Population
Service age groups
About this topic
Service age groups divide the population into broad life-stage bands such as children, young adults, working-age adults, and older people. The groupings are designed to reflect typical demand for age-based services and facilities rather than exact five-year cohorts.
This view is useful for planning childcare, schools, recreation, aged services, and other community infrastructure. It works best alongside five year age groups, household type, and dwelling data, which add more detail about who is living in an area and how needs may change over time.
Interpretation notes
- This is a derived grouping rather than a direct Census question, so the age bands are planning-oriented summaries built from standard age data.
- Percentages relate to the total population; use five year age groups when exact cohort detail matters.
Related topics
Key insight
In 2021, Empty nesters and retirees (60 to 69) was the most common category among residents in Yarriambiack (S), accounting for 17.3% (1,131 people). This share was higher than Regional Vic. (13.6%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 139 people and 1.8 percentage points.
Section overview
Age structure - Service age groups
Yarriambiack (S) - Total persons (Usual residence)
This table summarises service age groups for Yarriambiack (S) in 2021 for persons, with comparison against Regional Vic. and change since 2016.
Chart view
Age structure - Service age groups snapshot
2021 distribution by category for Yarriambiack (S), with comparison markers for Regional Vic..
Babies and pre-schoolers (0 to 4)
2021 count
287
% of total
4.4%
Change from 2016
0.0pp
287
4.4%
0.0pp
Primary schoolers (5 to 11)
2021 count
477
% of total
7.3%
Change from 2016
-1.1pp
477
7.3%
-1.1pp
Secondary schoolers (12 to 17)
2021 count
504
% of total
7.7%
Change from 2016
+0.6pp
504
7.7%
+0.6pp
Tertiary education and independence (18 to 24)
2021 count
340
% of total
5.2%
Change from 2016
-0.7pp
340
5.2%
-0.7pp
Young workforce (25 to 34)
2021 count
599
% of total
9.1%
Change from 2016
+0.7pp
599
9.1%
+0.7pp
Parents and homebuilders (35 to 49)
2021 count
881
% of total
13.4%
Change from 2016
-1.1pp
881
13.4%
-1.1pp
Older workers and pre-retirees (50 to 59)
2021 count
942
% of total
14.4%
Change from 2016
-1.8pp
942
14.4%
-1.8pp
Empty nesters and retirees (60 to 69)
2021 count
1,131
% of total
17.3%
Change from 2016
+2.0pp
1,131
17.3%
+2.0pp
Seniors (70 to 84)
2021 count
1,078
% of total
16.4%
Change from 2016
+1.5pp
1,078
16.4%
+1.5pp
Elderly aged (85 and over)
2021 count
293
% of total
4.5%
Change from 2016
-0.5pp
293
4.5%
-0.5pp
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-4
0.0pp
Primary schoolers (5 to 11)
-85
-1.1pp
Secondary schoolers (12 to 17)
+33
+0.6pp
Tertiary education and independence (18 to 24)
-53
-0.7pp
Young workforce (25 to 34)
+38
+0.7pp
Parents and homebuilders (35 to 49)
-90
-1.1pp
Older workers and pre-retirees (50 to 59)
-139
-1.8pp
Empty nesters and retirees (60 to 69)
+107
+2.0pp
Seniors (70 to 84)
+81
+1.5pp
Elderly aged (85 and over)
-40
-0.5pp
Data table
Service age groups for Yarriambiack (S). Age structure - Service 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 | |
| Babies and pre-schoolers (0 to 4) | 287 | 4.4% | 5.4% | 291 | 4.4% | 5.8% | -4 | 0.0pp |
| Primary schoolers (5 to 11) | 477 | 7.3% | 8.4% | 562 | 8.4% | 8.7% | -85 | -1.1pp |
| Secondary schoolers (12 to 17) | 504 | 7.7% | 7.2% | 471 | 7.1% | 7.4% | +33 | +0.6pp |
| Tertiary education and independence (18 to 24) | 340 | 5.2% | 7.3% | 393 | 5.9% | 7.9% | -53 | -0.7pp |
| Young workforce (25 to 34) | 599 | 9.1% | 11.7% | 561 | 8.4% | 10.9% | +38 | +0.7pp |
| Parents and homebuilders (35 to 49) | 881 | 13.4% | 17.6% | 971 | 14.5% | 18.1% | -90 | -1.1pp |
| Older workers and pre-retirees (50 to 59) | 942 | 14.4% | 13.1% | 1,081 | 16.2% | 13.9% | -139 | -1.8pp |
| Empty nesters and retirees (60 to 69) | 1,131 | 17.3% | 13.6% | 1,024 | 15.3% | 13.4% | +107 | +2.0pp |
| Seniors (70 to 84) | 1,078 | 16.4% | 13.0% | 997 | 14.9% | 11.1% | +81 | +1.5pp |
| Elderly aged (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 |