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, 85 and over year olds was the largest age group among residents in Pinjarra Hills, accounting for 28.3% (218 people). This share was higher than Brisbane (C) (1.8%). Since 2016, the biggest change was in 85 and over year olds, which increased by 99 people and 8.7 percentage points.
Section overview
Age structure - Five year age groups
Pinjarra Hills - Total persons (Usual residence)
This table summarises five year age groups for Pinjarra Hills 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 Pinjarra Hills, with comparison markers for Brisbane (C).
0 to 4
2021 count
18
% of total
2.3%
Change from 2016
-0.5pp
18
2.3%
-0.5pp
5 to 9
2021 count
23
% of total
3.0%
Change from 2016
-2.8pp
23
3.0%
-2.8pp
10 to 14
2021 count
39
% of total
5.1%
Change from 2016
+0.8pp
39
5.1%
+0.8pp
15 to 19
2021 count
31
% of total
4.0%
Change from 2016
+0.2pp
31
4.0%
+0.2pp
20 to 24
2021 count
24
% of total
3.1%
Change from 2016
-1.9pp
24
3.1%
-1.9pp
25 to 29
2021 count
10
% of total
1.3%
Change from 2016
-1.2pp
10
1.3%
-1.2pp
30 to 34
2021 count
20
% of total
2.6%
Change from 2016
+0.6pp
20
2.6%
+0.6pp
35 to 39
2021 count
25
% of total
3.2%
Change from 2016
-1.3pp
25
3.2%
-1.3pp
40 to 44
2021 count
38
% of total
4.9%
Change from 2016
+2.3pp
38
4.9%
+2.3pp
45 to 49
2021 count
35
% of total
4.5%
Change from 2016
+1.5pp
35
4.5%
+1.5pp
50 to 54
2021 count
38
% of total
4.9%
Change from 2016
-1.0pp
38
4.9%
-1.0pp
55 to 59
2021 count
40
% of total
5.2%
Change from 2016
-0.6pp
40
5.2%
-0.6pp
60 to 64
2021 count
42
% of total
5.4%
Change from 2016
+0.1pp
42
5.4%
+0.1pp
65 to 69
2021 count
37
% of total
4.8%
Change from 2016
-0.5pp
37
4.8%
-0.5pp
70 to 74
2021 count
50
% of total
6.5%
Change from 2016
-0.3pp
50
6.5%
-0.3pp
75 to 79
2021 count
60
% of total
7.8%
Change from 2016
+1.7pp
60
7.8%
+1.7pp
80 to 84
2021 count
64
% of total
8.3%
Change from 2016
+1.5pp
64
8.3%
+1.5pp
85 and over
2021 count
218
% of total
28.3%
Change from 2016
+8.7pp
218
28.3%
+8.7pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+1
-0.5pp
5 to 9
-12
-2.8pp
10 to 14
+13
+0.8pp
15 to 19
+8
+0.2pp
20 to 24
-6
-1.9pp
25 to 29
-5
-1.2pp
30 to 34
+8
+0.6pp
35 to 39
-2
-1.3pp
40 to 44
+22
+2.3pp
45 to 49
+17
+1.5pp
50 to 54
+2
-1.0pp
55 to 59
+5
-0.6pp
60 to 64
+10
+0.1pp
65 to 69
+5
-0.5pp
70 to 74
+9
-0.3pp
75 to 79
+23
+1.7pp
80 to 84
+23
+1.5pp
85 and over
+99
+8.7pp
Data table
Five year age groups for Pinjarra Hills. 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 | 18 | 2.3% | 5.5% | 17 | 2.8% | 6.0% | +1 | -0.5pp |
| 5 to 9 | 23 | 3.0% | 6.0% | 35 | 5.8% | 6.0% | -12 | -2.8pp |
| 10 to 14 | 39 | 5.1% | 6.0% | 26 | 4.3% | 5.6% | +13 | +0.8pp |
| 15 to 19 | 31 | 4.0% | 6.0% | 23 | 3.8% | 6.2% | +8 | +0.2pp |
| 20 to 24 | 24 | 3.1% | 7.8% | 30 | 5.0% | 8.7% | -6 | -1.9pp |
| 25 to 29 | 10 | 1.3% | 8.4% | 15 | 2.5% | 8.8% | -5 | -1.2pp |
| 30 to 34 | 20 | 2.6% | 8.3% | 12 | 2.0% | 8.5% | +8 | +0.6pp |
| 35 to 39 | 25 | 3.2% | 8.1% | 27 | 4.5% | 7.4% | -2 | -1.3pp |
| 40 to 44 | 38 | 4.9% | 7.1% | 16 | 2.6% | 7.3% | +22 | +2.3pp |
| 45 to 49 | 35 | 4.5% | 6.8% | 18 | 3.0% | 6.9% | +17 | +1.5pp |
| 50 to 54 | 38 | 4.9% | 6.3% | 36 | 5.9% | 6.1% | +2 | -1.0pp |
| 55 to 59 | 40 | 5.2% | 5.5% | 35 | 5.8% | 5.4% | +5 | -0.6pp |
| 60 to 64 | 42 | 5.4% | 4.8% | 32 | 5.3% | 4.6% | +10 | +0.1pp |
| 65 to 69 | 37 | 4.8% | 4.0% | 32 | 5.3% | 4.0% | +5 | -0.5pp |
| 70 to 74 | 50 | 6.5% | 3.5% | 41 | 6.8% | 2.9% | +9 | -0.3pp |
| 75 to 79 | 60 | 7.8% | 2.5% | 37 | 6.1% | 2.2% | +23 | +1.7pp |
| 80 to 84 | 64 | 8.3% | 1.7% | 41 | 6.8% | 1.6% | +23 | +1.5pp |
| 85 and over | 218 | 28.3% | 1.8% | 119 | 19.6% | 1.8% | +99 | +8.7pp |
| Total | 771 | 100.0% | 100.0% | 606 | 100.0% | 100.0% | +165 | 0.0pp |