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 Marion, accounting for 7.5% (308 people). This share was similar to Marion (C) (7.4%). Since 2016, the biggest change was in 25 to 29 year olds, which increased by 73 people and 1.5 percentage points.
Section overview
Age structure - Five year age groups
Marion - Total persons (Usual residence)
This table summarises five year age groups for Marion 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 Marion, with comparison markers for Marion (C).
0 to 4
2021 count
179
% of total
4.4%
Change from 2016
-0.1pp
179
4.4%
-0.1pp
5 to 9
2021 count
163
% of total
4.0%
Change from 2016
0.0pp
163
4.0%
0.0pp
10 to 14
2021 count
172
% of total
4.2%
Change from 2016
-0.5pp
172
4.2%
-0.5pp
15 to 19
2021 count
277
% of total
6.8%
Change from 2016
-0.8pp
277
6.8%
-0.8pp
20 to 24
2021 count
270
% of total
6.6%
Change from 2016
+0.4pp
270
6.6%
+0.4pp
25 to 29
2021 count
308
% of total
7.5%
Change from 2016
+1.5pp
308
7.5%
+1.5pp
30 to 34
2021 count
290
% of total
7.1%
Change from 2016
+1.3pp
290
7.1%
+1.3pp
35 to 39
2021 count
244
% of total
5.9%
Change from 2016
+0.6pp
244
5.9%
+0.6pp
40 to 44
2021 count
217
% of total
5.3%
Change from 2016
-0.7pp
217
5.3%
-0.7pp
45 to 49
2021 count
223
% of total
5.4%
Change from 2016
+0.3pp
223
5.4%
+0.3pp
50 to 54
2021 count
208
% of total
5.1%
Change from 2016
-0.5pp
208
5.1%
-0.5pp
55 to 59
2021 count
210
% of total
5.1%
Change from 2016
0.0pp
210
5.1%
0.0pp
60 to 64
2021 count
205
% of total
5.0%
Change from 2016
-0.3pp
205
5.0%
-0.3pp
65 to 69
2021 count
220
% of total
5.4%
Change from 2016
-0.2pp
220
5.4%
-0.2pp
70 to 74
2021 count
225
% of total
5.5%
Change from 2016
-0.3pp
225
5.5%
-0.3pp
75 to 79
2021 count
248
% of total
6.0%
Change from 2016
+0.2pp
248
6.0%
+0.2pp
80 to 84
2021 count
187
% of total
4.6%
Change from 2016
+0.3pp
187
4.6%
+0.3pp
85 and over
2021 count
279
% of total
6.8%
Change from 2016
-0.3pp
279
6.8%
-0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+4
-0.1pp
5 to 9
+8
0.0pp
10 to 14
-12
-0.5pp
15 to 19
-18
-0.8pp
20 to 24
+29
+0.4pp
25 to 29
+73
+1.5pp
30 to 34
+63
+1.3pp
35 to 39
+39
+0.6pp
40 to 44
-16
-0.7pp
45 to 49
+25
+0.3pp
50 to 54
-9
-0.5pp
55 to 59
+12
0.0pp
60 to 64
0
-0.3pp
65 to 69
0
-0.2pp
70 to 74
-2
-0.3pp
75 to 79
+20
+0.2pp
80 to 84
+21
+0.3pp
85 and over
+1
-0.3pp
Data table
Five year age groups for Marion. 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 | 179 | 4.4% | 5.4% | 175 | 4.5% | 5.9% | +4 | -0.1pp |
| 5 to 9 | 163 | 4.0% | 5.6% | 155 | 4.0% | 5.4% | +8 | 0.0pp |
| 10 to 14 | 172 | 4.2% | 5.2% | 184 | 4.7% | 4.9% | -12 | -0.5pp |
| 15 to 19 | 277 | 6.8% | 5.1% | 295 | 7.6% | 5.7% | -18 | -0.8pp |
| 20 to 24 | 270 | 6.6% | 6.7% | 241 | 6.2% | 7.2% | +29 | +0.4pp |
| 25 to 29 | 308 | 7.5% | 7.4% | 235 | 6.0% | 7.3% | +73 | +1.5pp |
| 30 to 34 | 290 | 7.1% | 7.7% | 227 | 5.8% | 7.5% | +63 | +1.3pp |
| 35 to 39 | 244 | 5.9% | 7.5% | 205 | 5.3% | 6.8% | +39 | +0.6pp |
| 40 to 44 | 217 | 5.3% | 6.6% | 233 | 6.0% | 6.4% | -16 | -0.7pp |
| 45 to 49 | 223 | 5.4% | 6.1% | 198 | 5.1% | 6.3% | +25 | +0.3pp |
| 50 to 54 | 208 | 5.1% | 5.9% | 217 | 5.6% | 6.4% | -9 | -0.5pp |
| 55 to 59 | 210 | 5.1% | 5.9% | 198 | 5.1% | 6.6% | +12 | 0.0pp |
| 60 to 64 | 205 | 5.0% | 6.1% | 205 | 5.3% | 6.2% | 0 | -0.3pp |
| 65 to 69 | 220 | 5.4% | 5.7% | 220 | 5.6% | 5.2% | 0 | -0.2pp |
| 70 to 74 | 225 | 5.5% | 4.8% | 227 | 5.8% | 3.7% | -2 | -0.3pp |
| 75 to 79 | 248 | 6.0% | 3.3% | 228 | 5.8% | 2.9% | +20 | +0.2pp |
| 80 to 84 | 187 | 4.6% | 2.3% | 166 | 4.3% | 2.4% | +21 | +0.3pp |
| 85 and over | 279 | 6.8% | 2.9% | 278 | 7.1% | 3.1% | +1 | -0.3pp |
| Total | 4,101 | 100.0% | 100.0% | 3,902 | 100.0% | 100.0% | +199 | 0.0pp |