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 Girraween (NSW), accounting for 30.8% (1,926 people). This share was higher than Cumberland (A) (21%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 475 people and 4.8 percentage points.
Section overview
Age structure - Service age groups
Girraween (NSW) - Total persons (Usual residence)
This table summarises service age groups for Girraween (NSW) in 2021 for persons, with comparison against Cumberland (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Girraween (NSW), with comparison markers for Cumberland (A).
Babies and pre-schoolers (0 to 4)
2021 count
401
% of total
6.4%
Change from 2016
-1.9pp
401
6.4%
-1.9pp
Primary schoolers (5 to 11)
2021 count
996
% of total
15.9%
Change from 2016
+2.5pp
996
15.9%
+2.5pp
Secondary schoolers (12 to 17)
2021 count
481
% of total
7.7%
Change from 2016
+1.2pp
481
7.7%
+1.2pp
Tertiary education and independence (18 to 24)
2021 count
357
% of total
5.7%
Change from 2016
-0.8pp
357
5.7%
-0.8pp
Young workforce (25 to 34)
2021 count
652
% of total
10.4%
Change from 2016
-3.2pp
652
10.4%
-3.2pp
Parents and homebuilders (35 to 49)
2021 count
1,926
% of total
30.8%
Change from 2016
+4.8pp
1,926
30.8%
+4.8pp
Older workers and pre-retirees (50 to 59)
2021 count
528
% of total
8.4%
Change from 2016
-1.9pp
528
8.4%
-1.9pp
Empty nesters and retirees (60 to 69)
2021 count
422
% of total
6.7%
Change from 2016
-0.6pp
422
6.7%
-0.6pp
Seniors (70 to 84)
2021 count
397
% of total
6.3%
Change from 2016
+0.2pp
397
6.3%
+0.2pp
Elderly aged (85 and over)
2021 count
103
% of total
1.6%
Change from 2016
0.0pp
103
1.6%
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)
-63
-1.9pp
Primary schoolers (5 to 11)
+246
+2.5pp
Secondary schoolers (12 to 17)
+120
+1.2pp
Tertiary education and independence (18 to 24)
-9
-0.8pp
Young workforce (25 to 34)
-111
-3.2pp
Parents and homebuilders (35 to 49)
+475
+4.8pp
Older workers and pre-retirees (50 to 59)
-49
-1.9pp
Empty nesters and retirees (60 to 69)
+12
-0.6pp
Seniors (70 to 84)
+57
+0.2pp
Elderly aged (85 and over)
+15
0.0pp
Data table
Service age groups for Girraween (NSW). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Cumberland (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Cumberland (A)% | Count | % | Cumberland (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 401 | 6.4% | 7.0% | 464 | 8.3% | 7.8% | -63 | -1.9pp |
| Primary schoolers (5 to 11) | 996 | 15.9% | 9.4% | 750 | 13.4% | 9.4% | +246 | +2.5pp |
| Secondary schoolers (12 to 17) | 481 | 7.7% | 6.7% | 361 | 6.5% | 6.6% | +120 | +1.2pp |
| Tertiary education and independence (18 to 24) | 357 | 5.7% | 10.1% | 366 | 6.5% | 10.4% | -9 | -0.8pp |
| Young workforce (25 to 34) | 652 | 10.4% | 18.5% | 763 | 13.6% | 19.5% | -111 | -3.2pp |
| Parents and homebuilders (35 to 49) | 1,926 | 30.8% | 21.0% | 1,451 | 26.0% | 19.9% | +475 | +4.8pp |
| Older workers and pre-retirees (50 to 59) | 528 | 8.4% | 10.6% | 577 | 10.3% | 10.8% | -49 | -1.9pp |
| Empty nesters and retirees (60 to 69) | 422 | 6.7% | 8.4% | 410 | 7.3% | 7.9% | +12 | -0.6pp |
| Seniors (70 to 84) | 397 | 6.3% | 6.8% | 340 | 6.1% | 6.0% | +57 | +0.2pp |
| Elderly aged (85 and over) | 103 | 1.6% | 1.5% | 88 | 1.6% | 1.5% | +15 | 0.0pp |
| Total | 6,256 | 100.0% | 100.0% | 5,590 | 100.0% | 100.0% | +666 | 0.0pp |