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, Young workforce (25 to 34) was the most common category among residents in Collingwood (Vic.), accounting for 36.5% (3,352 people). This share was higher than Yarra (C) (29.9%). Since 2016, the biggest change was in Young workforce (25 to 34), which increased by 3,315 people and 30.4 percentage points.
Section overview
Age structure - Service age groups
Collingwood (Vic.) - Total persons (Usual residence)
This table summarises service age groups for Collingwood (Vic.) in 2021 for persons, with comparison against Yarra (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Collingwood (Vic.), with comparison markers for Yarra (C).
Babies and pre-schoolers (0 to 4)
2021 count
376
% of total
4.1%
Change from 2016
-0.7pp
376
4.1%
-0.7pp
Primary schoolers (5 to 11)
2021 count
391
% of total
4.3%
Change from 2016
-6.9pp
391
4.3%
-6.9pp
Secondary schoolers (12 to 17)
2021 count
251
% of total
2.7%
Change from 2016
-8.0pp
251
2.7%
-8.0pp
Tertiary education and independence (18 to 24)
2021 count
729
% of total
7.9%
Change from 2016
+1.0pp
729
7.9%
+1.0pp
Young workforce (25 to 34)
2021 count
3,352
% of total
36.5%
Change from 2016
+30.4pp
3,352
36.5%
+30.4pp
Parents and homebuilders (35 to 49)
2021 count
2,321
% of total
25.3%
Change from 2016
+3.2pp
2,321
25.3%
+3.2pp
Older workers and pre-retirees (50 to 59)
2021 count
799
% of total
8.7%
Change from 2016
-7.2pp
799
8.7%
-7.2pp
Empty nesters and retirees (60 to 69)
2021 count
542
% of total
5.9%
Change from 2016
-8.3pp
542
5.9%
-8.3pp
Seniors (70 to 84)
2021 count
351
% of total
3.8%
Change from 2016
-5.0pp
351
3.8%
-5.0pp
Elderly aged (85 and over)
2021 count
69
% of total
0.8%
Change from 2016
+0.1pp
69
0.8%
+0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+347
-0.7pp
Primary schoolers (5 to 11)
+323
-6.9pp
Secondary schoolers (12 to 17)
+186
-8.0pp
Tertiary education and independence (18 to 24)
+687
+1.0pp
Young workforce (25 to 34)
+3,315
+30.4pp
Parents and homebuilders (35 to 49)
+2,187
+3.2pp
Older workers and pre-retirees (50 to 59)
+703
-7.2pp
Empty nesters and retirees (60 to 69)
+456
-8.3pp
Seniors (70 to 84)
+298
-5.0pp
Elderly aged (85 and over)
+65
+0.1pp
Data table
Service age groups for Collingwood (Vic.). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Yarra (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Yarra (C)% | Count | % | Yarra (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 376 | 4.1% | 4.0% | 29 | 4.8% | 4.6% | +347 | -0.7pp |
| Primary schoolers (5 to 11) | 391 | 4.3% | 4.7% | 68 | 11.2% | 4.9% | +323 | -6.9pp |
| Secondary schoolers (12 to 17) | 251 | 2.7% | 3.5% | 65 | 10.7% | 3.3% | +186 | -8.0pp |
| Tertiary education and independence (18 to 24) | 729 | 7.9% | 8.5% | 42 | 6.9% | 9.6% | +687 | +1.0pp |
| Young workforce (25 to 34) | 3,352 | 36.5% | 29.9% | 37 | 6.1% | 30.6% | +3,315 | +30.4pp |
| Parents and homebuilders (35 to 49) | 2,321 | 25.3% | 22.7% | 134 | 22.1% | 22.3% | +2,187 | +3.2pp |
| Older workers and pre-retirees (50 to 59) | 799 | 8.7% | 10.5% | 96 | 15.9% | 10.1% | +703 | -7.2pp |
| Empty nesters and retirees (60 to 69) | 542 | 5.9% | 8.0% | 86 | 14.2% | 7.7% | +456 | -8.3pp |
| Seniors (70 to 84) | 351 | 3.8% | 6.8% | 53 | 8.8% | 5.7% | +298 | -5.0pp |
| Elderly aged (85 and over) | 69 | 0.8% | 1.4% | 4 | 0.7% | 1.2% | +65 | +0.1pp |
| Total | 9,179 | 100.0% | 100.0% | 605 | 100.0% | 100.0% | +8,574 | 0.0pp |