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, 0 to 4 year olds was the largest age group among residents in Detention, accounting for 25.7% (9 people). This share was higher than Circular Head (M) (6.2%). Since 2016, the biggest change was in 0 to 4 year olds, which increased by 9 people, while its share fell by NaN percentage points.
Section overview
Age structure - Five year age groups
Detention - Total persons (Usual residence)
This table summarises five year age groups for Detention in 2021 for persons, with comparison against Circular Head (M) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Detention, with comparison markers for Circular Head (M).
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
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+9
NaNpp
5 to 9
0
NaNpp
10 to 14
0
NaNpp
15 to 19
0
NaNpp
20 to 24
0
NaNpp
25 to 29
+7
NaNpp
30 to 34
+3
NaNpp
35 to 39
0
NaNpp
40 to 44
0
NaNpp
45 to 49
0
NaNpp
50 to 54
0
NaNpp
55 to 59
0
NaNpp
60 to 64
0
NaNpp
65 to 69
0
NaNpp
70 to 74
0
NaNpp
75 to 79
0
NaNpp
80 to 84
0
NaNpp
85 and over
0
NaNpp
Data table
Five year age groups for Detention. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Circular Head (M).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Circular Head (M)% | Count | % | Circular Head (M)% | Count | pp | |
| 0 to 4 | 9 | 25.7% | 6.2% | 0 | NaN% | 6.2% | +9 | NaNpp |
| 5 to 9 | 0 | 0.0% | 6.1% | 0 | NaN% | 7.6% | 0 | NaNpp |
| 10 to 14 | 0 | 0.0% | 6.8% | 0 | NaN% | 6.7% | 0 | NaNpp |
| 15 to 19 | 0 | 0.0% | 5.9% | 0 | NaN% | 6.3% | 0 | NaNpp |
| 20 to 24 | 0 | 0.0% | 4.9% | 0 | NaN% | 6.3% | 0 | NaNpp |
| 25 to 29 | 7 | 20.0% | 6.7% | 0 | NaN% | 5.1% | +7 | NaNpp |
| 30 to 34 | 3 | 8.6% | 5.8% | 0 | NaN% | 5.9% | +3 | NaNpp |
| 35 to 39 | 0 | 0.0% | 6.1% | 0 | NaN% | 5.0% | 0 | NaNpp |
| 40 to 44 | 0 | 0.0% | 5.0% | 0 | NaN% | 5.9% | 0 | NaNpp |
| 45 to 49 | 0 | 0.0% | 5.6% | 0 | NaN% | 6.5% | 0 | NaNpp |
| 50 to 54 | 0 | 0.0% | 6.8% | 0 | NaN% | 7.3% | 0 | NaNpp |
| 55 to 59 | 0 | 0.0% | 6.9% | 0 | NaN% | 8.0% | 0 | NaNpp |
| 60 to 64 | 0 | 0.0% | 7.7% | 0 | NaN% | 6.8% | 0 | NaNpp |
| 65 to 69 | 0 | 0.0% | 6.7% | 0 | NaN% | 5.6% | 0 | NaNpp |
| 70 to 74 | 0 | 0.0% | 5.3% | 0 | NaN% | 4.5% | 0 | NaNpp |
| 75 to 79 | 0 | 0.0% | 3.6% | 0 | NaN% | 2.6% | 0 | NaNpp |
| 80 to 84 | 0 | 0.0% | 2.2% | 0 | NaN% | 2.3% | 0 | NaNpp |
| 85 and over | 0 | 0.0% | 2.1% | 0 | NaN% | 1.4% | 0 | NaNpp |
| Total | 35 | 100.0% | 100.0% | 0 | NaN% | 100.0% | +35 | NaNpp |