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, 65 to 69 year olds was the largest age group among residents in Yankalilla (DC), accounting for 11.1% (646 people). This share was higher than Regional SA (7.4%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 179 people and 2.2 percentage points.
Section overview
Age structure - Five year age groups
Yankalilla (DC) - Total persons (Usual residence)
This table summarises five year age groups for Yankalilla (DC) in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Yankalilla (DC), with comparison markers for Regional SA.
0 to 4
2021 count
230
% of total
3.9%
Change from 2016
0.0pp
230
3.9%
0.0pp
5 to 9
2021 count
280
% of total
4.8%
Change from 2016
-0.5pp
280
4.8%
-0.5pp
10 to 14
2021 count
298
% of total
5.1%
Change from 2016
+0.3pp
298
5.1%
+0.3pp
15 to 19
2021 count
237
% of total
4.1%
Change from 2016
-0.2pp
237
4.1%
-0.2pp
20 to 24
2021 count
183
% of total
3.1%
Change from 2016
-0.2pp
183
3.1%
-0.2pp
25 to 29
2021 count
163
% of total
2.8%
Change from 2016
-0.3pp
163
2.8%
-0.3pp
30 to 34
2021 count
219
% of total
3.8%
Change from 2016
-0.4pp
219
3.8%
-0.4pp
35 to 39
2021 count
248
% of total
4.3%
Change from 2016
+0.5pp
248
4.3%
+0.5pp
40 to 44
2021 count
241
% of total
4.1%
Change from 2016
-1.0pp
241
4.1%
-1.0pp
45 to 49
2021 count
334
% of total
5.7%
Change from 2016
-0.2pp
334
5.7%
-0.2pp
50 to 54
2021 count
362
% of total
6.2%
Change from 2016
-0.7pp
362
6.2%
-0.7pp
55 to 59
2021 count
460
% of total
7.9%
Change from 2016
-1.5pp
460
7.9%
-1.5pp
60 to 64
2021 count
612
% of total
10.5%
Change from 2016
-0.5pp
612
10.5%
-0.5pp
65 to 69
2021 count
646
% of total
11.1%
Change from 2016
+0.5pp
646
11.1%
+0.5pp
70 to 74
2021 count
588
% of total
10.1%
Change from 2016
+2.2pp
588
10.1%
+2.2pp
75 to 79
2021 count
359
% of total
6.2%
Change from 2016
+1.4pp
359
6.2%
+1.4pp
80 to 84
2021 count
209
% of total
3.6%
Change from 2016
+0.6pp
209
3.6%
+0.6pp
85 and over
2021 count
177
% of total
3.0%
Change from 2016
+0.3pp
177
3.0%
+0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+28
0.0pp
5 to 9
+6
-0.5pp
10 to 14
+48
+0.3pp
15 to 19
+14
-0.2pp
20 to 24
+15
-0.2pp
25 to 29
+4
-0.3pp
30 to 34
+2
-0.4pp
35 to 39
+54
+0.5pp
40 to 44
-24
-1.0pp
45 to 49
+30
-0.2pp
50 to 54
+5
-0.7pp
55 to 59
-23
-1.5pp
60 to 64
+45
-0.5pp
65 to 69
+100
+0.5pp
70 to 74
+179
+2.2pp
75 to 79
+109
+1.4pp
80 to 84
+56
+0.6pp
85 and over
+39
+0.3pp
Data table
Five year age groups for Yankalilla (DC). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional SA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional SA% | Count | % | Regional SA% | Count | pp | |
| 0 to 4 | 230 | 3.9% | 4.9% | 202 | 3.9% | 5.5% | +28 | 0.0pp |
| 5 to 9 | 280 | 4.8% | 5.7% | 274 | 5.3% | 6.1% | +6 | -0.5pp |
| 10 to 14 | 298 | 5.1% | 6.1% | 250 | 4.8% | 6.0% | +48 | +0.3pp |
| 15 to 19 | 237 | 4.1% | 5.3% | 223 | 4.3% | 5.6% | +14 | -0.2pp |
| 20 to 24 | 183 | 3.1% | 4.6% | 168 | 3.3% | 4.8% | +15 | -0.2pp |
| 25 to 29 | 163 | 2.8% | 5.1% | 159 | 3.1% | 5.1% | +4 | -0.3pp |
| 30 to 34 | 219 | 3.8% | 5.4% | 217 | 4.2% | 5.3% | +2 | -0.4pp |
| 35 to 39 | 248 | 4.3% | 5.4% | 194 | 3.8% | 5.2% | +54 | +0.5pp |
| 40 to 44 | 241 | 4.1% | 5.2% | 265 | 5.1% | 5.9% | -24 | -1.0pp |
| 45 to 49 | 334 | 5.7% | 5.8% | 304 | 5.9% | 6.7% | +30 | -0.2pp |
| 50 to 54 | 362 | 6.2% | 6.7% | 357 | 6.9% | 7.1% | +5 | -0.7pp |
| 55 to 59 | 460 | 7.9% | 7.2% | 483 | 9.4% | 7.5% | -23 | -1.5pp |
| 60 to 64 | 612 | 10.5% | 7.7% | 567 | 11.0% | 7.3% | +45 | -0.5pp |
| 65 to 69 | 646 | 11.1% | 7.4% | 546 | 10.6% | 7.1% | +100 | +0.5pp |
| 70 to 74 | 588 | 10.1% | 6.8% | 409 | 7.9% | 5.5% | +179 | +2.2pp |
| 75 to 79 | 359 | 6.2% | 4.8% | 250 | 4.8% | 3.9% | +109 | +1.4pp |
| 80 to 84 | 209 | 3.6% | 3.1% | 153 | 3.0% | 2.6% | +56 | +0.6pp |
| 85 and over | 177 | 3.0% | 2.8% | 138 | 2.7% | 2.7% | +39 | +0.3pp |
| Total | 5,834 | 100.0% | 100.0% | 5,159 | 100.0% | 100.0% | +675 | 0.0pp |