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, 5 to 9 year olds was the largest age group among residents in Madora Bay, accounting for 7.8% (297 people). This share was higher than Mandurah (C) (5.8%). Since 2016, the biggest change was in 20 to 24 year olds, which increased by 101 people and 1.1 percentage points.
Section overview
Age structure - Five year age groups
Madora Bay - Total persons (Usual residence)
This table summarises five year age groups for Madora Bay in 2021 for persons, with comparison against Mandurah (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Madora Bay, with comparison markers for Mandurah (C).
0 to 4
2021 count
268
% of total
7.0%
Change from 2016
0.0pp
268
7.0%
0.0pp
5 to 9
2021 count
297
% of total
7.8%
Change from 2016
+0.4pp
297
7.8%
+0.4pp
10 to 14
2021 count
295
% of total
7.7%
Change from 2016
-0.3pp
295
7.7%
-0.3pp
15 to 19
2021 count
240
% of total
6.3%
Change from 2016
-2.2pp
240
6.3%
-2.2pp
20 to 24
2021 count
255
% of total
6.7%
Change from 2016
+1.1pp
255
6.7%
+1.1pp
25 to 29
2021 count
198
% of total
5.2%
Change from 2016
0.0pp
198
5.2%
0.0pp
30 to 34
2021 count
252
% of total
6.6%
Change from 2016
+0.2pp
252
6.6%
+0.2pp
35 to 39
2021 count
274
% of total
7.2%
Change from 2016
+0.3pp
274
7.2%
+0.3pp
40 to 44
2021 count
270
% of total
7.0%
Change from 2016
-1.7pp
270
7.0%
-1.7pp
45 to 49
2021 count
281
% of total
7.3%
Change from 2016
-1.1pp
281
7.3%
-1.1pp
50 to 54
2021 count
284
% of total
7.4%
Change from 2016
+0.4pp
284
7.4%
+0.4pp
55 to 59
2021 count
261
% of total
6.8%
Change from 2016
-0.1pp
261
6.8%
-0.1pp
60 to 64
2021 count
231
% of total
6.0%
Change from 2016
+1.0pp
231
6.0%
+1.0pp
65 to 69
2021 count
184
% of total
4.8%
Change from 2016
+1.2pp
184
4.8%
+1.2pp
70 to 74
2021 count
131
% of total
3.4%
Change from 2016
+1.0pp
131
3.4%
+1.0pp
75 to 79
2021 count
60
% of total
1.6%
Change from 2016
+0.4pp
60
1.6%
+0.4pp
80 to 84
2021 count
38
% of total
1.0%
Change from 2016
0.0pp
38
1.0%
0.0pp
85 and over
2021 count
25
% of total
0.7%
Change from 2016
0.0pp
25
0.7%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+77
0.0pp
5 to 9
+96
+0.4pp
10 to 14
+77
-0.3pp
15 to 19
+9
-2.2pp
20 to 24
+101
+1.1pp
25 to 29
+56
0.0pp
30 to 34
+78
+0.2pp
35 to 39
+85
+0.3pp
40 to 44
+33
-1.7pp
45 to 49
+53
-1.1pp
50 to 54
+92
+0.4pp
55 to 59
+73
-0.1pp
60 to 64
+94
+1.0pp
65 to 69
+86
+1.2pp
70 to 74
+66
+1.0pp
75 to 79
+26
+0.4pp
80 to 84
+12
0.0pp
85 and over
+5
0.0pp
Data table
Five year age groups for Madora Bay. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Mandurah (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mandurah (C)% | Count | % | Mandurah (C)% | Count | pp | |
| 0 to 4 | 268 | 7.0% | 5.3% | 191 | 7.0% | 5.8% | +77 | 0.0pp |
| 5 to 9 | 297 | 7.8% | 5.8% | 201 | 7.4% | 6.3% | +96 | +0.4pp |
| 10 to 14 | 295 | 7.7% | 6.3% | 218 | 8.0% | 5.9% | +77 | -0.3pp |
| 15 to 19 | 240 | 6.3% | 5.5% | 231 | 8.5% | 6.0% | +9 | -2.2pp |
| 20 to 24 | 255 | 6.7% | 5.0% | 154 | 5.6% | 5.4% | +101 | +1.1pp |
| 25 to 29 | 198 | 5.2% | 4.8% | 142 | 5.2% | 5.2% | +56 | 0.0pp |
| 30 to 34 | 252 | 6.6% | 5.4% | 174 | 6.4% | 5.7% | +78 | +0.2pp |
| 35 to 39 | 274 | 7.2% | 5.8% | 189 | 6.9% | 5.4% | +85 | +0.3pp |
| 40 to 44 | 270 | 7.0% | 5.3% | 237 | 8.7% | 6.1% | +33 | -1.7pp |
| 45 to 49 | 281 | 7.3% | 5.9% | 228 | 8.4% | 6.4% | +53 | -1.1pp |
| 50 to 54 | 284 | 7.4% | 6.2% | 192 | 7.0% | 6.5% | +92 | +0.4pp |
| 55 to 59 | 261 | 6.8% | 6.6% | 188 | 6.9% | 6.3% | +73 | -0.1pp |
| 60 to 64 | 231 | 6.0% | 6.7% | 137 | 5.0% | 6.4% | +94 | +1.0pp |
| 65 to 69 | 184 | 4.8% | 6.9% | 98 | 3.6% | 6.8% | +86 | +1.2pp |
| 70 to 74 | 131 | 3.4% | 6.9% | 65 | 2.4% | 5.7% | +66 | +1.0pp |
| 75 to 79 | 60 | 1.6% | 5.1% | 34 | 1.2% | 4.6% | +26 | +0.4pp |
| 80 to 84 | 38 | 1.0% | 3.6% | 26 | 1.0% | 3.0% | +12 | 0.0pp |
| 85 and over | 25 | 0.7% | 3.0% | 20 | 0.7% | 2.6% | +5 | 0.0pp |
| Total | 3,830 | 100.0% | 100.0% | 2,728 | 100.0% | 100.0% | +1,102 | 0.0pp |