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, 35 to 39 year olds was the largest age group among residents in Landsdale, accounting for 9.8% (1,514 people). This share was higher than Wanneroo (C) (7.9%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 504 people and 1.5 percentage points.
Section overview
Age structure - Five year age groups
Landsdale - Total persons (Usual residence)
This table summarises five year age groups for Landsdale in 2021 for persons, with comparison against Wanneroo (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Landsdale, with comparison markers for Wanneroo (C).
0 to 4
2021 count
1,321
% of total
8.6%
Change from 2016
0.0pp
1,321
8.6%
0.0pp
5 to 9
2021 count
1,373
% of total
8.9%
Change from 2016
+1.3pp
1,373
8.9%
+1.3pp
10 to 14
2021 count
1,163
% of total
7.6%
Change from 2016
+0.1pp
1,163
7.6%
+0.1pp
15 to 19
2021 count
1,013
% of total
6.6%
Change from 2016
-1.2pp
1,013
6.6%
-1.2pp
20 to 24
2021 count
978
% of total
6.4%
Change from 2016
-0.5pp
978
6.4%
-0.5pp
25 to 29
2021 count
930
% of total
6.0%
Change from 2016
-2.1pp
930
6.0%
-2.1pp
30 to 34
2021 count
1,332
% of total
8.6%
Change from 2016
-1.1pp
1,332
8.6%
-1.1pp
35 to 39
2021 count
1,514
% of total
9.8%
Change from 2016
+1.5pp
1,514
9.8%
+1.5pp
40 to 44
2021 count
1,209
% of total
7.9%
Change from 2016
+0.1pp
1,209
7.9%
+0.1pp
45 to 49
2021 count
1,010
% of total
6.6%
Change from 2016
-0.9pp
1,010
6.6%
-0.9pp
50 to 54
2021 count
1,003
% of total
6.5%
Change from 2016
-0.3pp
1,003
6.5%
-0.3pp
55 to 59
2021 count
862
% of total
5.6%
Change from 2016
+0.8pp
862
5.6%
+0.8pp
60 to 64
2021 count
610
% of total
4.0%
Change from 2016
+0.8pp
610
4.0%
+0.8pp
65 to 69
2021 count
420
% of total
2.7%
Change from 2016
+0.5pp
420
2.7%
+0.5pp
70 to 74
2021 count
295
% of total
1.9%
Change from 2016
+0.6pp
295
1.9%
+0.6pp
75 to 79
2021 count
142
% of total
0.9%
Change from 2016
-0.2pp
142
0.9%
-0.2pp
80 to 84
2021 count
125
% of total
0.8%
Change from 2016
+0.2pp
125
0.8%
+0.2pp
85 and over
2021 count
83
% of total
0.5%
Change from 2016
+0.3pp
83
0.5%
+0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+271
0.0pp
5 to 9
+442
+1.3pp
10 to 14
+252
+0.1pp
15 to 19
+62
-1.2pp
20 to 24
+139
-0.5pp
25 to 29
-53
-2.1pp
30 to 34
+154
-1.1pp
35 to 39
+504
+1.5pp
40 to 44
+259
+0.1pp
45 to 49
+98
-0.9pp
50 to 54
+169
-0.3pp
55 to 59
+278
+0.8pp
60 to 64
+218
+0.8pp
65 to 69
+146
+0.5pp
70 to 74
+137
+0.6pp
75 to 79
+10
-0.2pp
80 to 84
+51
+0.2pp
85 and over
+62
+0.3pp
Data table
Five year age groups for Landsdale. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Wanneroo (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Wanneroo (C)% | Count | % | Wanneroo (C)% | Count | pp | |
| 0 to 4 | 1,321 | 8.6% | 7.1% | 1,050 | 8.6% | 8.0% | +271 | 0.0pp |
| 5 to 9 | 1,373 | 8.9% | 7.6% | 931 | 7.6% | 7.9% | +442 | +1.3pp |
| 10 to 14 | 1,163 | 7.6% | 7.4% | 911 | 7.5% | 7.1% | +252 | +0.1pp |
| 15 to 19 | 1,013 | 6.6% | 6.6% | 951 | 7.8% | 7.1% | +62 | -1.2pp |
| 20 to 24 | 978 | 6.4% | 6.4% | 839 | 6.9% | 6.8% | +139 | -0.5pp |
| 25 to 29 | 930 | 6.0% | 6.5% | 983 | 8.1% | 7.5% | -53 | -2.1pp |
| 30 to 34 | 1,332 | 8.6% | 7.4% | 1,178 | 9.7% | 8.1% | +154 | -1.1pp |
| 35 to 39 | 1,514 | 9.8% | 7.9% | 1,010 | 8.3% | 7.5% | +504 | +1.5pp |
| 40 to 44 | 1,209 | 7.9% | 6.9% | 950 | 7.8% | 7.6% | +259 | +0.1pp |
| 45 to 49 | 1,010 | 6.6% | 7.0% | 912 | 7.5% | 7.4% | +98 | -0.9pp |
| 50 to 54 | 1,003 | 6.5% | 6.7% | 834 | 6.8% | 6.2% | +169 | -0.3pp |
| 55 to 59 | 862 | 5.6% | 5.7% | 584 | 4.8% | 5.0% | +278 | +0.8pp |
| 60 to 64 | 610 | 4.0% | 4.7% | 392 | 3.2% | 3.9% | +218 | +0.8pp |
| 65 to 69 | 420 | 2.7% | 3.8% | 274 | 2.2% | 3.5% | +146 | +0.5pp |
| 70 to 74 | 295 | 1.9% | 3.3% | 158 | 1.3% | 2.4% | +137 | +0.6pp |
| 75 to 79 | 142 | 0.9% | 2.2% | 132 | 1.1% | 1.8% | +10 | -0.2pp |
| 80 to 84 | 125 | 0.8% | 1.5% | 74 | 0.6% | 1.2% | +51 | +0.2pp |
| 85 and over | 83 | 0.5% | 1.3% | 21 | 0.2% | 1.0% | +62 | +0.3pp |
| Total | 15,401 | 100.0% | 100.0% | 12,206 | 100.0% | 100.0% | +3,195 | 0.0pp |