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, 65 to 69 year olds was the largest age group among residents in Dandaragan (S), accounting for 10.1% (340 people). This share was higher than Regional WA (5.7%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 69 people and 1.8 percentage points.
Section overview
Age structure - Five year age groups
Dandaragan (S) - Total persons (Usual residence)
This table summarises five year age groups for Dandaragan (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for Dandaragan (S), with comparison markers for Regional WA.
0 to 4
2021 count
162
% of total
4.8%
Change from 2016
-1.1pp
162
4.8%
-1.1pp
5 to 9
2021 count
170
% of total
5.1%
Change from 2016
-0.5pp
170
5.1%
-0.5pp
10 to 14
2021 count
137
% of total
4.1%
Change from 2016
0.0pp
137
4.1%
0.0pp
15 to 19
2021 count
118
% of total
3.5%
Change from 2016
-0.3pp
118
3.5%
-0.3pp
20 to 24
2021 count
104
% of total
3.1%
Change from 2016
-0.3pp
104
3.1%
-0.3pp
25 to 29
2021 count
182
% of total
5.4%
Change from 2016
-0.2pp
182
5.4%
-0.2pp
30 to 34
2021 count
177
% of total
5.3%
Change from 2016
-0.4pp
177
5.3%
-0.4pp
35 to 39
2021 count
193
% of total
5.8%
Change from 2016
+0.6pp
193
5.8%
+0.6pp
40 to 44
2021 count
174
% of total
5.2%
Change from 2016
-1.1pp
174
5.2%
-1.1pp
45 to 49
2021 count
206
% of total
6.1%
Change from 2016
-0.3pp
206
6.1%
-0.3pp
50 to 54
2021 count
206
% of total
6.1%
Change from 2016
-1.8pp
206
6.1%
-1.8pp
55 to 59
2021 count
275
% of total
8.2%
Change from 2016
+0.1pp
275
8.2%
+0.1pp
60 to 64
2021 count
320
% of total
9.5%
Change from 2016
+0.5pp
320
9.5%
+0.5pp
65 to 69
2021 count
340
% of total
10.1%
Change from 2016
+1.4pp
340
10.1%
+1.4pp
70 to 74
2021 count
261
% of total
7.8%
Change from 2016
+1.8pp
261
7.8%
+1.8pp
75 to 79
2021 count
166
% of total
4.9%
Change from 2016
+0.7pp
166
4.9%
+0.7pp
80 to 84
2021 count
103
% of total
3.1%
Change from 2016
+0.5pp
103
3.1%
+0.5pp
85 and over
2021 count
61
% of total
1.8%
Change from 2016
+0.3pp
61
1.8%
+0.3pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-26
-1.1pp
5 to 9
-9
-0.5pp
10 to 14
+6
0.0pp
15 to 19
-5
-0.3pp
20 to 24
-6
-0.3pp
25 to 29
+2
-0.2pp
30 to 34
-5
-0.4pp
35 to 39
+27
+0.6pp
40 to 44
-27
-1.1pp
45 to 49
0
-0.3pp
50 to 54
-48
-1.8pp
55 to 59
+15
+0.1pp
60 to 64
+32
+0.5pp
65 to 69
+59
+1.4pp
70 to 74
+69
+1.8pp
75 to 79
+32
+0.7pp
80 to 84
+21
+0.5pp
85 and over
+14
+0.3pp
Data table
Five year age groups for Dandaragan (S). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| 0 to 4 | 162 | 4.8% | 6.0% | 188 | 5.9% | 6.6% | -26 | -1.1pp |
| 5 to 9 | 170 | 5.1% | 6.7% | 179 | 5.6% | 7.1% | -9 | -0.5pp |
| 10 to 14 | 137 | 4.1% | 6.7% | 131 | 4.1% | 6.5% | +6 | 0.0pp |
| 15 to 19 | 118 | 3.5% | 5.5% | 123 | 3.8% | 5.7% | -5 | -0.3pp |
| 20 to 24 | 104 | 3.1% | 4.8% | 110 | 3.4% | 5.0% | -6 | -0.3pp |
| 25 to 29 | 182 | 5.4% | 5.9% | 180 | 5.6% | 6.5% | +2 | -0.2pp |
| 30 to 34 | 177 | 5.3% | 6.6% | 182 | 5.7% | 7.1% | -5 | -0.4pp |
| 35 to 39 | 193 | 5.8% | 6.8% | 166 | 5.2% | 6.7% | +27 | +0.6pp |
| 40 to 44 | 174 | 5.2% | 6.4% | 201 | 6.3% | 7.0% | -27 | -1.1pp |
| 45 to 49 | 206 | 6.1% | 6.6% | 206 | 6.4% | 7.2% | 0 | -0.3pp |
| 50 to 54 | 206 | 6.1% | 6.9% | 254 | 7.9% | 7.1% | -48 | -1.8pp |
| 55 to 59 | 275 | 8.2% | 6.8% | 260 | 8.1% | 6.9% | +15 | +0.1pp |
| 60 to 64 | 320 | 9.5% | 6.7% | 288 | 9.0% | 6.0% | +32 | +0.5pp |
| 65 to 69 | 340 | 10.1% | 5.7% | 281 | 8.7% | 5.3% | +59 | +1.4pp |
| 70 to 74 | 261 | 7.8% | 4.9% | 192 | 6.0% | 3.6% | +69 | +1.8pp |
| 75 to 79 | 166 | 4.9% | 3.2% | 134 | 4.2% | 2.6% | +32 | +0.7pp |
| 80 to 84 | 103 | 3.1% | 2.0% | 82 | 2.6% | 1.6% | +21 | +0.5pp |
| 85 and over | 61 | 1.8% | 1.7% | 47 | 1.5% | 1.5% | +14 | +0.3pp |
| Total | 3,355 | 100.0% | 100.0% | 3,213 | 100.0% | 100.0% | +142 | 0.0pp |