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, Empty nesters and retirees (60 to 69) was the most common category among residents in Karakin, accounting for 28.9% (69 people). This share was higher than Gingin (S) (16.6%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 43 people and 18.1 percentage points.
Section overview
Age structure - Service age groups
Karakin - Total persons (Usual residence)
This table summarises service age groups for Karakin in 2021 for persons, with comparison against Gingin (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Karakin, with comparison markers for Gingin (S).
Babies and pre-schoolers (0 to 4)
2021 count
0
% of total
0.0%
Change from 2016
-1.2pp
0
0.0%
-1.2pp
Primary schoolers (5 to 11)
2021 count
10
% of total
4.2%
Change from 2016
-1.6pp
10
4.2%
-1.6pp
Secondary schoolers (12 to 17)
2021 count
19
% of total
7.9%
Change from 2016
+0.4pp
19
7.9%
+0.4pp
Tertiary education and independence (18 to 24)
2021 count
7
% of total
2.9%
Change from 2016
-2.5pp
7
2.9%
-2.5pp
Young workforce (25 to 34)
2021 count
4
% of total
1.7%
Change from 2016
+1.7pp
4
1.7%
+1.7pp
Parents and homebuilders (35 to 49)
2021 count
21
% of total
8.8%
Change from 2016
-10.7pp
21
8.8%
-10.7pp
Older workers and pre-retirees (50 to 59)
2021 count
28
% of total
11.7%
Change from 2016
-7.4pp
28
11.7%
-7.4pp
Empty nesters and retirees (60 to 69)
2021 count
69
% of total
28.9%
Change from 2016
-0.6pp
69
28.9%
-0.6pp
Seniors (70 to 84)
2021 count
59
% of total
24.7%
Change from 2016
+18.1pp
59
24.7%
+18.1pp
Elderly aged (85 and over)
2021 count
3
% of total
1.3%
Change from 2016
+0.1pp
3
1.3%
+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)
-3
-1.2pp
Primary schoolers (5 to 11)
-4
-1.6pp
Secondary schoolers (12 to 17)
+1
+0.4pp
Tertiary education and independence (18 to 24)
-6
-2.5pp
Young workforce (25 to 34)
+4
+1.7pp
Parents and homebuilders (35 to 49)
-26
-10.7pp
Older workers and pre-retirees (50 to 59)
-18
-7.4pp
Empty nesters and retirees (60 to 69)
-2
-0.6pp
Seniors (70 to 84)
+43
+18.1pp
Elderly aged (85 and over)
0
+0.1pp
Data table
Service age groups for Karakin. 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) | 0 | 0.0% | 4.4% | 3 | 1.2% | 4.8% | -3 | -1.2pp |
| Primary schoolers (5 to 11) | 10 | 4.2% | 6.6% | 14 | 5.8% | 8.5% | -4 | -1.6pp |
| Secondary schoolers (12 to 17) | 19 | 7.9% | 6.4% | 18 | 7.5% | 6.5% | +1 | +0.4pp |
| Tertiary education and independence (18 to 24) | 7 | 2.9% | 5.1% | 13 | 5.4% | 5.4% | -6 | -2.5pp |
| Young workforce (25 to 34) | 4 | 1.7% | 10.1% | 0 | 0.0% | 9.6% | +4 | +1.7pp |
| Parents and homebuilders (35 to 49) | 21 | 8.8% | 16.6% | 47 | 19.5% | 17.8% | -26 | -10.7pp |
| Older workers and pre-retirees (50 to 59) | 28 | 11.7% | 16.3% | 46 | 19.1% | 15.0% | -18 | -7.4pp |
| Empty nesters and retirees (60 to 69) | 69 | 28.9% | 16.6% | 71 | 29.5% | 18.3% | -2 | -0.6pp |
| Seniors (70 to 84) | 59 | 24.7% | 16.0% | 16 | 6.6% | 12.4% | +43 | +18.1pp |
| Elderly aged (85 and over) | 3 | 1.3% | 1.6% | 3 | 1.2% | 1.3% | 0 | +0.1pp |
| Total | 239 | 100.0% | 100.0% | 241 | 100.0% | 100.0% | -2 | 0.0pp |