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, 60 to 64 year olds was the largest age group among residents in Yarriambiack (S), accounting for 9.1% (598 people). This share was higher than Regional Vic. (7%). Since 2016, the biggest change was in 45 to 49 year olds, which decreased by 106 people and 1.5 percentage points.
Section overview
Age structure - Five year age groups
Yarriambiack (S) - Total persons (Usual residence)
This table summarises five year age groups for Yarriambiack (S) in 2021 for persons, with comparison against Regional Vic. and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Yarriambiack (S), with comparison markers for Regional Vic..
0 to 4
2021 count
287
% of total
4.4%
Change from 2016
0.0pp
287
4.4%
0.0pp
5 to 9
2021 count
320
% of total
4.9%
Change from 2016
-1.1pp
320
4.9%
-1.1pp
10 to 14
2021 count
413
% of total
6.3%
Change from 2016
+0.8pp
413
6.3%
+0.8pp
15 to 19
2021 count
344
% of total
5.2%
Change from 2016
-0.3pp
344
5.2%
-0.3pp
20 to 24
2021 count
244
% of total
3.7%
Change from 2016
-0.6pp
244
3.7%
-0.6pp
25 to 29
2021 count
281
% of total
4.3%
Change from 2016
-0.1pp
281
4.3%
-0.1pp
30 to 34
2021 count
318
% of total
4.9%
Change from 2016
+0.9pp
318
4.9%
+0.9pp
35 to 39
2021 count
289
% of total
4.4%
Change from 2016
+0.6pp
289
4.4%
+0.6pp
40 to 44
2021 count
280
% of total
4.3%
Change from 2016
-0.2pp
280
4.3%
-0.2pp
45 to 49
2021 count
312
% of total
4.8%
Change from 2016
-1.5pp
312
4.8%
-1.5pp
50 to 54
2021 count
423
% of total
6.5%
Change from 2016
-1.1pp
423
6.5%
-1.1pp
55 to 59
2021 count
519
% of total
7.9%
Change from 2016
-0.7pp
519
7.9%
-0.7pp
60 to 64
2021 count
598
% of total
9.1%
Change from 2016
+1.4pp
598
9.1%
+1.4pp
65 to 69
2021 count
533
% of total
8.1%
Change from 2016
+0.5pp
533
8.1%
+0.5pp
70 to 74
2021 count
462
% of total
7.0%
Change from 2016
+0.6pp
462
7.0%
+0.6pp
75 to 79
2021 count
372
% of total
5.7%
Change from 2016
+0.9pp
372
5.7%
+0.9pp
80 to 84
2021 count
244
% of total
3.7%
Change from 2016
0.0pp
244
3.7%
0.0pp
85 and over
2021 count
293
% of total
4.5%
Change from 2016
-0.5pp
293
4.5%
-0.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-4
0.0pp
5 to 9
-83
-1.1pp
10 to 14
+43
+0.8pp
15 to 19
-20
-0.3pp
20 to 24
-45
-0.6pp
25 to 29
-10
-0.1pp
30 to 34
+48
+0.9pp
35 to 39
+35
+0.6pp
40 to 44
-19
-0.2pp
45 to 49
-106
-1.5pp
50 to 54
-83
-1.1pp
55 to 59
-56
-0.7pp
60 to 64
+84
+1.4pp
65 to 69
+23
+0.5pp
70 to 74
+36
+0.6pp
75 to 79
+50
+0.9pp
80 to 84
-5
0.0pp
85 and over
-40
-0.5pp
Data table
Five year age groups for Yarriambiack (S). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional Vic..
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional Vic.% | Count | % | Regional Vic.% | Count | pp | |
| 0 to 4 | 287 | 4.4% | 5.4% | 291 | 4.4% | 5.8% | -4 | 0.0pp |
| 5 to 9 | 320 | 4.9% | 6.0% | 403 | 6.0% | 6.3% | -83 | -1.1pp |
| 10 to 14 | 413 | 6.3% | 6.2% | 370 | 5.5% | 6.1% | +43 | +0.8pp |
| 15 to 19 | 344 | 5.2% | 5.6% | 364 | 5.5% | 6.1% | -20 | -0.3pp |
| 20 to 24 | 244 | 3.7% | 5.1% | 289 | 4.3% | 5.5% | -45 | -0.6pp |
| 25 to 29 | 281 | 4.3% | 5.8% | 291 | 4.4% | 5.4% | -10 | -0.1pp |
| 30 to 34 | 318 | 4.9% | 5.9% | 270 | 4.0% | 5.5% | +48 | +0.9pp |
| 35 to 39 | 289 | 4.4% | 5.9% | 254 | 3.8% | 5.4% | +35 | +0.6pp |
| 40 to 44 | 280 | 4.3% | 5.6% | 299 | 4.5% | 6.1% | -19 | -0.2pp |
| 45 to 49 | 312 | 4.8% | 6.1% | 418 | 6.3% | 6.6% | -106 | -1.5pp |
| 50 to 54 | 423 | 6.5% | 6.4% | 506 | 7.6% | 6.8% | -83 | -1.1pp |
| 55 to 59 | 519 | 7.9% | 6.7% | 575 | 8.6% | 7.1% | -56 | -0.7pp |
| 60 to 64 | 598 | 9.1% | 7.0% | 514 | 7.7% | 6.9% | +84 | +1.4pp |
| 65 to 69 | 533 | 8.1% | 6.7% | 510 | 7.6% | 6.6% | +23 | +0.5pp |
| 70 to 74 | 462 | 7.0% | 6.0% | 426 | 6.4% | 4.9% | +36 | +0.6pp |
| 75 to 79 | 372 | 5.7% | 4.2% | 322 | 4.8% | 3.6% | +50 | +0.9pp |
| 80 to 84 | 244 | 3.7% | 2.8% | 249 | 3.7% | 2.6% | -5 | 0.0pp |
| 85 and over | 293 | 4.5% | 2.7% | 333 | 5.0% | 2.7% | -40 | -0.5pp |
| Total | 6,556 | 100.0% | 100.0% | 6,674 | 100.0% | 100.0% | -118 | 0.0pp |