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 Dunwich, accounting for 17.4% (128 people). This share was lower than Redland (C) (19.1%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which decreased by 57 people and 4 percentage points.
Section overview
Age structure - Service age groups
Dunwich - Total persons (Usual residence)
This table summarises service age groups for Dunwich in 2021 for persons, with comparison against Redland (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Dunwich, with comparison markers for Redland (C).
Babies and pre-schoolers (0 to 4)
2021 count
37
% of total
5.0%
Change from 2016
-2.4pp
37
5.0%
-2.4pp
Primary schoolers (5 to 11)
2021 count
58
% of total
7.9%
Change from 2016
-3.6pp
58
7.9%
-3.6pp
Secondary schoolers (12 to 17)
2021 count
65
% of total
8.8%
Change from 2016
+0.5pp
65
8.8%
+0.5pp
Tertiary education and independence (18 to 24)
2021 count
51
% of total
6.9%
Change from 2016
-0.4pp
51
6.9%
-0.4pp
Young workforce (25 to 34)
2021 count
56
% of total
7.6%
Change from 2016
-0.5pp
56
7.6%
-0.5pp
Parents and homebuilders (35 to 49)
2021 count
128
% of total
17.4%
Change from 2016
-4.0pp
128
17.4%
-4.0pp
Older workers and pre-retirees (50 to 59)
2021 count
89
% of total
12.1%
Change from 2016
-2.4pp
89
12.1%
-2.4pp
Empty nesters and retirees (60 to 69)
2021 count
115
% of total
15.6%
Change from 2016
+0.2pp
115
15.6%
+0.2pp
Seniors (70 to 84)
2021 count
121
% of total
16.4%
Change from 2016
+6.1pp
121
16.4%
+6.1pp
Elderly aged (85 and over)
2021 count
10
% of total
1.4%
Change from 2016
0.0pp
10
1.4%
0.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-27
-2.4pp
Primary schoolers (5 to 11)
-41
-3.6pp
Secondary schoolers (12 to 17)
-7
+0.5pp
Tertiary education and independence (18 to 24)
-12
-0.4pp
Young workforce (25 to 34)
-14
-0.5pp
Parents and homebuilders (35 to 49)
-57
-4.0pp
Older workers and pre-retirees (50 to 59)
-36
-2.4pp
Empty nesters and retirees (60 to 69)
-18
+0.2pp
Seniors (70 to 84)
+32
+6.1pp
Elderly aged (85 and over)
-2
0.0pp
Data table
Service age groups for Dunwich. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Redland (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Redland (C)% | Count | % | Redland (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 37 | 5.0% | 5.1% | 64 | 7.4% | 5.5% | -27 | -2.4pp |
| Primary schoolers (5 to 11) | 58 | 7.9% | 8.6% | 99 | 11.5% | 9.2% | -41 | -3.6pp |
| Secondary schoolers (12 to 17) | 65 | 8.8% | 8.0% | 72 | 8.3% | 8.1% | -7 | +0.5pp |
| Tertiary education and independence (18 to 24) | 51 | 6.9% | 7.5% | 63 | 7.3% | 8.1% | -12 | -0.4pp |
| Young workforce (25 to 34) | 56 | 7.6% | 10.1% | 70 | 8.1% | 10.7% | -14 | -0.5pp |
| Parents and homebuilders (35 to 49) | 128 | 17.4% | 19.1% | 185 | 21.4% | 19.7% | -57 | -4.0pp |
| Older workers and pre-retirees (50 to 59) | 89 | 12.1% | 13.8% | 125 | 14.5% | 14.4% | -36 | -2.4pp |
| Empty nesters and retirees (60 to 69) | 115 | 15.6% | 13.1% | 133 | 15.4% | 12.4% | -18 | +0.2pp |
| Seniors (70 to 84) | 121 | 16.4% | 12.3% | 89 | 10.3% | 9.6% | +32 | +6.1pp |
| Elderly aged (85 and over) | 10 | 1.4% | 2.4% | 12 | 1.4% | 2.2% | -2 | 0.0pp |
| Total | 737 | 100.0% | 100.0% | 864 | 100.0% | 100.0% | -127 | 0.0pp |