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, 50 to 54 year olds was the largest age group among residents in Southern Cross (WA), accounting for 12.8% (73 people). This share was higher than Yilgarn (S) (10.1%). Since 2016, the biggest change was in 15 to 19 year olds, which decreased by 34 people and 7.4 percentage points.
Section overview
Age structure - Five year age groups
Southern Cross (WA) - Total persons (Usual residence)
This table summarises five year age groups for Southern Cross (WA) in 2021 for persons, with comparison against Yilgarn (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Southern Cross (WA), with comparison markers for Yilgarn (S).
0 to 4
2021 count
30
% of total
5.2%
Change from 2016
+1.7pp
30
5.2%
+1.7pp
5 to 9
2021 count
41
% of total
7.2%
Change from 2016
-0.8pp
41
7.2%
-0.8pp
10 to 14
2021 count
30
% of total
5.2%
Change from 2016
-3.5pp
30
5.2%
-3.5pp
15 to 19
2021 count
10
% of total
1.7%
Change from 2016
-7.4pp
10
1.7%
-7.4pp
20 to 24
2021 count
26
% of total
4.5%
Change from 2016
-0.2pp
26
4.5%
-0.2pp
25 to 29
2021 count
32
% of total
5.6%
Change from 2016
+2.5pp
32
5.6%
+2.5pp
30 to 34
2021 count
42
% of total
7.3%
Change from 2016
+1.1pp
42
7.3%
+1.1pp
35 to 39
2021 count
33
% of total
5.8%
Change from 2016
+0.9pp
33
5.8%
+0.9pp
40 to 44
2021 count
35
% of total
6.1%
Change from 2016
-2.4pp
35
6.1%
-2.4pp
45 to 49
2021 count
28
% of total
4.9%
Change from 2016
-4.8pp
28
4.9%
-4.8pp
50 to 54
2021 count
73
% of total
12.8%
Change from 2016
+2.7pp
73
12.8%
+2.7pp
55 to 59
2021 count
65
% of total
11.4%
Change from 2016
+4.0pp
65
11.4%
+4.0pp
60 to 64
2021 count
41
% of total
7.2%
Change from 2016
+1.6pp
41
7.2%
+1.6pp
65 to 69
2021 count
28
% of total
4.9%
Change from 2016
+0.6pp
28
4.9%
+0.6pp
70 to 74
2021 count
40
% of total
7.0%
Change from 2016
+5.6pp
40
7.0%
+5.6pp
75 to 79
2021 count
18
% of total
3.1%
Change from 2016
+0.8pp
18
3.1%
+0.8pp
80 to 84
2021 count
15
% of total
2.6%
Change from 2016
+2.0pp
15
2.6%
+2.0pp
85 and over
2021 count
22
% of total
3.8%
Change from 2016
+3.8pp
22
3.8%
+3.8pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+13
+1.7pp
5 to 9
+2
-0.8pp
10 to 14
-12
-3.5pp
15 to 19
-34
-7.4pp
20 to 24
+3
-0.2pp
25 to 29
+17
+2.5pp
30 to 34
+12
+1.1pp
35 to 39
+9
+0.9pp
40 to 44
-6
-2.4pp
45 to 49
-19
-4.8pp
50 to 54
+24
+2.7pp
55 to 59
+29
+4.0pp
60 to 64
+14
+1.6pp
65 to 69
+7
+0.6pp
70 to 74
+33
+5.6pp
75 to 79
+7
+0.8pp
80 to 84
+12
+2.0pp
85 and over
+22
+3.8pp
Data table
Five year age groups for Southern Cross (WA). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Yilgarn (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Yilgarn (S)% | Count | % | Yilgarn (S)% | Count | pp | |
| 0 to 4 | 30 | 5.2% | 3.5% | 17 | 3.5% | 4.1% | +13 | +1.7pp |
| 5 to 9 | 41 | 7.2% | 3.3% | 39 | 8.0% | 5.0% | +2 | -0.8pp |
| 10 to 14 | 30 | 5.2% | 2.9% | 42 | 8.7% | 3.6% | -12 | -3.5pp |
| 15 to 19 | 10 | 1.7% | 1.8% | 44 | 9.1% | 2.0% | -34 | -7.4pp |
| 20 to 24 | 26 | 4.5% | 4.1% | 23 | 4.7% | 4.2% | +3 | -0.2pp |
| 25 to 29 | 32 | 5.6% | 7.8% | 15 | 3.1% | 8.2% | +17 | +2.5pp |
| 30 to 34 | 42 | 7.3% | 7.0% | 30 | 6.2% | 6.3% | +12 | +1.1pp |
| 35 to 39 | 33 | 5.8% | 7.8% | 24 | 4.9% | 5.4% | +9 | +0.9pp |
| 40 to 44 | 35 | 6.1% | 6.1% | 41 | 8.5% | 7.3% | -6 | -2.4pp |
| 45 to 49 | 28 | 4.9% | 8.5% | 47 | 9.7% | 9.1% | -19 | -4.8pp |
| 50 to 54 | 73 | 12.8% | 10.1% | 49 | 10.1% | 11.1% | +24 | +2.7pp |
| 55 to 59 | 65 | 11.4% | 10.1% | 36 | 7.4% | 9.4% | +29 | +4.0pp |
| 60 to 64 | 41 | 7.2% | 8.4% | 27 | 5.6% | 5.7% | +14 | +1.6pp |
| 65 to 69 | 28 | 4.9% | 4.8% | 21 | 4.3% | 7.2% | +7 | +0.6pp |
| 70 to 74 | 40 | 7.0% | 5.0% | 7 | 1.4% | 2.7% | +33 | +5.6pp |
| 75 to 79 | 18 | 3.1% | 1.4% | 11 | 2.3% | 3.7% | +7 | +0.8pp |
| 80 to 84 | 15 | 2.6% | 1.8% | 3 | 0.6% | 1.7% | +12 | +2.0pp |
| 85 and over | 22 | 3.8% | 2.1% | 0 | 0.0% | 1.7% | +22 | +3.8pp |
| Total | 572 | 100.0% | 100.0% | 485 | 100.0% | 100.0% | +87 | 0.0pp |