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 Marangaroo, accounting for 19.2% (2,013 people). This share was lower than Wanneroo (C) (21.7%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 2,013 people and 19.2 percentage points.
Section overview
Age structure - Service age groups
Marangaroo - Total persons (Usual residence)
This table summarises service age groups for Marangaroo in 2021 for persons, with comparison against Wanneroo (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Marangaroo, with comparison markers for Wanneroo (C).
Babies and pre-schoolers (0 to 4)
2021 count
604
% of total
5.8%
Change from 2016
+5.8pp
604
5.8%
+5.8pp
Primary schoolers (5 to 11)
2021 count
904
% of total
8.6%
Change from 2016
+8.6pp
904
8.6%
+8.6pp
Secondary schoolers (12 to 17)
2021 count
776
% of total
7.4%
Change from 2016
+7.4pp
776
7.4%
+7.4pp
Tertiary education and independence (18 to 24)
2021 count
955
% of total
9.1%
Change from 2016
+9.1pp
955
9.1%
+9.1pp
Young workforce (25 to 34)
2021 count
1,330
% of total
12.7%
Change from 2016
+12.7pp
1,330
12.7%
+12.7pp
Parents and homebuilders (35 to 49)
2021 count
2,013
% of total
19.2%
Change from 2016
+19.2pp
2,013
19.2%
+19.2pp
Older workers and pre-retirees (50 to 59)
2021 count
1,357
% of total
12.9%
Change from 2016
+12.9pp
1,357
12.9%
+12.9pp
Empty nesters and retirees (60 to 69)
2021 count
1,231
% of total
11.7%
Change from 2016
+11.7pp
1,231
11.7%
+11.7pp
Seniors (70 to 84)
2021 count
1,043
% of total
9.9%
Change from 2016
+9.9pp
1,043
9.9%
+9.9pp
Elderly aged (85 and over)
2021 count
254
% of total
2.4%
Change from 2016
+2.4pp
254
2.4%
+2.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+604
+5.8pp
Primary schoolers (5 to 11)
+904
+8.6pp
Secondary schoolers (12 to 17)
+776
+7.4pp
Tertiary education and independence (18 to 24)
+955
+9.1pp
Young workforce (25 to 34)
+1,330
+12.7pp
Parents and homebuilders (35 to 49)
+2,013
+19.2pp
Older workers and pre-retirees (50 to 59)
+1,357
+12.9pp
Empty nesters and retirees (60 to 69)
+1,231
+11.7pp
Seniors (70 to 84)
+1,043
+9.9pp
Elderly aged (85 and over)
+254
+2.4pp
Data table
Service age groups for Marangaroo. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Wanneroo (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Wanneroo (C)% | Count | % | Wanneroo (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 604 | 5.8% | 7.1% | 0 | 0.0% | 8.0% | +604 | +5.8pp |
| Primary schoolers (5 to 11) | 904 | 8.6% | 10.6% | 0 | 0.0% | 10.8% | +904 | +8.6pp |
| Secondary schoolers (12 to 17) | 776 | 7.4% | 8.5% | 0 | 0.0% | 8.5% | +776 | +7.4pp |
| Tertiary education and independence (18 to 24) | 955 | 9.1% | 9.0% | 0 | 0.0% | 9.6% | +955 | +9.1pp |
| Young workforce (25 to 34) | 1,330 | 12.7% | 13.9% | 0 | 0.0% | 15.7% | +1,330 | +12.7pp |
| Parents and homebuilders (35 to 49) | 2,013 | 19.2% | 21.7% | 0 | 0.0% | 22.4% | +2,013 | +19.2pp |
| Older workers and pre-retirees (50 to 59) | 1,357 | 12.9% | 12.5% | 0 | 0.0% | 11.2% | +1,357 | +12.9pp |
| Empty nesters and retirees (60 to 69) | 1,231 | 11.7% | 8.5% | 0 | 0.0% | 7.4% | +1,231 | +11.7pp |
| Seniors (70 to 84) | 1,043 | 9.9% | 7.0% | 0 | 0.0% | 5.4% | +1,043 | +9.9pp |
| Elderly aged (85 and over) | 254 | 2.4% | 1.3% | 0 | 0.0% | 1.0% | +254 | +2.4pp |
| Total | 10,483 | 100.0% | 100.0% | 11 | 100.0% | 100.0% | +10,472 | 0.0pp |