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, Seniors (70 to 84) was the most common category among residents in Lamb Island, accounting for 27.4% (138 people). This share was higher than Redland (C) (12.3%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 122 people and 16.9 percentage points.
Section overview
Age structure - Service age groups
Lamb Island - Total persons (Usual residence)
This table summarises service age groups for Lamb Island in 2021 for persons, with comparison against Redland (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Lamb Island, with comparison markers for Redland (C).
Babies and pre-schoolers (0 to 4)
2021 count
7
% of total
1.4%
Change from 2016
-5.2pp
7
1.4%
-5.2pp
Primary schoolers (5 to 11)
2021 count
5
% of total
1.0%
Change from 2016
-4.3pp
5
1.0%
-4.3pp
Secondary schoolers (12 to 17)
2021 count
17
% of total
3.4%
Change from 2016
+3.4pp
17
3.4%
+3.4pp
Tertiary education and independence (18 to 24)
2021 count
22
% of total
4.4%
Change from 2016
+2.4pp
22
4.4%
+2.4pp
Young workforce (25 to 34)
2021 count
3
% of total
0.6%
Change from 2016
-3.3pp
3
0.6%
-3.3pp
Parents and homebuilders (35 to 49)
2021 count
69
% of total
13.7%
Change from 2016
+3.8pp
69
13.7%
+3.8pp
Older workers and pre-retirees (50 to 59)
2021 count
81
% of total
16.1%
Change from 2016
+0.3pp
81
16.1%
+0.3pp
Empty nesters and retirees (60 to 69)
2021 count
122
% of total
24.2%
Change from 2016
-5.4pp
122
24.2%
-5.4pp
Seniors (70 to 84)
2021 count
138
% of total
27.4%
Change from 2016
+16.9pp
138
27.4%
+16.9pp
Elderly aged (85 and over)
2021 count
16
% of total
3.2%
Change from 2016
-2.7pp
16
3.2%
-2.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-3
-5.2pp
Primary schoolers (5 to 11)
-3
-4.3pp
Secondary schoolers (12 to 17)
+17
+3.4pp
Tertiary education and independence (18 to 24)
+19
+2.4pp
Young workforce (25 to 34)
-3
-3.3pp
Parents and homebuilders (35 to 49)
+54
+3.8pp
Older workers and pre-retirees (50 to 59)
+57
+0.3pp
Empty nesters and retirees (60 to 69)
+77
-5.4pp
Seniors (70 to 84)
+122
+16.9pp
Elderly aged (85 and over)
+7
-2.7pp
Data table
Service age groups for Lamb Island. 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) | 7 | 1.4% | 5.1% | 10 | 6.6% | 5.5% | -3 | -5.2pp |
| Primary schoolers (5 to 11) | 5 | 1.0% | 8.6% | 8 | 5.3% | 9.2% | -3 | -4.3pp |
| Secondary schoolers (12 to 17) | 17 | 3.4% | 8.0% | 0 | 0.0% | 8.1% | +17 | +3.4pp |
| Tertiary education and independence (18 to 24) | 22 | 4.4% | 7.5% | 3 | 2.0% | 8.1% | +19 | +2.4pp |
| Young workforce (25 to 34) | 3 | 0.6% | 10.1% | 6 | 3.9% | 10.7% | -3 | -3.3pp |
| Parents and homebuilders (35 to 49) | 69 | 13.7% | 19.1% | 15 | 9.9% | 19.7% | +54 | +3.8pp |
| Older workers and pre-retirees (50 to 59) | 81 | 16.1% | 13.8% | 24 | 15.8% | 14.4% | +57 | +0.3pp |
| Empty nesters and retirees (60 to 69) | 122 | 24.2% | 13.1% | 45 | 29.6% | 12.4% | +77 | -5.4pp |
| Seniors (70 to 84) | 138 | 27.4% | 12.3% | 16 | 10.5% | 9.6% | +122 | +16.9pp |
| Elderly aged (85 and over) | 16 | 3.2% | 2.4% | 9 | 5.9% | 2.2% | +7 | -2.7pp |
| Total | 504 | 100.0% | 100.0% | 152 | 100.0% | 100.0% | +352 | 0.0pp |