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 Mosman Park (T), accounting for 19.4% (1,782 people). This share was lower than Greater Perth (21%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 188 people and 1.6 percentage points.
Section overview
Age structure - Service age groups
Mosman Park (T) - Total persons (Usual residence)
This table summarises service age groups for Mosman Park (T) in 2021 for persons, with comparison against Greater Perth and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Mosman Park (T), with comparison markers for Greater Perth.
Babies and pre-schoolers (0 to 4)
2021 count
402
% of total
4.4%
Change from 2016
-0.2pp
402
4.4%
-0.2pp
Primary schoolers (5 to 11)
2021 count
742
% of total
8.1%
Change from 2016
+0.1pp
742
8.1%
+0.1pp
Secondary schoolers (12 to 17)
2021 count
792
% of total
8.6%
Change from 2016
-1.1pp
792
8.6%
-1.1pp
Tertiary education and independence (18 to 24)
2021 count
790
% of total
8.6%
Change from 2016
+0.7pp
790
8.6%
+0.7pp
Young workforce (25 to 34)
2021 count
1,023
% of total
11.2%
Change from 2016
-2.2pp
1,023
11.2%
-2.2pp
Parents and homebuilders (35 to 49)
2021 count
1,782
% of total
19.4%
Change from 2016
-0.3pp
1,782
19.4%
-0.3pp
Older workers and pre-retirees (50 to 59)
2021 count
1,299
% of total
14.2%
Change from 2016
+1.0pp
1,299
14.2%
+1.0pp
Empty nesters and retirees (60 to 69)
2021 count
1,041
% of total
11.4%
Change from 2016
+0.1pp
1,041
11.4%
+0.1pp
Seniors (70 to 84)
2021 count
1,085
% of total
11.8%
Change from 2016
+1.6pp
1,085
11.8%
+1.6pp
Elderly aged (85 and over)
2021 count
202
% of total
2.2%
Change from 2016
+0.1pp
202
2.2%
+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)
+2
-0.2pp
Primary schoolers (5 to 11)
+43
+0.1pp
Secondary schoolers (12 to 17)
-55
-1.1pp
Tertiary education and independence (18 to 24)
+96
+0.7pp
Young workforce (25 to 34)
-149
-2.2pp
Parents and homebuilders (35 to 49)
+53
-0.3pp
Older workers and pre-retirees (50 to 59)
+145
+1.0pp
Empty nesters and retirees (60 to 69)
+53
+0.1pp
Seniors (70 to 84)
+188
+1.6pp
Elderly aged (85 and over)
+16
+0.1pp
Data table
Service age groups for Mosman Park (T). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Greater Perth.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Greater Perth% | Count | % | Greater Perth% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 402 | 4.4% | 6.1% | 400 | 4.6% | 6.5% | +2 | -0.2pp |
| Primary schoolers (5 to 11) | 742 | 8.1% | 9.0% | 699 | 8.0% | 9.0% | +43 | +0.1pp |
| Secondary schoolers (12 to 17) | 792 | 8.6% | 7.4% | 847 | 9.7% | 7.2% | -55 | -1.1pp |
| Tertiary education and independence (18 to 24) | 790 | 8.6% | 8.6% | 694 | 7.9% | 9.4% | +96 | +0.7pp |
| Young workforce (25 to 34) | 1,023 | 11.2% | 14.4% | 1,172 | 13.4% | 15.8% | -149 | -2.2pp |
| Parents and homebuilders (35 to 49) | 1,782 | 19.4% | 21.0% | 1,729 | 19.7% | 20.9% | +53 | -0.3pp |
| Older workers and pre-retirees (50 to 59) | 1,299 | 14.2% | 12.4% | 1,154 | 13.2% | 12.2% | +145 | +1.0pp |
| Empty nesters and retirees (60 to 69) | 1,041 | 11.4% | 10.2% | 988 | 11.3% | 9.7% | +53 | +0.1pp |
| Seniors (70 to 84) | 1,085 | 11.8% | 9.1% | 897 | 10.2% | 7.5% | +188 | +1.6pp |
| Elderly aged (85 and over) | 202 | 2.2% | 1.9% | 186 | 2.1% | 1.8% | +16 | +0.1pp |
| Total | 9,169 | 100.0% | 100.0% | 8,757 | 100.0% | 100.0% | +412 | 0.0pp |