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 Quindalup, accounting for 19.6% (291 people). This share was similar to Busselton (C) (19.6%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 99 people and 5.7 percentage points.
Section overview
Age structure - Service age groups
Quindalup - Total persons (Usual residence)
This table summarises service age groups for Quindalup in 2021 for persons, with comparison against Busselton (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Quindalup, with comparison markers for Busselton (C).
Babies and pre-schoolers (0 to 4)
2021 count
62
% of total
4.2%
Change from 2016
-1.4pp
62
4.2%
-1.4pp
Primary schoolers (5 to 11)
2021 count
124
% of total
8.3%
Change from 2016
-1.2pp
124
8.3%
-1.2pp
Secondary schoolers (12 to 17)
2021 count
113
% of total
7.6%
Change from 2016
-0.2pp
113
7.6%
-0.2pp
Tertiary education and independence (18 to 24)
2021 count
57
% of total
3.8%
Change from 2016
-1.3pp
57
3.8%
-1.3pp
Young workforce (25 to 34)
2021 count
97
% of total
6.5%
Change from 2016
-3.2pp
97
6.5%
-3.2pp
Parents and homebuilders (35 to 49)
2021 count
291
% of total
19.6%
Change from 2016
-1.2pp
291
19.6%
-1.2pp
Older workers and pre-retirees (50 to 59)
2021 count
250
% of total
16.8%
Change from 2016
-0.4pp
250
16.8%
-0.4pp
Empty nesters and retirees (60 to 69)
2021 count
258
% of total
17.3%
Change from 2016
+1.7pp
258
17.3%
+1.7pp
Seniors (70 to 84)
2021 count
216
% of total
14.5%
Change from 2016
+5.7pp
216
14.5%
+5.7pp
Elderly aged (85 and over)
2021 count
9
% of total
0.6%
Change from 2016
-0.5pp
9
0.6%
-0.5pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-13
-1.4pp
Primary schoolers (5 to 11)
-3
-1.2pp
Secondary schoolers (12 to 17)
+9
-0.2pp
Tertiary education and independence (18 to 24)
-11
-1.3pp
Young workforce (25 to 34)
-33
-3.2pp
Parents and homebuilders (35 to 49)
+13
-1.2pp
Older workers and pre-retirees (50 to 59)
+20
-0.4pp
Empty nesters and retirees (60 to 69)
+50
+1.7pp
Seniors (70 to 84)
+99
+5.7pp
Elderly aged (85 and over)
-6
-0.5pp
Data table
Service age groups for Quindalup. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Busselton (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Busselton (C)% | Count | % | Busselton (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 62 | 4.2% | 5.0% | 75 | 5.6% | 6.1% | -13 | -1.4pp |
| Primary schoolers (5 to 11) | 124 | 8.3% | 9.4% | 127 | 9.5% | 10.1% | -3 | -1.2pp |
| Secondary schoolers (12 to 17) | 113 | 7.6% | 8.1% | 104 | 7.8% | 8.1% | +9 | -0.2pp |
| Tertiary education and independence (18 to 24) | 57 | 3.8% | 5.2% | 68 | 5.1% | 5.8% | -11 | -1.3pp |
| Young workforce (25 to 34) | 97 | 6.5% | 9.4% | 130 | 9.7% | 10.3% | -33 | -3.2pp |
| Parents and homebuilders (35 to 49) | 291 | 19.6% | 19.6% | 278 | 20.8% | 20.5% | +13 | -1.2pp |
| Older workers and pre-retirees (50 to 59) | 250 | 16.8% | 13.0% | 230 | 17.2% | 12.9% | +20 | -0.4pp |
| Empty nesters and retirees (60 to 69) | 258 | 17.3% | 13.6% | 208 | 15.6% | 13.2% | +50 | +1.7pp |
| Seniors (70 to 84) | 216 | 14.5% | 14.0% | 117 | 8.8% | 10.7% | +99 | +5.7pp |
| Elderly aged (85 and over) | 9 | 0.6% | 2.6% | 15 | 1.1% | 2.3% | -6 | -0.5pp |
| Total | 1,488 | 100.0% | 100.0% | 1,336 | 100.0% | 100.0% | +152 | 0.0pp |