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, Older workers and pre-retirees (50 to 59) was the most common category among residents in Mindarie (WA), accounting for 19.8% (1,557 people). This share was higher than Wanneroo (C) (12.5%). Since 2016, the biggest change was in Young workforce (25 to 34), which decreased by 657 people and 7.9 percentage points.
Section overview
Age structure - Service age groups
Mindarie (WA) - Total persons (Usual residence)
This table summarises service age groups for Mindarie (WA) in 2021 for persons, with comparison against Wanneroo (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Mindarie (WA), with comparison markers for Wanneroo (C).
Babies and pre-schoolers (0 to 4)
2021 count
282
% of total
3.6%
Change from 2016
-4.1pp
282
3.6%
-4.1pp
Primary schoolers (5 to 11)
2021 count
624
% of total
7.9%
Change from 2016
-3.6pp
624
7.9%
-3.6pp
Secondary schoolers (12 to 17)
2021 count
748
% of total
9.5%
Change from 2016
+0.2pp
748
9.5%
+0.2pp
Tertiary education and independence (18 to 24)
2021 count
870
% of total
11.1%
Change from 2016
+0.8pp
870
11.1%
+0.8pp
Young workforce (25 to 34)
2021 count
554
% of total
7.0%
Change from 2016
-7.9pp
554
7.0%
-7.9pp
Parents and homebuilders (35 to 49)
2021 count
1,452
% of total
18.5%
Change from 2016
-0.2pp
1,452
18.5%
-0.2pp
Older workers and pre-retirees (50 to 59)
2021 count
1,557
% of total
19.8%
Change from 2016
+7.1pp
1,557
19.8%
+7.1pp
Empty nesters and retirees (60 to 69)
2021 count
840
% of total
10.7%
Change from 2016
+1.8pp
840
10.7%
+1.8pp
Seniors (70 to 84)
2021 count
775
% of total
9.9%
Change from 2016
+5.1pp
775
9.9%
+5.1pp
Elderly aged (85 and over)
2021 count
160
% of total
2.0%
Change from 2016
+1.1pp
160
2.0%
+1.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-345
-4.1pp
Primary schoolers (5 to 11)
-308
-3.6pp
Secondary schoolers (12 to 17)
-9
+0.2pp
Tertiary education and independence (18 to 24)
+35
+0.8pp
Young workforce (25 to 34)
-657
-7.9pp
Parents and homebuilders (35 to 49)
-65
-0.2pp
Older workers and pre-retirees (50 to 59)
+528
+7.1pp
Empty nesters and retirees (60 to 69)
+115
+1.8pp
Seniors (70 to 84)
+384
+5.1pp
Elderly aged (85 and over)
+90
+1.1pp
Data table
Service age groups for Mindarie (WA). 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) | 282 | 3.6% | 7.1% | 627 | 7.7% | 8.0% | -345 | -4.1pp |
| Primary schoolers (5 to 11) | 624 | 7.9% | 10.6% | 932 | 11.5% | 10.8% | -308 | -3.6pp |
| Secondary schoolers (12 to 17) | 748 | 9.5% | 8.5% | 757 | 9.3% | 8.5% | -9 | +0.2pp |
| Tertiary education and independence (18 to 24) | 870 | 11.1% | 9.0% | 835 | 10.3% | 9.6% | +35 | +0.8pp |
| Young workforce (25 to 34) | 554 | 7.0% | 13.9% | 1,211 | 14.9% | 15.7% | -657 | -7.9pp |
| Parents and homebuilders (35 to 49) | 1,452 | 18.5% | 21.7% | 1,517 | 18.7% | 22.4% | -65 | -0.2pp |
| Older workers and pre-retirees (50 to 59) | 1,557 | 19.8% | 12.5% | 1,029 | 12.7% | 11.2% | +528 | +7.1pp |
| Empty nesters and retirees (60 to 69) | 840 | 10.7% | 8.5% | 725 | 8.9% | 7.4% | +115 | +1.8pp |
| Seniors (70 to 84) | 775 | 9.9% | 7.0% | 391 | 4.8% | 5.4% | +384 | +5.1pp |
| Elderly aged (85 and over) | 160 | 2.0% | 1.3% | 70 | 0.9% | 1.0% | +90 | +1.1pp |
| Total | 7,867 | 100.0% | 100.0% | 8,110 | 100.0% | 100.0% | -243 | 0.0pp |