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, 55 to 59 year olds was the largest age group among residents in Marino, accounting for 8.6% (195 people). This share was higher than Marion (C) (5.9%). Since 2016, the biggest change was in 55 to 59 year olds, which increased by 192 people and 5.6 percentage points.
Section overview
Age structure - Five year age groups
Marino - Total persons (Usual residence)
This table summarises five year age groups for Marino in 2021 for persons, with comparison against Marion (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Marino, with comparison markers for Marion (C).
0 to 4
2021 count
98
% of total
4.3%
Change from 2016
+1.3pp
98
4.3%
+1.3pp
5 to 9
2021 count
122
% of total
5.4%
Change from 2016
-0.5pp
122
5.4%
-0.5pp
10 to 14
2021 count
137
% of total
6.0%
Change from 2016
+3.0pp
137
6.0%
+3.0pp
15 to 19
2021 count
124
% of total
5.4%
Change from 2016
+2.4pp
124
5.4%
+2.4pp
20 to 24
2021 count
120
% of total
5.3%
Change from 2016
+2.3pp
120
5.3%
+2.3pp
25 to 29
2021 count
67
% of total
2.9%
Change from 2016
-15.9pp
67
2.9%
-15.9pp
30 to 34
2021 count
87
% of total
3.8%
Change from 2016
-3.1pp
87
3.8%
-3.1pp
35 to 39
2021 count
125
% of total
5.5%
Change from 2016
+5.5pp
125
5.5%
+5.5pp
40 to 44
2021 count
156
% of total
6.9%
Change from 2016
+3.9pp
156
6.9%
+3.9pp
45 to 49
2021 count
152
% of total
6.7%
Change from 2016
+0.8pp
152
6.7%
+0.8pp
50 to 54
2021 count
156
% of total
6.9%
Change from 2016
-3.0pp
156
6.9%
-3.0pp
55 to 59
2021 count
195
% of total
8.6%
Change from 2016
+5.6pp
195
8.6%
+5.6pp
60 to 64
2021 count
186
% of total
8.2%
Change from 2016
-0.7pp
186
8.2%
-0.7pp
65 to 69
2021 count
149
% of total
6.5%
Change from 2016
+3.5pp
149
6.5%
+3.5pp
70 to 74
2021 count
164
% of total
7.2%
Change from 2016
+4.2pp
164
7.2%
+4.2pp
75 to 79
2021 count
104
% of total
4.6%
Change from 2016
+1.6pp
104
4.6%
+1.6pp
80 to 84
2021 count
57
% of total
2.5%
Change from 2016
+2.5pp
57
2.5%
+2.5pp
85 and over
2021 count
46
% of total
2.0%
Change from 2016
+2.0pp
46
2.0%
+2.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+95
+1.3pp
5 to 9
+116
-0.5pp
10 to 14
+134
+3.0pp
15 to 19
+121
+2.4pp
20 to 24
+117
+2.3pp
25 to 29
+48
-15.9pp
30 to 34
+80
-3.1pp
35 to 39
+125
+5.5pp
40 to 44
+153
+3.9pp
45 to 49
+146
+0.8pp
50 to 54
+146
-3.0pp
55 to 59
+192
+5.6pp
60 to 64
+177
-0.7pp
65 to 69
+146
+3.5pp
70 to 74
+161
+4.2pp
75 to 79
+101
+1.6pp
80 to 84
+57
+2.5pp
85 and over
+46
+2.0pp
Data table
Five year age groups for Marino. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Marion (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Marion (C)% | Count | % | Marion (C)% | Count | pp | |
| 0 to 4 | 98 | 4.3% | 5.4% | 3 | 3.0% | 5.9% | +95 | +1.3pp |
| 5 to 9 | 122 | 5.4% | 5.6% | 6 | 5.9% | 5.4% | +116 | -0.5pp |
| 10 to 14 | 137 | 6.0% | 5.2% | 3 | 3.0% | 4.9% | +134 | +3.0pp |
| 15 to 19 | 124 | 5.4% | 5.1% | 3 | 3.0% | 5.7% | +121 | +2.4pp |
| 20 to 24 | 120 | 5.3% | 6.7% | 3 | 3.0% | 7.2% | +117 | +2.3pp |
| 25 to 29 | 67 | 2.9% | 7.4% | 19 | 18.8% | 7.3% | +48 | -15.9pp |
| 30 to 34 | 87 | 3.8% | 7.7% | 7 | 6.9% | 7.5% | +80 | -3.1pp |
| 35 to 39 | 125 | 5.5% | 7.5% | 0 | 0.0% | 6.8% | +125 | +5.5pp |
| 40 to 44 | 156 | 6.9% | 6.6% | 3 | 3.0% | 6.4% | +153 | +3.9pp |
| 45 to 49 | 152 | 6.7% | 6.1% | 6 | 5.9% | 6.3% | +146 | +0.8pp |
| 50 to 54 | 156 | 6.9% | 5.9% | 10 | 9.9% | 6.4% | +146 | -3.0pp |
| 55 to 59 | 195 | 8.6% | 5.9% | 3 | 3.0% | 6.6% | +192 | +5.6pp |
| 60 to 64 | 186 | 8.2% | 6.1% | 9 | 8.9% | 6.2% | +177 | -0.7pp |
| 65 to 69 | 149 | 6.5% | 5.7% | 3 | 3.0% | 5.2% | +146 | +3.5pp |
| 70 to 74 | 164 | 7.2% | 4.8% | 3 | 3.0% | 3.7% | +161 | +4.2pp |
| 75 to 79 | 104 | 4.6% | 3.3% | 3 | 3.0% | 2.9% | +101 | +1.6pp |
| 80 to 84 | 57 | 2.5% | 2.3% | 0 | 0.0% | 2.4% | +57 | +2.5pp |
| 85 and over | 46 | 2.0% | 2.9% | 0 | 0.0% | 3.1% | +46 | +2.0pp |
| Total | 2,277 | 100.0% | 100.0% | 101 | 100.0% | 100.0% | +2,176 | 0.0pp |