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, 25 to 29 year olds was the largest age group among residents in Seacombe Gardens, accounting for 9.6% (325 people). This share was higher than Marion (C) (7.4%). Since 2016, the biggest change was in 20 to 24 year olds, which increased by 82 people and 1.7 percentage points.
Section overview
Age structure - Five year age groups
Seacombe Gardens - Total persons (Usual residence)
This table summarises five year age groups for Seacombe Gardens 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 Seacombe Gardens, with comparison markers for Marion (C).
0 to 4
2021 count
187
% of total
5.5%
Change from 2016
-1.6pp
187
5.5%
-1.6pp
5 to 9
2021 count
189
% of total
5.6%
Change from 2016
+0.5pp
189
5.6%
+0.5pp
10 to 14
2021 count
139
% of total
4.1%
Change from 2016
0.0pp
139
4.1%
0.0pp
15 to 19
2021 count
156
% of total
4.6%
Change from 2016
-0.7pp
156
4.6%
-0.7pp
20 to 24
2021 count
302
% of total
9.0%
Change from 2016
+1.7pp
302
9.0%
+1.7pp
25 to 29
2021 count
325
% of total
9.6%
Change from 2016
+0.5pp
325
9.6%
+0.5pp
30 to 34
2021 count
325
% of total
9.6%
Change from 2016
-0.4pp
325
9.6%
-0.4pp
35 to 39
2021 count
268
% of total
7.9%
Change from 2016
+1.4pp
268
7.9%
+1.4pp
40 to 44
2021 count
211
% of total
6.3%
Change from 2016
+0.5pp
211
6.3%
+0.5pp
45 to 49
2021 count
190
% of total
5.6%
Change from 2016
+0.4pp
190
5.6%
+0.4pp
50 to 54
2021 count
161
% of total
4.8%
Change from 2016
-1.8pp
161
4.8%
-1.8pp
55 to 59
2021 count
177
% of total
5.2%
Change from 2016
+0.2pp
177
5.2%
+0.2pp
60 to 64
2021 count
165
% of total
4.9%
Change from 2016
-1.3pp
165
4.9%
-1.3pp
65 to 69
2021 count
178
% of total
5.3%
Change from 2016
+0.2pp
178
5.3%
+0.2pp
70 to 74
2021 count
161
% of total
4.8%
Change from 2016
+0.8pp
161
4.8%
+0.8pp
75 to 79
2021 count
113
% of total
3.4%
Change from 2016
+0.1pp
113
3.4%
+0.1pp
80 to 84
2021 count
59
% of total
1.7%
Change from 2016
-1.0pp
59
1.7%
-1.0pp
85 and over
2021 count
79
% of total
2.3%
Change from 2016
-0.1pp
79
2.3%
-0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-28
-1.6pp
5 to 9
+37
+0.5pp
10 to 14
+17
0.0pp
15 to 19
-3
-0.7pp
20 to 24
+82
+1.7pp
25 to 29
+51
+0.5pp
30 to 34
+24
-0.4pp
35 to 39
+72
+1.4pp
40 to 44
+36
+0.5pp
45 to 49
+35
+0.4pp
50 to 54
-38
-1.8pp
55 to 59
+27
+0.2pp
60 to 64
-20
-1.3pp
65 to 69
+26
+0.2pp
70 to 74
+40
+0.8pp
75 to 79
+15
+0.1pp
80 to 84
-21
-1.0pp
85 and over
+8
-0.1pp
Data table
Five year age groups for Seacombe Gardens. 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 | 187 | 5.5% | 5.4% | 215 | 7.1% | 5.9% | -28 | -1.6pp |
| 5 to 9 | 189 | 5.6% | 5.6% | 152 | 5.1% | 5.4% | +37 | +0.5pp |
| 10 to 14 | 139 | 4.1% | 5.2% | 122 | 4.1% | 4.9% | +17 | 0.0pp |
| 15 to 19 | 156 | 4.6% | 5.1% | 159 | 5.3% | 5.7% | -3 | -0.7pp |
| 20 to 24 | 302 | 9.0% | 6.7% | 220 | 7.3% | 7.2% | +82 | +1.7pp |
| 25 to 29 | 325 | 9.6% | 7.4% | 274 | 9.1% | 7.3% | +51 | +0.5pp |
| 30 to 34 | 325 | 9.6% | 7.7% | 301 | 10.0% | 7.5% | +24 | -0.4pp |
| 35 to 39 | 268 | 7.9% | 7.5% | 196 | 6.5% | 6.8% | +72 | +1.4pp |
| 40 to 44 | 211 | 6.3% | 6.6% | 175 | 5.8% | 6.4% | +36 | +0.5pp |
| 45 to 49 | 190 | 5.6% | 6.1% | 155 | 5.2% | 6.3% | +35 | +0.4pp |
| 50 to 54 | 161 | 4.8% | 5.9% | 199 | 6.6% | 6.4% | -38 | -1.8pp |
| 55 to 59 | 177 | 5.2% | 5.9% | 150 | 5.0% | 6.6% | +27 | +0.2pp |
| 60 to 64 | 165 | 4.9% | 6.1% | 185 | 6.2% | 6.2% | -20 | -1.3pp |
| 65 to 69 | 178 | 5.3% | 5.7% | 152 | 5.1% | 5.2% | +26 | +0.2pp |
| 70 to 74 | 161 | 4.8% | 4.8% | 121 | 4.0% | 3.7% | +40 | +0.8pp |
| 75 to 79 | 113 | 3.4% | 3.3% | 98 | 3.3% | 2.9% | +15 | +0.1pp |
| 80 to 84 | 59 | 1.7% | 2.3% | 80 | 2.7% | 2.4% | -21 | -1.0pp |
| 85 and over | 79 | 2.3% | 2.9% | 71 | 2.4% | 3.1% | +8 | -0.1pp |
| Total | 3,373 | 100.0% | 100.0% | 3,007 | 100.0% | 100.0% | +366 | 0.0pp |