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, 30 to 34 year olds was the largest age group among residents in Jacana, accounting for 11.4% (250 people). This share was higher than Hume (C) (8.7%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 75 people and 3.2 percentage points.
Section overview
Age structure - Five year age groups
Jacana - Total persons (Usual residence)
This table summarises five year age groups for Jacana in 2021 for persons, with comparison against Hume (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Jacana, with comparison markers for Hume (C).
0 to 4
2021 count
129
% of total
5.9%
Change from 2016
-0.6pp
129
5.9%
-0.6pp
5 to 9
2021 count
108
% of total
4.9%
Change from 2016
-0.3pp
108
4.9%
-0.3pp
10 to 14
2021 count
89
% of total
4.1%
Change from 2016
+0.4pp
89
4.1%
+0.4pp
15 to 19
2021 count
80
% of total
3.7%
Change from 2016
-0.9pp
80
3.7%
-0.9pp
20 to 24
2021 count
164
% of total
7.5%
Change from 2016
0.0pp
164
7.5%
0.0pp
25 to 29
2021 count
224
% of total
10.2%
Change from 2016
-0.8pp
224
10.2%
-0.8pp
30 to 34
2021 count
250
% of total
11.4%
Change from 2016
+3.2pp
250
11.4%
+3.2pp
35 to 39
2021 count
187
% of total
8.6%
Change from 2016
+2.1pp
187
8.6%
+2.1pp
40 to 44
2021 count
129
% of total
5.9%
Change from 2016
+0.2pp
129
5.9%
+0.2pp
45 to 49
2021 count
95
% of total
4.3%
Change from 2016
-1.6pp
95
4.3%
-1.6pp
50 to 54
2021 count
105
% of total
4.8%
Change from 2016
-2.2pp
105
4.8%
-2.2pp
55 to 59
2021 count
132
% of total
6.0%
Change from 2016
+0.6pp
132
6.0%
+0.6pp
60 to 64
2021 count
116
% of total
5.3%
Change from 2016
-0.7pp
116
5.3%
-0.7pp
65 to 69
2021 count
115
% of total
5.3%
Change from 2016
+2.2pp
115
5.3%
+2.2pp
70 to 74
2021 count
56
% of total
2.6%
Change from 2016
-0.9pp
56
2.6%
-0.9pp
75 to 79
2021 count
60
% of total
2.7%
Change from 2016
-1.0pp
60
2.7%
-1.0pp
80 to 84
2021 count
59
% of total
2.7%
Change from 2016
+0.2pp
59
2.7%
+0.2pp
85 and over
2021 count
53
% of total
2.4%
Change from 2016
+0.1pp
53
2.4%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-9
-0.6pp
5 to 9
-2
-0.3pp
10 to 14
+11
+0.4pp
15 to 19
-17
-0.9pp
20 to 24
+5
0.0pp
25 to 29
-11
-0.8pp
30 to 34
+75
+3.2pp
35 to 39
+48
+2.1pp
40 to 44
+7
+0.2pp
45 to 49
-31
-1.6pp
50 to 54
-43
-2.2pp
55 to 59
+18
+0.6pp
60 to 64
-12
-0.7pp
65 to 69
+50
+2.2pp
70 to 74
-18
-0.9pp
75 to 79
-19
-1.0pp
80 to 84
+6
+0.2pp
85 and over
+4
+0.1pp
Data table
Five year age groups for Jacana. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Hume (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Hume (C)% | Count | % | Hume (C)% | Count | pp | |
| 0 to 4 | 129 | 5.9% | 7.7% | 138 | 6.5% | 7.9% | -9 | -0.6pp |
| 5 to 9 | 108 | 4.9% | 7.8% | 110 | 5.2% | 7.5% | -2 | -0.3pp |
| 10 to 14 | 89 | 4.1% | 7.0% | 78 | 3.7% | 6.9% | +11 | +0.4pp |
| 15 to 19 | 80 | 3.7% | 6.2% | 97 | 4.6% | 7.1% | -17 | -0.9pp |
| 20 to 24 | 164 | 7.5% | 6.8% | 159 | 7.5% | 7.4% | +5 | 0.0pp |
| 25 to 29 | 224 | 10.2% | 7.7% | 235 | 11.0% | 7.9% | -11 | -0.8pp |
| 30 to 34 | 250 | 11.4% | 8.7% | 175 | 8.2% | 7.9% | +75 | +3.2pp |
| 35 to 39 | 187 | 8.6% | 8.4% | 139 | 6.5% | 7.2% | +48 | +2.1pp |
| 40 to 44 | 129 | 5.9% | 6.8% | 122 | 5.7% | 6.7% | +7 | +0.2pp |
| 45 to 49 | 95 | 4.3% | 5.9% | 126 | 5.9% | 6.9% | -31 | -1.6pp |
| 50 to 54 | 105 | 4.8% | 5.9% | 148 | 7.0% | 6.5% | -43 | -2.2pp |
| 55 to 59 | 132 | 6.0% | 5.5% | 114 | 5.4% | 5.5% | +18 | +0.6pp |
| 60 to 64 | 116 | 5.3% | 4.6% | 128 | 6.0% | 4.5% | -12 | -0.7pp |
| 65 to 69 | 115 | 5.3% | 3.7% | 65 | 3.1% | 3.7% | +50 | +2.2pp |
| 70 to 74 | 56 | 2.6% | 3.0% | 74 | 3.5% | 2.6% | -18 | -0.9pp |
| 75 to 79 | 60 | 2.7% | 2.0% | 79 | 3.7% | 1.8% | -19 | -1.0pp |
| 80 to 84 | 59 | 2.7% | 1.2% | 53 | 2.5% | 1.2% | +6 | +0.2pp |
| 85 and over | 53 | 2.4% | 1.0% | 49 | 2.3% | 1.0% | +4 | +0.1pp |
| Total | 2,187 | 100.0% | 100.0% | 2,128 | 100.0% | 100.0% | +59 | 0.0pp |