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 Gingin, accounting for 19.2% (173 people). This share was higher than Gingin (S) (16.6%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 50 people and 5 percentage points.
Section overview
Age structure - Service age groups
Gingin - Total persons (Usual residence)
This table summarises service age groups for Gingin in 2021 for persons, with comparison against Gingin (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Gingin, with comparison markers for Gingin (S).
Babies and pre-schoolers (0 to 4)
2021 count
67
% of total
7.4%
Change from 2016
+0.1pp
67
7.4%
+0.1pp
Primary schoolers (5 to 11)
2021 count
108
% of total
12.0%
Change from 2016
+0.4pp
108
12.0%
+0.4pp
Secondary schoolers (12 to 17)
2021 count
66
% of total
7.3%
Change from 2016
+1.2pp
66
7.3%
+1.2pp
Tertiary education and independence (18 to 24)
2021 count
38
% of total
4.2%
Change from 2016
-0.4pp
38
4.2%
-0.4pp
Young workforce (25 to 34)
2021 count
88
% of total
9.8%
Change from 2016
-2.5pp
88
9.8%
-2.5pp
Parents and homebuilders (35 to 49)
2021 count
173
% of total
19.2%
Change from 2016
+0.9pp
173
19.2%
+0.9pp
Older workers and pre-retirees (50 to 59)
2021 count
104
% of total
11.5%
Change from 2016
-1.4pp
104
11.5%
-1.4pp
Empty nesters and retirees (60 to 69)
2021 count
113
% of total
12.5%
Change from 2016
+0.6pp
113
12.5%
+0.6pp
Seniors (70 to 84)
2021 count
123
% of total
13.6%
Change from 2016
+5.0pp
123
13.6%
+5.0pp
Elderly aged (85 and over)
2021 count
16
% of total
1.8%
Change from 2016
-0.3pp
16
1.8%
-0.3pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+5
+0.1pp
Primary schoolers (5 to 11)
+9
+0.4pp
Secondary schoolers (12 to 17)
+14
+1.2pp
Tertiary education and independence (18 to 24)
-1
-0.4pp
Young workforce (25 to 34)
-17
-2.5pp
Parents and homebuilders (35 to 49)
+17
+0.9pp
Older workers and pre-retirees (50 to 59)
-6
-1.4pp
Empty nesters and retirees (60 to 69)
+12
+0.6pp
Seniors (70 to 84)
+50
+5.0pp
Elderly aged (85 and over)
-2
-0.3pp
Data table
Service age groups for Gingin. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Gingin (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Gingin (S)% | Count | % | Gingin (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 67 | 7.4% | 4.4% | 62 | 7.3% | 4.8% | +5 | +0.1pp |
| Primary schoolers (5 to 11) | 108 | 12.0% | 6.6% | 99 | 11.6% | 8.5% | +9 | +0.4pp |
| Secondary schoolers (12 to 17) | 66 | 7.3% | 6.4% | 52 | 6.1% | 6.5% | +14 | +1.2pp |
| Tertiary education and independence (18 to 24) | 38 | 4.2% | 5.1% | 39 | 4.6% | 5.4% | -1 | -0.4pp |
| Young workforce (25 to 34) | 88 | 9.8% | 10.1% | 105 | 12.3% | 9.6% | -17 | -2.5pp |
| Parents and homebuilders (35 to 49) | 173 | 19.2% | 16.6% | 156 | 18.3% | 17.8% | +17 | +0.9pp |
| Older workers and pre-retirees (50 to 59) | 104 | 11.5% | 16.3% | 110 | 12.9% | 15.0% | -6 | -1.4pp |
| Empty nesters and retirees (60 to 69) | 113 | 12.5% | 16.6% | 101 | 11.9% | 18.3% | +12 | +0.6pp |
| Seniors (70 to 84) | 123 | 13.6% | 16.0% | 73 | 8.6% | 12.4% | +50 | +5.0pp |
| Elderly aged (85 and over) | 16 | 1.8% | 1.6% | 18 | 2.1% | 1.3% | -2 | -0.3pp |
| Total | 902 | 100.0% | 100.0% | 852 | 100.0% | 100.0% | +50 | 0.0pp |