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, Parents and homebuilders (35 to 49) was the most common category among residents in Warradale, accounting for 20.7% (1,201 people). This share was higher than Marion (C) (20.2%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 1,198 people and 4.9 percentage points.
Section overview
Age structure - Service age groups
Warradale - Total persons (Usual residence)
This table summarises service age groups for Warradale in 2021 for persons, with comparison against Marion (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Warradale, with comparison markers for Marion (C).
Babies and pre-schoolers (0 to 4)
2021 count
284
% of total
4.9%
Change from 2016
+4.9pp
284
4.9%
+4.9pp
Primary schoolers (5 to 11)
2021 count
493
% of total
8.5%
Change from 2016
+8.5pp
493
8.5%
+8.5pp
Secondary schoolers (12 to 17)
2021 count
405
% of total
7.0%
Change from 2016
+7.0pp
405
7.0%
+7.0pp
Tertiary education and independence (18 to 24)
2021 count
395
% of total
6.8%
Change from 2016
+6.8pp
395
6.8%
+6.8pp
Young workforce (25 to 34)
2021 count
760
% of total
13.1%
Change from 2016
+13.1pp
760
13.1%
+13.1pp
Parents and homebuilders (35 to 49)
2021 count
1,201
% of total
20.7%
Change from 2016
+4.9pp
1,201
20.7%
+4.9pp
Older workers and pre-retirees (50 to 59)
2021 count
633
% of total
10.9%
Change from 2016
+10.9pp
633
10.9%
+10.9pp
Empty nesters and retirees (60 to 69)
2021 count
731
% of total
12.6%
Change from 2016
-3.2pp
731
12.6%
-3.2pp
Seniors (70 to 84)
2021 count
723
% of total
12.5%
Change from 2016
+12.5pp
723
12.5%
+12.5pp
Elderly aged (85 and over)
2021 count
186
% of total
3.2%
Change from 2016
+3.2pp
186
3.2%
+3.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+284
+4.9pp
Primary schoolers (5 to 11)
+493
+8.5pp
Secondary schoolers (12 to 17)
+405
+7.0pp
Tertiary education and independence (18 to 24)
+395
+6.8pp
Young workforce (25 to 34)
+760
+13.1pp
Parents and homebuilders (35 to 49)
+1,198
+4.9pp
Older workers and pre-retirees (50 to 59)
+633
+10.9pp
Empty nesters and retirees (60 to 69)
+728
-3.2pp
Seniors (70 to 84)
+723
+12.5pp
Elderly aged (85 and over)
+186
+3.2pp
Data table
Service age groups for Warradale. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Marion (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Marion (C)% | Count | % | Marion (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 284 | 4.9% | 5.4% | 0 | 0.0% | 5.9% | +284 | +4.9pp |
| Primary schoolers (5 to 11) | 493 | 8.5% | 7.7% | 0 | 0.0% | 7.4% | +493 | +8.5pp |
| Secondary schoolers (12 to 17) | 405 | 7.0% | 6.1% | 0 | 0.0% | 6.1% | +405 | +7.0pp |
| Tertiary education and independence (18 to 24) | 395 | 6.8% | 8.8% | 0 | 0.0% | 9.6% | +395 | +6.8pp |
| Young workforce (25 to 34) | 760 | 13.1% | 15.1% | 0 | 0.0% | 14.8% | +760 | +13.1pp |
| Parents and homebuilders (35 to 49) | 1,201 | 20.7% | 20.2% | 3 | 15.8% | 19.5% | +1,198 | +4.9pp |
| Older workers and pre-retirees (50 to 59) | 633 | 10.9% | 11.7% | 0 | 0.0% | 13.0% | +633 | +10.9pp |
| Empty nesters and retirees (60 to 69) | 731 | 12.6% | 11.8% | 3 | 15.8% | 11.4% | +728 | -3.2pp |
| Seniors (70 to 84) | 723 | 12.5% | 10.4% | 0 | 0.0% | 9.1% | +723 | +12.5pp |
| Elderly aged (85 and over) | 186 | 3.2% | 2.9% | 0 | 0.0% | 3.1% | +186 | +3.2pp |
| Total | 5,801 | 100.0% | 100.0% | 19 | 100.0% | 100.0% | +5,782 | 0.0pp |