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 Gumdale, accounting for 25.2% (578 people). This share was higher than Brisbane (C) (22.1%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 51 people and 1.8 percentage points.
Section overview
Age structure - Service age groups
Gumdale - Total persons (Usual residence)
This table summarises service age groups for Gumdale in 2021 for persons, with comparison against Brisbane (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Gumdale, with comparison markers for Brisbane (C).
Babies and pre-schoolers (0 to 4)
2021 count
128
% of total
5.6%
Change from 2016
-0.6pp
128
5.6%
-0.6pp
Primary schoolers (5 to 11)
2021 count
320
% of total
13.9%
Change from 2016
+0.9pp
320
13.9%
+0.9pp
Secondary schoolers (12 to 17)
2021 count
268
% of total
11.7%
Change from 2016
+0.9pp
268
11.7%
+0.9pp
Tertiary education and independence (18 to 24)
2021 count
210
% of total
9.1%
Change from 2016
-0.1pp
210
9.1%
-0.1pp
Young workforce (25 to 34)
2021 count
160
% of total
7.0%
Change from 2016
-2.3pp
160
7.0%
-2.3pp
Parents and homebuilders (35 to 49)
2021 count
578
% of total
25.2%
Change from 2016
0.0pp
578
25.2%
0.0pp
Older workers and pre-retirees (50 to 59)
2021 count
284
% of total
12.4%
Change from 2016
+0.9pp
284
12.4%
+0.9pp
Empty nesters and retirees (60 to 69)
2021 count
184
% of total
8.0%
Change from 2016
-1.0pp
184
8.0%
-1.0pp
Seniors (70 to 84)
2021 count
156
% of total
6.8%
Change from 2016
+1.8pp
156
6.8%
+1.8pp
Elderly aged (85 and over)
2021 count
15
% of total
0.7%
Change from 2016
-0.1pp
15
0.7%
-0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-4
-0.6pp
Primary schoolers (5 to 11)
+44
+0.9pp
Secondary schoolers (12 to 17)
+40
+0.9pp
Tertiary education and independence (18 to 24)
+16
-0.1pp
Young workforce (25 to 34)
-38
-2.3pp
Parents and homebuilders (35 to 49)
+44
0.0pp
Older workers and pre-retirees (50 to 59)
+40
+0.9pp
Empty nesters and retirees (60 to 69)
-7
-1.0pp
Seniors (70 to 84)
+51
+1.8pp
Elderly aged (85 and over)
-1
-0.1pp
Data table
Service age groups for Gumdale. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Brisbane (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Brisbane (C)% | Count | % | Brisbane (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 128 | 5.6% | 5.5% | 132 | 6.2% | 6.0% | -4 | -0.6pp |
| Primary schoolers (5 to 11) | 320 | 13.9% | 8.4% | 276 | 13.0% | 8.3% | +44 | +0.9pp |
| Secondary schoolers (12 to 17) | 268 | 11.7% | 7.0% | 228 | 10.8% | 6.7% | +40 | +0.9pp |
| Tertiary education and independence (18 to 24) | 210 | 9.1% | 10.4% | 194 | 9.2% | 11.5% | +16 | -0.1pp |
| Young workforce (25 to 34) | 160 | 7.0% | 16.6% | 198 | 9.3% | 17.3% | -38 | -2.3pp |
| Parents and homebuilders (35 to 49) | 578 | 25.2% | 22.1% | 534 | 25.2% | 21.5% | +44 | 0.0pp |
| Older workers and pre-retirees (50 to 59) | 284 | 12.4% | 11.8% | 244 | 11.5% | 11.6% | +40 | +0.9pp |
| Empty nesters and retirees (60 to 69) | 184 | 8.0% | 8.8% | 191 | 9.0% | 8.6% | -7 | -1.0pp |
| Seniors (70 to 84) | 156 | 6.8% | 7.7% | 105 | 5.0% | 6.6% | +51 | +1.8pp |
| Elderly aged (85 and over) | 15 | 0.7% | 1.8% | 16 | 0.8% | 1.8% | -1 | -0.1pp |
| Total | 2,298 | 100.0% | 100.0% | 2,118 | 100.0% | 100.0% | +180 | 0.0pp |