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, Older workers and pre-retirees (50 to 59) was the most common category among residents in Warrandyte, accounting for 18% (995 people). This share was higher than Manningham (C) (13.5%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which decreased by 184 people and 3.4 percentage points.
Section overview
Age structure - Service age groups
Warrandyte - Total persons (Usual residence)
This table summarises service age groups for Warrandyte in 2021 for persons, with comparison against Manningham (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Warrandyte, with comparison markers for Manningham (C).
Babies and pre-schoolers (0 to 4)
2021 count
229
% of total
4.1%
Change from 2016
+0.3pp
229
4.1%
+0.3pp
Primary schoolers (5 to 11)
2021 count
432
% of total
7.8%
Change from 2016
-2.2pp
432
7.8%
-2.2pp
Secondary schoolers (12 to 17)
2021 count
585
% of total
10.6%
Change from 2016
+0.1pp
585
10.6%
+0.1pp
Tertiary education and independence (18 to 24)
2021 count
581
% of total
10.5%
Change from 2016
+1.0pp
581
10.5%
+1.0pp
Young workforce (25 to 34)
2021 count
333
% of total
6.0%
Change from 2016
-1.4pp
333
6.0%
-1.4pp
Parents and homebuilders (35 to 49)
2021 count
974
% of total
17.6%
Change from 2016
-3.4pp
974
17.6%
-3.4pp
Older workers and pre-retirees (50 to 59)
2021 count
995
% of total
18.0%
Change from 2016
+1.5pp
995
18.0%
+1.5pp
Empty nesters and retirees (60 to 69)
2021 count
750
% of total
13.5%
Change from 2016
+0.4pp
750
13.5%
+0.4pp
Seniors (70 to 84)
2021 count
584
% of total
10.5%
Change from 2016
+2.7pp
584
10.5%
+2.7pp
Elderly aged (85 and over)
2021 count
59
% of total
1.1%
Change from 2016
+0.4pp
59
1.1%
+0.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+21
+0.3pp
Primary schoolers (5 to 11)
-118
-2.2pp
Secondary schoolers (12 to 17)
+8
+0.1pp
Tertiary education and independence (18 to 24)
+60
+1.0pp
Young workforce (25 to 34)
-76
-1.4pp
Parents and homebuilders (35 to 49)
-184
-3.4pp
Older workers and pre-retirees (50 to 59)
+89
+1.5pp
Empty nesters and retirees (60 to 69)
+28
+0.4pp
Seniors (70 to 84)
+156
+2.7pp
Elderly aged (85 and over)
+18
+0.4pp
Data table
Service age groups for Warrandyte. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Manningham (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Manningham (C)% | Count | % | Manningham (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 229 | 4.1% | 4.5% | 208 | 3.8% | 4.8% | +21 | +0.3pp |
| Primary schoolers (5 to 11) | 432 | 7.8% | 8.2% | 550 | 10.0% | 7.9% | -118 | -2.2pp |
| Secondary schoolers (12 to 17) | 585 | 10.6% | 7.1% | 577 | 10.5% | 7.3% | +8 | +0.1pp |
| Tertiary education and independence (18 to 24) | 581 | 10.5% | 8.2% | 521 | 9.5% | 8.9% | +60 | +1.0pp |
| Young workforce (25 to 34) | 333 | 6.0% | 10.7% | 409 | 7.4% | 11.1% | -76 | -1.4pp |
| Parents and homebuilders (35 to 49) | 974 | 17.6% | 19.4% | 1,158 | 21.0% | 19.3% | -184 | -3.4pp |
| Older workers and pre-retirees (50 to 59) | 995 | 18.0% | 13.5% | 906 | 16.5% | 13.7% | +89 | +1.5pp |
| Empty nesters and retirees (60 to 69) | 750 | 13.5% | 11.5% | 722 | 13.1% | 11.4% | +28 | +0.4pp |
| Seniors (70 to 84) | 584 | 10.5% | 13.3% | 428 | 7.8% | 12.5% | +156 | +2.7pp |
| Elderly aged (85 and over) | 59 | 1.1% | 3.7% | 41 | 0.7% | 3.2% | +18 | +0.4pp |
| Total | 5,541 | 100.0% | 100.0% | 5,502 | 100.0% | 100.0% | +39 | 0.0pp |