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, 60 to 64 year olds was the largest age group among residents in Dandaragan, accounting for 11% (32 people). This share was higher than Dandaragan (S) (9.5%). Since 2016, the biggest change was in 40 to 44 year olds, which decreased by 26 people and 7.3 percentage points.
Section overview
Age structure - Five year age groups
Dandaragan - Total persons (Usual residence)
This table summarises five year age groups for Dandaragan in 2021 for persons, with comparison against Dandaragan (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Dandaragan, with comparison markers for Dandaragan (S).
0 to 4
2021 count
14
% of total
4.8%
Change from 2016
-1.7pp
14
4.8%
-1.7pp
5 to 9
2021 count
25
% of total
8.6%
Change from 2016
+5.1pp
25
8.6%
+5.1pp
10 to 14
2021 count
8
% of total
2.7%
Change from 2016
-2.9pp
8
2.7%
-2.9pp
15 to 19
2021 count
16
% of total
5.5%
Change from 2016
+4.6pp
16
5.5%
+4.6pp
20 to 24
2021 count
24
% of total
8.2%
Change from 2016
+2.3pp
24
8.2%
+2.3pp
25 to 29
2021 count
20
% of total
6.8%
Change from 2016
+0.9pp
20
6.8%
+0.9pp
30 to 34
2021 count
7
% of total
2.4%
Change from 2016
-0.5pp
7
2.4%
-0.5pp
35 to 39
2021 count
21
% of total
7.2%
Change from 2016
+2.2pp
21
7.2%
+2.2pp
40 to 44
2021 count
6
% of total
2.1%
Change from 2016
-7.3pp
6
2.1%
-7.3pp
45 to 49
2021 count
24
% of total
8.2%
Change from 2016
+3.2pp
24
8.2%
+3.2pp
50 to 54
2021 count
14
% of total
4.8%
Change from 2016
-2.3pp
14
4.8%
-2.3pp
55 to 59
2021 count
20
% of total
6.8%
Change from 2016
-6.1pp
20
6.8%
-6.1pp
60 to 64
2021 count
32
% of total
11.0%
Change from 2016
+2.2pp
32
11.0%
+2.2pp
65 to 69
2021 count
27
% of total
9.2%
Change from 2016
+3.9pp
27
9.2%
+3.9pp
70 to 74
2021 count
8
% of total
2.7%
Change from 2016
-6.7pp
8
2.7%
-6.7pp
75 to 79
2021 count
20
% of total
6.8%
Change from 2016
+4.2pp
20
6.8%
+4.2pp
80 to 84
2021 count
8
% of total
2.7%
Change from 2016
+1.2pp
8
2.7%
+1.2pp
85 and over
2021 count
0
% of total
0.0%
Change from 2016
-1.8pp
0
0.0%
-1.8pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-8
-1.7pp
5 to 9
+13
+5.1pp
10 to 14
-11
-2.9pp
15 to 19
+13
+4.6pp
20 to 24
+4
+2.3pp
25 to 29
0
+0.9pp
30 to 34
-3
-0.5pp
35 to 39
+4
+2.2pp
40 to 44
-26
-7.3pp
45 to 49
+7
+3.2pp
50 to 54
-10
-2.3pp
55 to 59
-24
-6.1pp
60 to 64
+2
+2.2pp
65 to 69
+9
+3.9pp
70 to 74
-24
-6.7pp
75 to 79
+11
+4.2pp
80 to 84
+3
+1.2pp
85 and over
-6
-1.8pp
Data table
Five year age groups for Dandaragan. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Dandaragan (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Dandaragan (S)% | Count | % | Dandaragan (S)% | Count | pp | |
| 0 to 4 | 14 | 4.8% | 4.8% | 22 | 6.5% | 5.9% | -8 | -1.7pp |
| 5 to 9 | 25 | 8.6% | 5.1% | 12 | 3.5% | 5.6% | +13 | +5.1pp |
| 10 to 14 | 8 | 2.7% | 4.1% | 19 | 5.6% | 4.1% | -11 | -2.9pp |
| 15 to 19 | 16 | 5.5% | 3.5% | 3 | 0.9% | 3.8% | +13 | +4.6pp |
| 20 to 24 | 24 | 8.2% | 3.1% | 20 | 5.9% | 3.4% | +4 | +2.3pp |
| 25 to 29 | 20 | 6.8% | 5.4% | 20 | 5.9% | 5.6% | 0 | +0.9pp |
| 30 to 34 | 7 | 2.4% | 5.3% | 10 | 2.9% | 5.7% | -3 | -0.5pp |
| 35 to 39 | 21 | 7.2% | 5.8% | 17 | 5.0% | 5.2% | +4 | +2.2pp |
| 40 to 44 | 6 | 2.1% | 5.2% | 32 | 9.4% | 6.3% | -26 | -7.3pp |
| 45 to 49 | 24 | 8.2% | 6.1% | 17 | 5.0% | 6.4% | +7 | +3.2pp |
| 50 to 54 | 14 | 4.8% | 6.1% | 24 | 7.1% | 7.9% | -10 | -2.3pp |
| 55 to 59 | 20 | 6.8% | 8.2% | 44 | 12.9% | 8.1% | -24 | -6.1pp |
| 60 to 64 | 32 | 11.0% | 9.5% | 30 | 8.8% | 9.0% | +2 | +2.2pp |
| 65 to 69 | 27 | 9.2% | 10.1% | 18 | 5.3% | 8.7% | +9 | +3.9pp |
| 70 to 74 | 8 | 2.7% | 7.8% | 32 | 9.4% | 6.0% | -24 | -6.7pp |
| 75 to 79 | 20 | 6.8% | 4.9% | 9 | 2.6% | 4.2% | +11 | +4.2pp |
| 80 to 84 | 8 | 2.7% | 3.1% | 5 | 1.5% | 2.6% | +3 | +1.2pp |
| 85 and over | 0 | 0.0% | 1.8% | 6 | 1.8% | 1.5% | -6 | -1.8pp |
| Total | 292 | 100.0% | 100.0% | 340 | 100.0% | 100.0% | -48 | 0.0pp |