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, 40 to 44 year olds was the largest age group among residents in Coromandel Valley (part), accounting for 8% (350 people). This share was higher than Onkaparinga (C) (6.1%). Since 2016, the biggest change was in 40 to 44 year olds, which increased by 344 people and 4.9 percentage points.
Section overview
Age structure - Five year age groups
Coromandel Valley (part) - Total persons (Usual residence)
This table summarises five year age groups for Coromandel Valley (part) in 2021 for persons, with comparison against Onkaparinga (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Coromandel Valley (part), with comparison markers for Onkaparinga (C).
0 to 4
2021 count
244
% of total
5.6%
Change from 2016
-3.1pp
244
5.6%
-3.1pp
5 to 9
2021 count
344
% of total
7.9%
Change from 2016
-0.3pp
344
7.9%
-0.3pp
10 to 14
2021 count
329
% of total
7.5%
Change from 2016
-2.8pp
329
7.5%
-2.8pp
15 to 19
2021 count
298
% of total
6.8%
Change from 2016
-0.4pp
298
6.8%
-0.4pp
20 to 24
2021 count
220
% of total
5.0%
Change from 2016
+1.9pp
220
5.0%
+1.9pp
25 to 29
2021 count
157
% of total
3.6%
Change from 2016
-2.6pp
157
3.6%
-2.6pp
30 to 34
2021 count
242
% of total
5.5%
Change from 2016
+0.4pp
242
5.5%
+0.4pp
35 to 39
2021 count
276
% of total
6.3%
Change from 2016
+1.7pp
276
6.3%
+1.7pp
40 to 44
2021 count
350
% of total
8.0%
Change from 2016
+4.9pp
350
8.0%
+4.9pp
45 to 49
2021 count
349
% of total
8.0%
Change from 2016
+1.8pp
349
8.0%
+1.8pp
50 to 54
2021 count
315
% of total
7.2%
Change from 2016
-1.0pp
315
7.2%
-1.0pp
55 to 59
2021 count
271
% of total
6.2%
Change from 2016
-5.1pp
271
6.2%
-5.1pp
60 to 64
2021 count
278
% of total
6.3%
Change from 2016
-1.4pp
278
6.3%
-1.4pp
65 to 69
2021 count
238
% of total
5.4%
Change from 2016
+2.3pp
238
5.4%
+2.3pp
70 to 74
2021 count
221
% of total
5.0%
Change from 2016
+3.5pp
221
5.0%
+3.5pp
75 to 79
2021 count
156
% of total
3.6%
Change from 2016
+3.6pp
156
3.6%
+3.6pp
80 to 84
2021 count
74
% of total
1.7%
Change from 2016
+1.7pp
74
1.7%
+1.7pp
85 and over
2021 count
30
% of total
0.7%
Change from 2016
+0.7pp
30
0.7%
+0.7pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+227
-3.1pp
5 to 9
+328
-0.3pp
10 to 14
+309
-2.8pp
15 to 19
+284
-0.4pp
20 to 24
+214
+1.9pp
25 to 29
+145
-2.6pp
30 to 34
+232
+0.4pp
35 to 39
+267
+1.7pp
40 to 44
+344
+4.9pp
45 to 49
+337
+1.8pp
50 to 54
+299
-1.0pp
55 to 59
+249
-5.1pp
60 to 64
+263
-1.4pp
65 to 69
+232
+2.3pp
70 to 74
+218
+3.5pp
75 to 79
+156
+3.6pp
80 to 84
+74
+1.7pp
85 and over
+30
+0.7pp
Data table
Five year age groups for Coromandel Valley (part). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Onkaparinga (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Onkaparinga (C)% | Count | % | Onkaparinga (C)% | Count | pp | |
| 0 to 4 | 244 | 5.6% | 5.4% | 17 | 8.7% | 6.2% | +227 | -3.1pp |
| 5 to 9 | 344 | 7.9% | 6.2% | 16 | 8.2% | 6.4% | +328 | -0.3pp |
| 10 to 14 | 329 | 7.5% | 6.2% | 20 | 10.3% | 6.1% | +309 | -2.8pp |
| 15 to 19 | 298 | 6.8% | 5.8% | 14 | 7.2% | 6.2% | +284 | -0.4pp |
| 20 to 24 | 220 | 5.0% | 5.6% | 6 | 3.1% | 6.0% | +214 | +1.9pp |
| 25 to 29 | 157 | 3.6% | 6.0% | 12 | 6.2% | 5.9% | +145 | -2.6pp |
| 30 to 34 | 242 | 5.5% | 6.3% | 10 | 5.1% | 6.5% | +232 | +0.4pp |
| 35 to 39 | 276 | 6.3% | 6.7% | 9 | 4.6% | 6.3% | +267 | +1.7pp |
| 40 to 44 | 350 | 8.0% | 6.1% | 6 | 3.1% | 6.6% | +344 | +4.9pp |
| 45 to 49 | 349 | 8.0% | 6.4% | 12 | 6.2% | 6.9% | +337 | +1.8pp |
| 50 to 54 | 315 | 7.2% | 6.6% | 16 | 8.2% | 6.7% | +299 | -1.0pp |
| 55 to 59 | 271 | 6.2% | 6.5% | 22 | 11.3% | 6.6% | +249 | -5.1pp |
| 60 to 64 | 278 | 6.3% | 6.3% | 15 | 7.7% | 6.3% | +263 | -1.4pp |
| 65 to 69 | 238 | 5.4% | 5.9% | 6 | 3.1% | 6.1% | +232 | +2.3pp |
| 70 to 74 | 221 | 5.0% | 5.7% | 3 | 1.5% | 4.3% | +218 | +3.5pp |
| 75 to 79 | 156 | 3.6% | 3.8% | 0 | 0.0% | 2.8% | +156 | +3.6pp |
| 80 to 84 | 74 | 1.7% | 2.3% | 0 | 0.0% | 2.0% | +74 | +1.7pp |
| 85 and over | 30 | 0.7% | 2.2% | 0 | 0.0% | 2.1% | +30 | +0.7pp |
| Total | 4,380 | 100.0% | 100.0% | 195 | 100.0% | 100.0% | +4,185 | 0.0pp |