups
Gumdale - Total persons (Usual residence)
This table summarises five year age groups for Gumdale 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 Gumdale, with comparison markers for Brisbane (C).
0 to 4
2021 count
128
% of total
5.6%
Change from 2016
-0.6pp
128
5.6%
-0.6pp
5 to 9
2021 count
222
% of total
9.7%
Change from 2016
+0.2pp
222
9.7%
+0.2pp
10 to 14
2021 count
234
% of total
10.2%
Change from 2016
+1.0pp
234
10.2%
+1.0pp
15 to 19
2021 count
207
% of total
9.0%
Change from 2016
+0.3pp
207
9.0%
+0.3pp
20 to 24
2021 count
135
% of total
5.9%
Change from 2016
+0.4pp
135
5.9%
+0.4pp
25 to 29
2021 count
77
% of total
3.4%
Change from 2016
-1.0pp
77
3.4%
-1.0pp
30 to 34
2021 count
83
% of total
3.6%
Change from 2016
-1.3pp
83
3.6%
-1.3pp
35 to 39
2021 count
159
% of total
6.9%
Change from 2016
-0.7pp
159
6.9%
-0.7pp
40 to 44
2021 count
217
% of total
9.4%
Change from 2016
+0.5pp
217
9.4%
+0.5pp
45 to 49
2021 count
202
% of total
8.8%
Change from 2016
+0.1pp
202
8.8%
+0.1pp
50 to 54
2021 count
155
% of total
6.7%
Change from 2016
+0.6pp
155
6.7%
+0.6pp
55 to 59
2021 count
129
% of total
5.6%
Change from 2016
+0.2pp
129
5.6%
+0.2pp
60 to 64
2021 count
98
% of total
4.3%
Change from 2016
-1.4pp
98
4.3%
-1.4pp
65 to 69
2021 count
86
% of total
3.7%
Change from 2016
+0.4pp
86
3.7%
+0.4pp
70 to 74
2021 count
88
% of total
3.8%
Change from 2016
+2.0pp
88
3.8%
+2.0pp
75 to 79
2021 count
41
% of total
1.8%
Change from 2016
-0.6pp
41
1.8%
-0.6pp
80 to 84
2021 count
27
% of total
1.2%
Change from 2016
+0.4pp
27
1.2%
+0.4pp
85 and over
2021 count
15
% of total
0.7%
Change from 2016
-0.1pp
15
0.7%
-0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-4
-0.6pp
5 to 9
+21
+0.2pp
10 to 14
+39
+1.0pp
15 to 19
+22
+0.3pp
20 to 24
+18
+0.4pp
25 to 29
-17
-1.0pp
30 to 34
-21
-1.3pp
35 to 39
-3
-0.7pp
40 to 44
+29
+0.5pp
45 to 49
+18
+0.1pp
50 to 54
+26
+0.6pp
55 to 59
+14
+0.2pp
60 to 64
-23
-1.4pp
65 to 69
+16
+0.4pp
70 to 74
+49
+2.0pp
75 to 79
-9
-0.6pp
80 to 84
+11
+0.4pp
85 and over
-1
-0.1pp
Data table
Five year age groups for Gumdale. 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 | 128 | 5.6% | 5.5% | 132 | 6.2% | 6.0% | -4 | -0.6pp |
| 5 to 9 | 222 | 9.7% | 6.0% | 201 | 9.5% | 6.0% | +21 | +0.2pp |
| 10 to 14 | 234 | 10.2% | 6.0% | 195 | 9.2% | 5.6% | +39 | +1.0pp |
| 15 to 19 | 207 | 9.0% | 6.0% | 185 | 8.7% | 6.2% | +22 | +0.3pp |
| 20 to 24 | 135 | 5.9% | 7.8% | 117 | 5.5% | 8.7% | +18 | +0.4pp |
| 25 to 29 | 77 | 3.4% | 8.4% | 94 | 4.4% | 8.8% | -17 | -1.0pp |
| 30 to 34 | 83 | 3.6% | 8.3% | 104 | 4.9% | 8.5% | -21 | -1.3pp |
| 35 to 39 | 159 | 6.9% | 8.1% | 162 | 7.6% | 7.4% | -3 | -0.7pp |
| 40 to 44 | 217 | 9.4% | 7.1% | 188 | 8.9% | 7.3% | +29 | +0.5pp |
| 45 to 49 | 202 | 8.8% | 6.8% | 184 | 8.7% | 6.9% | +18 | +0.1pp |
| 50 to 54 | 155 | 6.7% | 6.3% | 129 | 6.1% | 6.1% | +26 | +0.6pp |
| 55 to 59 | 129 | 5.6% | 5.5% | 115 | 5.4% | 5.4% | +14 | +0.2pp |
| 60 to 64 | 98 | 4.3% | 4.8% | 121 | 5.7% | 4.6% | -23 | -1.4pp |
| 65 to 69 | 86 | 3.7% | 4.0% | 70 | 3.3% | 4.0% | +16 | +0.4pp |
| 70 to 74 | 88 | 3.8% | 3.5% | 39 | 1.8% | 2.9% | +49 | +2.0pp |
| 75 to 79 | 41 | 1.8% | 2.5% | 50 | 2.4% | 2.2% | -9 | -0.6pp |
| 80 to 84 | 27 | 1.2% | 1.7% | 16 | 0.8% | 1.6% | +11 | +0.4pp |
| 85 and over | 15 | 0.7% | 1.8% | 16 | 0.8% | 1.8% | -1 | -0.1pp |
| Total | 2,298 | 100.0% | 100.0% | 2,118 | 100.0% | 100.0% | +180 | 0.0pp |