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 Dudley Park (WA), accounting for 20.4% (1,416 people). This share was higher than Mandurah (C) (15.6%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 296 people and 2.5 percentage points.
Section overview
Age structure - Service age groups
Dudley Park (WA) - Total persons (Usual residence)
This table summarises service age groups for Dudley Park (WA) in 2021 for persons, with comparison against Mandurah (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Dudley Park (WA), with comparison markers for Mandurah (C).
Babies and pre-schoolers (0 to 4)
2021 count
266
% of total
3.8%
Change from 2016
-0.7pp
266
3.8%
-0.7pp
Primary schoolers (5 to 11)
2021 count
459
% of total
6.6%
Change from 2016
+0.6pp
459
6.6%
+0.6pp
Secondary schoolers (12 to 17)
2021 count
392
% of total
5.6%
Change from 2016
-0.1pp
392
5.6%
-0.1pp
Tertiary education and independence (18 to 24)
2021 count
455
% of total
6.5%
Change from 2016
-0.7pp
455
6.5%
-0.7pp
Young workforce (25 to 34)
2021 count
598
% of total
8.6%
Change from 2016
-0.5pp
598
8.6%
-0.5pp
Parents and homebuilders (35 to 49)
2021 count
1,006
% of total
14.5%
Change from 2016
-0.5pp
1,006
14.5%
-0.5pp
Older workers and pre-retirees (50 to 59)
2021 count
936
% of total
13.5%
Change from 2016
-0.7pp
936
13.5%
-0.7pp
Empty nesters and retirees (60 to 69)
2021 count
1,096
% of total
15.8%
Change from 2016
-0.1pp
1,096
15.8%
-0.1pp
Seniors (70 to 84)
2021 count
1,416
% of total
20.4%
Change from 2016
+2.5pp
1,416
20.4%
+2.5pp
Elderly aged (85 and over)
2021 count
338
% of total
4.9%
Change from 2016
+0.6pp
338
4.9%
+0.6pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-12
-0.7pp
Primary schoolers (5 to 11)
+83
+0.6pp
Secondary schoolers (12 to 17)
+39
-0.1pp
Tertiary education and independence (18 to 24)
+5
-0.7pp
Young workforce (25 to 34)
+28
-0.5pp
Parents and homebuilders (35 to 49)
+73
-0.5pp
Older workers and pre-retirees (50 to 59)
+48
-0.7pp
Empty nesters and retirees (60 to 69)
+103
-0.1pp
Seniors (70 to 84)
+296
+2.5pp
Elderly aged (85 and over)
+71
+0.6pp
Data table
Service age groups for Dudley Park (WA). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Mandurah (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mandurah (C)% | Count | % | Mandurah (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 266 | 3.8% | 5.3% | 278 | 4.5% | 5.8% | -12 | -0.7pp |
| Primary schoolers (5 to 11) | 459 | 6.6% | 8.3% | 376 | 6.0% | 8.7% | +83 | +0.6pp |
| Secondary schoolers (12 to 17) | 392 | 5.6% | 7.2% | 353 | 5.7% | 7.1% | +39 | -0.1pp |
| Tertiary education and independence (18 to 24) | 455 | 6.5% | 7.0% | 450 | 7.2% | 7.8% | +5 | -0.7pp |
| Young workforce (25 to 34) | 598 | 8.6% | 10.2% | 570 | 9.1% | 10.9% | +28 | -0.5pp |
| Parents and homebuilders (35 to 49) | 1,006 | 14.5% | 16.9% | 933 | 15.0% | 17.9% | +73 | -0.5pp |
| Older workers and pre-retirees (50 to 59) | 936 | 13.5% | 12.8% | 888 | 14.2% | 12.8% | +48 | -0.7pp |
| Empty nesters and retirees (60 to 69) | 1,096 | 15.8% | 13.6% | 993 | 15.9% | 13.2% | +103 | -0.1pp |
| Seniors (70 to 84) | 1,416 | 20.4% | 15.6% | 1,120 | 17.9% | 13.2% | +296 | +2.5pp |
| Elderly aged (85 and over) | 338 | 4.9% | 3.0% | 267 | 4.3% | 2.6% | +71 | +0.6pp |
| Total | 6,957 | 100.0% | 100.0% | 6,240 | 100.0% | 100.0% | +717 | 0.0pp |