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 Dandaragan, accounting for 20.2% (59 people). This share was higher than Dandaragan (S) (19.7%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 34 people and 8.4 percentage points.
Section overview
Age structure - Service age groups
Dandaragan - Total persons (Usual residence)
This table summarises service age groups for Dandaragan in 2021 for persons, with comparison against Dandaragan (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Dandaragan, with comparison markers for Dandaragan (S).
Babies and pre-schoolers (0 to 4)
2021 count
14
% of total
4.8%
Change from 2016
-1.7pp
14
4.8%
-1.7pp
Primary schoolers (5 to 11)
2021 count
30
% of total
10.3%
Change from 2016
+4.1pp
30
10.3%
+4.1pp
Secondary schoolers (12 to 17)
2021 count
13
% of total
4.5%
Change from 2016
+0.7pp
13
4.5%
+0.7pp
Tertiary education and independence (18 to 24)
2021 count
30
% of total
10.3%
Change from 2016
+4.4pp
30
10.3%
+4.4pp
Young workforce (25 to 34)
2021 count
27
% of total
9.2%
Change from 2016
+0.4pp
27
9.2%
+0.4pp
Parents and homebuilders (35 to 49)
2021 count
51
% of total
17.5%
Change from 2016
-1.9pp
51
17.5%
-1.9pp
Older workers and pre-retirees (50 to 59)
2021 count
34
% of total
11.6%
Change from 2016
-8.4pp
34
11.6%
-8.4pp
Empty nesters and retirees (60 to 69)
2021 count
59
% of total
20.2%
Change from 2016
+6.1pp
59
20.2%
+6.1pp
Seniors (70 to 84)
2021 count
36
% of total
12.3%
Change from 2016
-1.2pp
36
12.3%
-1.2pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
-1.8pp
0
0.0%
-1.8pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-8
-1.7pp
Primary schoolers (5 to 11)
+9
+4.1pp
Secondary schoolers (12 to 17)
0
+0.7pp
Tertiary education and independence (18 to 24)
+10
+4.4pp
Young workforce (25 to 34)
-3
+0.4pp
Parents and homebuilders (35 to 49)
-15
-1.9pp
Older workers and pre-retirees (50 to 59)
-34
-8.4pp
Empty nesters and retirees (60 to 69)
+11
+6.1pp
Seniors (70 to 84)
-10
-1.2pp
Elderly aged (85 and over)
-6
-1.8pp
Data table
Service age groups for Dandaragan. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Dandaragan (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Dandaragan (S)% | Count | % | Dandaragan (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 14 | 4.8% | 4.8% | 22 | 6.5% | 5.9% | -8 | -1.7pp |
| Primary schoolers (5 to 11) | 30 | 10.3% | 7.1% | 21 | 6.2% | 7.6% | +9 | +4.1pp |
| Secondary schoolers (12 to 17) | 13 | 4.5% | 4.2% | 13 | 3.8% | 4.4% | 0 | +0.7pp |
| Tertiary education and independence (18 to 24) | 30 | 10.3% | 4.5% | 20 | 5.9% | 4.9% | +10 | +4.4pp |
| Young workforce (25 to 34) | 27 | 9.2% | 10.7% | 30 | 8.8% | 11.3% | -3 | +0.4pp |
| Parents and homebuilders (35 to 49) | 51 | 17.5% | 17.1% | 66 | 19.4% | 17.8% | -15 | -1.9pp |
| Older workers and pre-retirees (50 to 59) | 34 | 11.6% | 14.3% | 68 | 20.0% | 16.0% | -34 | -8.4pp |
| Empty nesters and retirees (60 to 69) | 59 | 20.2% | 19.7% | 48 | 14.1% | 17.7% | +11 | +6.1pp |
| Seniors (70 to 84) | 36 | 12.3% | 15.8% | 46 | 13.5% | 12.7% | -10 | -1.2pp |
| Elderly aged (85 and over) | 0 | 0.0% | 1.8% | 6 | 1.8% | 1.5% | -6 | -1.8pp |
| Total | 292 | 100.0% | 100.0% | 340 | 100.0% | 100.0% | -48 | 0.0pp |