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 Truganina (part), accounting for 14.4% (5,230 people). This share was higher than Wyndham (C) (11.3%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 5,230 people and 14.4 percentage points.
Section overview
Age structure - Five year age groups
Truganina (part) - Total persons (Usual residence)
This table summarises five year age groups for Truganina (part) in 2021 for persons, with comparison against Wyndham (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Truganina (part), with comparison markers for Wyndham (C).
0 to 4
2021 count
4,238
% of total
11.7%
Change from 2016
+11.7pp
4,238
11.7%
+11.7pp
5 to 9
2021 count
3,856
% of total
10.6%
Change from 2016
+10.6pp
3,856
10.6%
+10.6pp
10 to 14
2021 count
2,484
% of total
6.8%
Change from 2016
+6.8pp
2,484
6.8%
+6.8pp
15 to 19
2021 count
1,544
% of total
4.3%
Change from 2016
+4.3pp
1,544
4.3%
+4.3pp
20 to 24
2021 count
2,278
% of total
6.3%
Change from 2016
+6.3pp
2,278
6.3%
+6.3pp
25 to 29
2021 count
3,409
% of total
9.4%
Change from 2016
+9.4pp
3,409
9.4%
+9.4pp
30 to 34
2021 count
4,650
% of total
12.8%
Change from 2016
+12.8pp
4,650
12.8%
+12.8pp
35 to 39
2021 count
5,230
% of total
14.4%
Change from 2016
+14.4pp
5,230
14.4%
+14.4pp
40 to 44
2021 count
3,108
% of total
8.6%
Change from 2016
+8.6pp
3,108
8.6%
+8.6pp
45 to 49
2021 count
1,661
% of total
4.6%
Change from 2016
+4.6pp
1,661
4.6%
+4.6pp
50 to 54
2021 count
1,102
% of total
3.0%
Change from 2016
+3.0pp
1,102
3.0%
+3.0pp
55 to 59
2021 count
815
% of total
2.2%
Change from 2016
+2.2pp
815
2.2%
+2.2pp
60 to 64
2021 count
689
% of total
1.9%
Change from 2016
+1.9pp
689
1.9%
+1.9pp
65 to 69
2021 count
531
% of total
1.5%
Change from 2016
+1.5pp
531
1.5%
+1.5pp
70 to 74
2021 count
353
% of total
1.0%
Change from 2016
+1.0pp
353
1.0%
+1.0pp
75 to 79
2021 count
221
% of total
0.6%
Change from 2016
+0.6pp
221
0.6%
+0.6pp
80 to 84
2021 count
91
% of total
0.3%
Change from 2016
+0.3pp
91
0.3%
+0.3pp
85 and over
2021 count
46
% of total
0.1%
Change from 2016
+0.1pp
46
0.1%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+4,238
+11.7pp
5 to 9
+3,856
+10.6pp
10 to 14
+2,484
+6.8pp
15 to 19
+1,544
+4.3pp
20 to 24
+2,278
+6.3pp
25 to 29
+3,409
+9.4pp
30 to 34
+4,650
+12.8pp
35 to 39
+5,230
+14.4pp
40 to 44
+3,108
+8.6pp
45 to 49
+1,661
+4.6pp
50 to 54
+1,102
+3.0pp
55 to 59
+815
+2.2pp
60 to 64
+689
+1.9pp
65 to 69
+531
+1.5pp
70 to 74
+353
+1.0pp
75 to 79
+221
+0.6pp
80 to 84
+91
+0.3pp
85 and over
+46
+0.1pp
Data table
Five year age groups for Truganina (part). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Wyndham (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Wyndham (C)% | Count | % | Wyndham (C)% | Count | pp | |
| 0 to 4 | 4,238 | 11.7% | 8.9% | 0 | 0.0% | 9.9% | +4,238 | +11.7pp |
| 5 to 9 | 3,856 | 10.6% | 9.2% | 0 | 0.0% | 8.5% | +3,856 | +10.6pp |
| 10 to 14 | 2,484 | 6.8% | 7.3% | 0 | 0.0% | 6.5% | +2,484 | +6.8pp |
| 15 to 19 | 1,544 | 4.3% | 5.5% | 0 | 0.0% | 5.9% | +1,544 | +4.3pp |
| 20 to 24 | 2,278 | 6.3% | 6.2% | 0 | 0.0% | 6.2% | +2,278 | +6.3pp |
| 25 to 29 | 3,409 | 9.4% | 7.6% | 0 | 0.0% | 8.0% | +3,409 | +9.4pp |
| 30 to 34 | 4,650 | 12.8% | 9.8% | 0 | 0.0% | 10.8% | +4,650 | +12.8pp |
| 35 to 39 | 5,230 | 14.4% | 11.3% | 0 | 0.0% | 9.4% | +5,230 | +14.4pp |
| 40 to 44 | 3,108 | 8.6% | 8.2% | 0 | 0.0% | 7.4% | +3,108 | +8.6pp |
| 45 to 49 | 1,661 | 4.6% | 5.9% | 0 | 0.0% | 6.3% | +1,661 | +4.6pp |
| 50 to 54 | 1,102 | 3.0% | 4.8% | 0 | 0.0% | 5.4% | +1,102 | +3.0pp |
| 55 to 59 | 815 | 2.2% | 4.1% | 0 | 0.0% | 4.5% | +815 | +2.2pp |
| 60 to 64 | 689 | 1.9% | 3.5% | 0 | 0.0% | 3.7% | +689 | +1.9pp |
| 65 to 69 | 531 | 1.5% | 2.8% | 0 | 0.0% | 3.0% | +531 | +1.5pp |
| 70 to 74 | 353 | 1.0% | 2.2% | 0 | 0.0% | 1.9% | +353 | +1.0pp |
| 75 to 79 | 221 | 0.6% | 1.3% | 0 | 0.0% | 1.2% | +221 | +0.6pp |
| 80 to 84 | 91 | 0.3% | 0.8% | 0 | 0.0% | 0.8% | +91 | +0.3pp |
| 85 and over | 46 | 0.1% | 0.6% | 0 | 0.0% | 0.7% | +46 | +0.1pp |
| Total | 36,305 | 100.0% | 100.0% | 3 | 100.0% | 100.0% | +36,302 | 0.0pp |