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 Wirrabara, accounting for 31.7% (112 people). This share was higher than Mount Remarkable (DC) (21.9%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 82 people and 18.2 percentage points.
Section overview
Age structure - Service age groups
Wirrabara - Total persons (Usual residence)
This table summarises service age groups for Wirrabara in 2021 for persons, with comparison against Mount Remarkable (DC) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Wirrabara, with comparison markers for Mount Remarkable (DC).
Babies and pre-schoolers (0 to 4)
2021 count
0
% of total
0.0%
Change from 2016
-9.0pp
0
0.0%
-9.0pp
Primary schoolers (5 to 11)
2021 count
14
% of total
4.0%
Change from 2016
-3.2pp
14
4.0%
-3.2pp
Secondary schoolers (12 to 17)
2021 count
21
% of total
5.9%
Change from 2016
+1.9pp
21
5.9%
+1.9pp
Tertiary education and independence (18 to 24)
2021 count
12
% of total
3.4%
Change from 2016
-3.3pp
12
3.4%
-3.3pp
Young workforce (25 to 34)
2021 count
21
% of total
5.9%
Change from 2016
-4.0pp
21
5.9%
-4.0pp
Parents and homebuilders (35 to 49)
2021 count
33
% of total
9.3%
Change from 2016
-12.7pp
33
9.3%
-12.7pp
Older workers and pre-retirees (50 to 59)
2021 count
70
% of total
19.8%
Change from 2016
+4.1pp
70
19.8%
+4.1pp
Empty nesters and retirees (60 to 69)
2021 count
112
% of total
31.7%
Change from 2016
+18.2pp
112
31.7%
+18.2pp
Seniors (70 to 84)
2021 count
62
% of total
17.6%
Change from 2016
+14.9pp
62
17.6%
+14.9pp
Elderly aged (85 and over)
2021 count
3
% of total
0.8%
Change from 2016
-1.0pp
3
0.8%
-1.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-20
-9.0pp
Primary schoolers (5 to 11)
-2
-3.2pp
Secondary schoolers (12 to 17)
+12
+1.9pp
Tertiary education and independence (18 to 24)
-3
-3.3pp
Young workforce (25 to 34)
-1
-4.0pp
Parents and homebuilders (35 to 49)
-16
-12.7pp
Older workers and pre-retirees (50 to 59)
+35
+4.1pp
Empty nesters and retirees (60 to 69)
+82
+18.2pp
Seniors (70 to 84)
+56
+14.9pp
Elderly aged (85 and over)
-1
-1.0pp
Data table
Service age groups for Wirrabara. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Mount Remarkable (DC).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mount Remarkable (DC)% | Count | % | Mount Remarkable (DC)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 0 | 0.0% | 3.9% | 20 | 9.0% | 3.9% | -20 | -9.0pp |
| Primary schoolers (5 to 11) | 14 | 4.0% | 6.3% | 16 | 7.2% | 7.2% | -2 | -3.2pp |
| Secondary schoolers (12 to 17) | 21 | 5.9% | 6.6% | 9 | 4.0% | 6.4% | +12 | +1.9pp |
| Tertiary education and independence (18 to 24) | 12 | 3.4% | 4.2% | 15 | 6.7% | 5.3% | -3 | -3.3pp |
| Young workforce (25 to 34) | 21 | 5.9% | 7.2% | 22 | 9.9% | 6.4% | -1 | -4.0pp |
| Parents and homebuilders (35 to 49) | 33 | 9.3% | 13.3% | 49 | 22.0% | 15.3% | -16 | -12.7pp |
| Older workers and pre-retirees (50 to 59) | 70 | 19.8% | 17.0% | 35 | 15.7% | 19.1% | +35 | +4.1pp |
| Empty nesters and retirees (60 to 69) | 112 | 31.7% | 21.9% | 30 | 13.5% | 17.8% | +82 | +18.2pp |
| Seniors (70 to 84) | 62 | 17.6% | 16.8% | 6 | 2.7% | 15.1% | +56 | +14.9pp |
| Elderly aged (85 and over) | 3 | 0.8% | 2.7% | 4 | 1.8% | 3.0% | -1 | -1.0pp |
| Total | 353 | 100.0% | 100.0% | 223 | 100.0% | 100.0% | +130 | 0.0pp |