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
Detailed insight for Five year age groups in Rockdale (C) is not yet available for the current filters.
Section overview
Age structure - Five year age groups
Rockdale (C) - Total persons (Usual residence)
This table summarises five year age groups for Rockdale (C) in 2021 for persons, with comparison against Greater Sydney and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for Rockdale (C), with comparison markers for Greater Sydney.
0 to 4
5 to 9
10 to 14
15 to 19
20 to 24
25 to 29
30 to 34
35 to 39
40 to 44
45 to 49
50 to 54
55 to 59
60 to 64
65 to 69
70 to 74
75 to 79
80 to 84
85 and over
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
Data table
Five year age groups for Rockdale (C). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Greater Sydney.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Greater Sydney% | Count | % | Greater Sydney% | Count | pp | |
| 0 to 4 | - | - | 6.0% | 6,646 | 6.1% | 6.4% | - | - |
| 5 to 9 | - | - | 6.3% | 5,747 | 5.3% | 6.4% | - | - |
| 10 to 14 | - | - | 6.2% | 5,020 | 4.6% | 5.8% | - | - |
| 15 to 19 | - | - | 5.6% | 5,470 | 5.0% | 6.0% | - | - |
| 20 to 24 | - | - | 6.6% | 8,084 | 7.4% | 7.1% | - | - |
| 25 to 29 | - | - | 7.5% | 11,122 | 10.2% | 7.9% | - | - |
| 30 to 34 | - | - | 8.0% | 10,779 | 9.9% | 8.1% | - | - |
| 35 to 39 | - | - | 7.9% | 8,370 | 7.7% | 7.4% | - | - |
| 40 to 44 | - | - | 7.0% | 7,382 | 6.7% | 7.1% | - | - |
| 45 to 49 | - | - | 6.6% | 6,744 | 6.2% | 6.7% | - | - |
| 50 to 54 | - | - | 6.2% | 6,367 | 5.8% | 6.3% | - | - |
| 55 to 59 | - | - | 5.8% | 5,738 | 5.2% | 5.8% | - | - |
| 60 to 64 | - | - | 5.3% | 5,168 | 4.7% | 5.0% | - | - |
| 65 to 69 | - | - | 4.5% | 4,722 | 4.3% | 4.4% | - | - |
| 70 to 74 | - | - | 3.9% | 3,654 | 3.3% | 3.3% | - | - |
| 75 to 79 | - | - | 2.8% | 3,075 | 2.8% | 2.4% | - | - |
| 80 to 84 | - | - | 2.0% | 2,472 | 2.3% | 1.8% | - | - |
| 85 and over | - | - | 2.0% | 2,817 | 2.6% | 2.0% | - | - |
| Total | - | - | 100.0% | 109,404 | 100.0% | 100.0% | - | - |