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, 70 to 74 year olds was the largest age group among residents in Yorke Peninsula (DC), accounting for 10.5% (1,212 people). This share was higher than Regional SA (6.8%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 277 people and 2 percentage points.
Section overview
Age structure - Five year age groups
Yorke Peninsula (DC) - Total persons (Usual residence)
This table summarises five year age groups for Yorke Peninsula (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 Yorke Peninsula (DC), with comparison markers for Regional SA.
0 to 4
2021 count
475
% of total
4.1%
Change from 2016
0.0pp
475
4.1%
0.0pp
5 to 9
2021 count
488
% of total
4.2%
Change from 2016
-0.8pp
488
4.2%
-0.8pp
10 to 14
2021 count
584
% of total
5.0%
Change from 2016
+0.2pp
584
5.0%
+0.2pp
15 to 19
2021 count
404
% of total
3.5%
Change from 2016
-0.7pp
404
3.5%
-0.7pp
20 to 24
2021 count
372
% of total
3.2%
Change from 2016
+0.3pp
372
3.2%
+0.3pp
25 to 29
2021 count
417
% of total
3.6%
Change from 2016
+0.3pp
417
3.6%
+0.3pp
30 to 34
2021 count
437
% of total
3.8%
Change from 2016
0.0pp
437
3.8%
0.0pp
35 to 39
2021 count
478
% of total
4.1%
Change from 2016
+0.1pp
478
4.1%
+0.1pp
40 to 44
2021 count
473
% of total
4.1%
Change from 2016
-0.1pp
473
4.1%
-0.1pp
45 to 49
2021 count
516
% of total
4.4%
Change from 2016
-1.1pp
516
4.4%
-1.1pp
50 to 54
2021 count
711
% of total
6.1%
Change from 2016
-1.1pp
711
6.1%
-1.1pp
55 to 59
2021 count
949
% of total
8.2%
Change from 2016
-0.8pp
949
8.2%
-0.8pp
60 to 64
2021 count
1,160
% of total
10.0%
Change from 2016
+0.2pp
1,160
10.0%
+0.2pp
65 to 69
2021 count
1,200
% of total
10.3%
Change from 2016
0.0pp
1,200
10.3%
0.0pp
70 to 74
2021 count
1,212
% of total
10.5%
Change from 2016
+2.0pp
1,212
10.5%
+2.0pp
75 to 79
2021 count
834
% of total
7.2%
Change from 2016
+1.6pp
834
7.2%
+1.6pp
80 to 84
2021 count
472
% of total
4.1%
Change from 2016
+0.1pp
472
4.1%
+0.1pp
85 and over
2021 count
428
% of total
3.7%
Change from 2016
-0.5pp
428
3.7%
-0.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+23
0.0pp
5 to 9
-61
-0.8pp
10 to 14
+48
+0.2pp
15 to 19
-61
-0.7pp
20 to 24
+51
+0.3pp
25 to 29
+47
+0.3pp
30 to 34
+15
0.0pp
35 to 39
+40
+0.1pp
40 to 44
+12
-0.1pp
45 to 49
-94
-1.1pp
50 to 54
-82
-1.1pp
55 to 59
-45
-0.8pp
60 to 64
+81
+0.2pp
65 to 69
+62
0.0pp
70 to 74
+277
+2.0pp
75 to 79
+219
+1.6pp
80 to 84
+33
+0.1pp
85 and over
-36
-0.5pp
Data table
Five year age groups for Yorke Peninsula (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 | 475 | 4.1% | 4.9% | 452 | 4.1% | 5.5% | +23 | 0.0pp |
| 5 to 9 | 488 | 4.2% | 5.7% | 549 | 5.0% | 6.1% | -61 | -0.8pp |
| 10 to 14 | 584 | 5.0% | 6.1% | 536 | 4.8% | 6.0% | +48 | +0.2pp |
| 15 to 19 | 404 | 3.5% | 5.3% | 465 | 4.2% | 5.6% | -61 | -0.7pp |
| 20 to 24 | 372 | 3.2% | 4.6% | 321 | 2.9% | 4.8% | +51 | +0.3pp |
| 25 to 29 | 417 | 3.6% | 5.1% | 370 | 3.3% | 5.1% | +47 | +0.3pp |
| 30 to 34 | 437 | 3.8% | 5.4% | 422 | 3.8% | 5.3% | +15 | 0.0pp |
| 35 to 39 | 478 | 4.1% | 5.4% | 438 | 4.0% | 5.2% | +40 | +0.1pp |
| 40 to 44 | 473 | 4.1% | 5.2% | 461 | 4.2% | 5.9% | +12 | -0.1pp |
| 45 to 49 | 516 | 4.4% | 5.8% | 610 | 5.5% | 6.7% | -94 | -1.1pp |
| 50 to 54 | 711 | 6.1% | 6.7% | 793 | 7.2% | 7.1% | -82 | -1.1pp |
| 55 to 59 | 949 | 8.2% | 7.2% | 994 | 9.0% | 7.5% | -45 | -0.8pp |
| 60 to 64 | 1,160 | 10.0% | 7.7% | 1,079 | 9.8% | 7.3% | +81 | +0.2pp |
| 65 to 69 | 1,200 | 10.3% | 7.4% | 1,138 | 10.3% | 7.1% | +62 | 0.0pp |
| 70 to 74 | 1,212 | 10.5% | 6.8% | 935 | 8.5% | 5.5% | +277 | +2.0pp |
| 75 to 79 | 834 | 7.2% | 4.8% | 615 | 5.6% | 3.9% | +219 | +1.6pp |
| 80 to 84 | 472 | 4.1% | 3.1% | 439 | 4.0% | 2.6% | +33 | +0.1pp |
| 85 and over | 428 | 3.7% | 2.8% | 464 | 4.2% | 2.7% | -36 | -0.5pp |
| Total | 11,598 | 100.0% | 100.0% | 11,056 | 100.0% | 100.0% | +542 | 0.0pp |