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, 50 to 54 year olds was the largest age group among residents in Whyalla, accounting for 8.8% (316 people). This share was higher than Whyalla (C) (7.3%). Since 2016, the biggest change was in 50 to 54 year olds, which increased by 310 people, while its share fell by 0.4 percentage points.
Section overview
Age structure - Five year age groups
Whyalla - Total persons (Usual residence)
This table summarises five year age groups for Whyalla in 2021 for persons, with comparison against Whyalla (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Whyalla, with comparison markers for Whyalla (C).
0 to 4
2021 count
154
% of total
4.3%
Change from 2016
+4.3pp
154
4.3%
+4.3pp
5 to 9
2021 count
192
% of total
5.3%
Change from 2016
-8.5pp
192
5.3%
-8.5pp
10 to 14
2021 count
218
% of total
6.0%
Change from 2016
-3.2pp
218
6.0%
-3.2pp
15 to 19
2021 count
202
% of total
5.6%
Change from 2016
+5.6pp
202
5.6%
+5.6pp
20 to 24
2021 count
173
% of total
4.8%
Change from 2016
+4.8pp
173
4.8%
+4.8pp
25 to 29
2021 count
194
% of total
5.4%
Change from 2016
-0.8pp
194
5.4%
-0.8pp
30 to 34
2021 count
187
% of total
5.2%
Change from 2016
-1.0pp
187
5.2%
-1.0pp
35 to 39
2021 count
218
% of total
6.0%
Change from 2016
+6.0pp
218
6.0%
+6.0pp
40 to 44
2021 count
201
% of total
5.6%
Change from 2016
+5.6pp
201
5.6%
+5.6pp
45 to 49
2021 count
261
% of total
7.2%
Change from 2016
+2.6pp
261
7.2%
+2.6pp
50 to 54
2021 count
316
% of total
8.8%
Change from 2016
-0.4pp
316
8.8%
-0.4pp
55 to 59
2021 count
291
% of total
8.1%
Change from 2016
-7.3pp
291
8.1%
-7.3pp
60 to 64
2021 count
292
% of total
8.1%
Change from 2016
+3.5pp
292
8.1%
+3.5pp
65 to 69
2021 count
213
% of total
5.9%
Change from 2016
+1.3pp
213
5.9%
+1.3pp
70 to 74
2021 count
173
% of total
4.8%
Change from 2016
+4.8pp
173
4.8%
+4.8pp
75 to 79
2021 count
122
% of total
3.4%
Change from 2016
+3.4pp
122
3.4%
+3.4pp
80 to 84
2021 count
114
% of total
3.2%
Change from 2016
+3.2pp
114
3.2%
+3.2pp
85 and over
2021 count
116
% of total
3.2%
Change from 2016
-1.4pp
116
3.2%
-1.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+154
+4.3pp
5 to 9
+183
-8.5pp
10 to 14
+212
-3.2pp
15 to 19
+202
+5.6pp
20 to 24
+173
+4.8pp
25 to 29
+190
-0.8pp
30 to 34
+183
-1.0pp
35 to 39
+218
+6.0pp
40 to 44
+201
+5.6pp
45 to 49
+258
+2.6pp
50 to 54
+310
-0.4pp
55 to 59
+281
-7.3pp
60 to 64
+289
+3.5pp
65 to 69
+210
+1.3pp
70 to 74
+173
+4.8pp
75 to 79
+122
+3.4pp
80 to 84
+114
+3.2pp
85 and over
+113
-1.4pp
Data table
Five year age groups for Whyalla. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Whyalla (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Whyalla (C)% | Count | % | Whyalla (C)% | Count | pp | |
| 0 to 4 | 154 | 4.3% | 5.4% | 0 | 0.0% | 6.1% | +154 | +4.3pp |
| 5 to 9 | 192 | 5.3% | 6.1% | 9 | 13.8% | 6.5% | +183 | -8.5pp |
| 10 to 14 | 218 | 6.0% | 6.3% | 6 | 9.2% | 6.5% | +212 | -3.2pp |
| 15 to 19 | 202 | 5.6% | 5.7% | 0 | 0.0% | 6.1% | +202 | +5.6pp |
| 20 to 24 | 173 | 4.8% | 5.8% | 0 | 0.0% | 5.9% | +173 | +4.8pp |
| 25 to 29 | 194 | 5.4% | 6.4% | 4 | 6.2% | 6.4% | +190 | -0.8pp |
| 30 to 34 | 187 | 5.2% | 6.3% | 4 | 6.2% | 6.3% | +183 | -1.0pp |
| 35 to 39 | 218 | 6.0% | 6.0% | 0 | 0.0% | 5.2% | +218 | +6.0pp |
| 40 to 44 | 201 | 5.6% | 5.1% | 0 | 0.0% | 6.6% | +201 | +5.6pp |
| 45 to 49 | 261 | 7.2% | 6.6% | 3 | 4.6% | 7.3% | +258 | +2.6pp |
| 50 to 54 | 316 | 8.8% | 7.3% | 6 | 9.2% | 7.5% | +310 | -0.4pp |
| 55 to 59 | 291 | 8.1% | 7.4% | 10 | 15.4% | 6.9% | +281 | -7.3pp |
| 60 to 64 | 292 | 8.1% | 6.7% | 3 | 4.6% | 5.4% | +289 | +3.5pp |
| 65 to 69 | 213 | 5.9% | 5.2% | 3 | 4.6% | 5.1% | +210 | +1.3pp |
| 70 to 74 | 173 | 4.8% | 4.8% | 0 | 0.0% | 4.3% | +173 | +4.8pp |
| 75 to 79 | 122 | 3.4% | 3.9% | 0 | 0.0% | 3.7% | +122 | +3.4pp |
| 80 to 84 | 114 | 3.2% | 2.9% | 0 | 0.0% | 2.1% | +114 | +3.2pp |
| 85 and over | 116 | 3.2% | 2.1% | 3 | 4.6% | 2.0% | +113 | -1.4pp |
| Total | 3,609 | 100.0% | 100.0% | 65 | 100.0% | 100.0% | +3,544 | 0.0pp |