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, 55 to 59 year olds was the largest age group among residents in Halls Head, accounting for 7.6% (1,102 people). This share was higher than Mandurah (C) (6.6%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 255 people and 1.5 percentage points.
Section overview
Age structure - Five year age groups
Halls Head - Total persons (Usual residence)
This table summarises five year age groups for Halls Head 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 Halls Head, with comparison markers for Mandurah (C).
0 to 4
2021 count
760
% of total
5.3%
Change from 2016
-0.5pp
760
5.3%
-0.5pp
5 to 9
2021 count
866
% of total
6.0%
Change from 2016
-0.7pp
866
6.0%
-0.7pp
10 to 14
2021 count
981
% of total
6.8%
Change from 2016
-0.4pp
981
6.8%
-0.4pp
15 to 19
2021 count
922
% of total
6.4%
Change from 2016
-0.8pp
922
6.4%
-0.8pp
20 to 24
2021 count
699
% of total
4.8%
Change from 2016
-0.5pp
699
4.8%
-0.5pp
25 to 29
2021 count
628
% of total
4.3%
Change from 2016
-0.2pp
628
4.3%
-0.2pp
30 to 34
2021 count
663
% of total
4.6%
Change from 2016
-0.5pp
663
4.6%
-0.5pp
35 to 39
2021 count
817
% of total
5.6%
Change from 2016
-0.3pp
817
5.6%
-0.3pp
40 to 44
2021 count
813
% of total
5.6%
Change from 2016
-1.2pp
813
5.6%
-1.2pp
45 to 49
2021 count
968
% of total
6.7%
Change from 2016
-0.5pp
968
6.7%
-0.5pp
50 to 54
2021 count
1,013
% of total
7.0%
Change from 2016
-0.1pp
1,013
7.0%
-0.1pp
55 to 59
2021 count
1,102
% of total
7.6%
Change from 2016
+0.9pp
1,102
7.6%
+0.9pp
60 to 64
2021 count
1,012
% of total
7.0%
Change from 2016
+0.8pp
1,012
7.0%
+0.8pp
65 to 69
2021 count
979
% of total
6.8%
Change from 2016
+0.5pp
979
6.8%
+0.5pp
70 to 74
2021 count
916
% of total
6.3%
Change from 2016
+1.5pp
916
6.3%
+1.5pp
75 to 79
2021 count
658
% of total
4.5%
Change from 2016
+1.2pp
658
4.5%
+1.2pp
80 to 84
2021 count
393
% of total
2.7%
Change from 2016
+0.6pp
393
2.7%
+0.6pp
85 and over
2021 count
320
% of total
2.2%
Change from 2016
+0.3pp
320
2.2%
+0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-40
-0.5pp
5 to 9
-62
-0.7pp
10 to 14
-16
-0.4pp
15 to 19
-81
-0.8pp
20 to 24
-41
-0.5pp
25 to 29
0
-0.2pp
30 to 34
-43
-0.5pp
35 to 39
-7
-0.3pp
40 to 44
-132
-1.2pp
45 to 49
-25
-0.5pp
50 to 54
+35
-0.1pp
55 to 59
+167
+0.9pp
60 to 64
+149
+0.8pp
65 to 69
+111
+0.5pp
70 to 74
+255
+1.5pp
75 to 79
+204
+1.2pp
80 to 84
+98
+0.6pp
85 and over
+53
+0.3pp
Data table
Five year age groups for Halls Head. 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 | 760 | 5.3% | 5.3% | 800 | 5.8% | 5.8% | -40 | -0.5pp |
| 5 to 9 | 866 | 6.0% | 5.8% | 928 | 6.7% | 6.3% | -62 | -0.7pp |
| 10 to 14 | 981 | 6.8% | 6.3% | 997 | 7.2% | 5.9% | -16 | -0.4pp |
| 15 to 19 | 922 | 6.4% | 5.5% | 1,003 | 7.2% | 6.0% | -81 | -0.8pp |
| 20 to 24 | 699 | 4.8% | 5.0% | 740 | 5.3% | 5.4% | -41 | -0.5pp |
| 25 to 29 | 628 | 4.3% | 4.8% | 628 | 4.5% | 5.2% | 0 | -0.2pp |
| 30 to 34 | 663 | 4.6% | 5.4% | 706 | 5.1% | 5.7% | -43 | -0.5pp |
| 35 to 39 | 817 | 5.6% | 5.8% | 824 | 5.9% | 5.4% | -7 | -0.3pp |
| 40 to 44 | 813 | 5.6% | 5.3% | 945 | 6.8% | 6.1% | -132 | -1.2pp |
| 45 to 49 | 968 | 6.7% | 5.9% | 993 | 7.2% | 6.4% | -25 | -0.5pp |
| 50 to 54 | 1,013 | 7.0% | 6.2% | 978 | 7.1% | 6.5% | +35 | -0.1pp |
| 55 to 59 | 1,102 | 7.6% | 6.6% | 935 | 6.7% | 6.3% | +167 | +0.9pp |
| 60 to 64 | 1,012 | 7.0% | 6.7% | 863 | 6.2% | 6.4% | +149 | +0.8pp |
| 65 to 69 | 979 | 6.8% | 6.9% | 868 | 6.3% | 6.8% | +111 | +0.5pp |
| 70 to 74 | 916 | 6.3% | 6.9% | 661 | 4.8% | 5.7% | +255 | +1.5pp |
| 75 to 79 | 658 | 4.5% | 5.1% | 454 | 3.3% | 4.6% | +204 | +1.2pp |
| 80 to 84 | 393 | 2.7% | 3.6% | 295 | 2.1% | 3.0% | +98 | +0.6pp |
| 85 and over | 320 | 2.2% | 3.0% | 267 | 1.9% | 2.6% | +53 | +0.3pp |
| Total | 14,474 | 100.0% | 100.0% | 13,870 | 100.0% | 100.0% | +604 | 0.0pp |