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 Boyup Brook, accounting for 17.6% (165 people). This share was higher than Boyup Brook (S) (14.8%). Since 2016, the biggest change was in Tertiary education and independence (18 to 24), which increased by 23 people and 2.3 percentage points.
Section overview
Age structure - Service age groups
Boyup Brook - Total persons (Usual residence)
This table summarises service age groups for Boyup Brook in 2021 for persons, with comparison against Boyup Brook (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Boyup Brook, with comparison markers for Boyup Brook (S).
Babies and pre-schoolers (0 to 4)
2021 count
45
% of total
4.8%
Change from 2016
-0.8pp
45
4.8%
-0.8pp
Primary schoolers (5 to 11)
2021 count
87
% of total
9.3%
Change from 2016
+1.0pp
87
9.3%
+1.0pp
Secondary schoolers (12 to 17)
2021 count
58
% of total
6.2%
Change from 2016
-0.6pp
58
6.2%
-0.6pp
Tertiary education and independence (18 to 24)
2021 count
52
% of total
5.5%
Change from 2016
+2.3pp
52
5.5%
+2.3pp
Young workforce (25 to 34)
2021 count
68
% of total
7.2%
Change from 2016
+1.9pp
68
7.2%
+1.9pp
Parents and homebuilders (35 to 49)
2021 count
157
% of total
16.7%
Change from 2016
-0.3pp
157
16.7%
-0.3pp
Older workers and pre-retirees (50 to 59)
2021 count
148
% of total
15.8%
Change from 2016
-0.4pp
148
15.8%
-0.4pp
Empty nesters and retirees (60 to 69)
2021 count
165
% of total
17.6%
Change from 2016
+1.7pp
165
17.6%
+1.7pp
Seniors (70 to 84)
2021 count
155
% of total
16.5%
Change from 2016
+1.9pp
155
16.5%
+1.9pp
Elderly aged (85 and over)
2021 count
32
% of total
3.4%
Change from 2016
+0.1pp
32
3.4%
+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)
-6
-0.8pp
Primary schoolers (5 to 11)
+11
+1.0pp
Secondary schoolers (12 to 17)
-4
-0.6pp
Tertiary education and independence (18 to 24)
+23
+2.3pp
Young workforce (25 to 34)
+20
+1.9pp
Parents and homebuilders (35 to 49)
+2
-0.3pp
Older workers and pre-retirees (50 to 59)
0
-0.4pp
Empty nesters and retirees (60 to 69)
+20
+1.7pp
Seniors (70 to 84)
+22
+1.9pp
Elderly aged (85 and over)
+2
+0.1pp
Data table
Service age groups for Boyup Brook. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Boyup Brook (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Boyup Brook (S)% | Count | % | Boyup Brook (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 45 | 4.8% | 5.7% | 51 | 5.6% | 5.7% | -6 | -0.8pp |
| Primary schoolers (5 to 11) | 87 | 9.3% | 9.4% | 76 | 8.3% | 9.5% | +11 | +1.0pp |
| Secondary schoolers (12 to 17) | 58 | 6.2% | 6.2% | 62 | 6.8% | 5.6% | -4 | -0.6pp |
| Tertiary education and independence (18 to 24) | 52 | 5.5% | 5.3% | 29 | 3.2% | 3.3% | +23 | +2.3pp |
| Young workforce (25 to 34) | 68 | 7.2% | 6.9% | 48 | 5.3% | 7.5% | +20 | +1.9pp |
| Parents and homebuilders (35 to 49) | 157 | 16.7% | 18.5% | 155 | 17.0% | 19.6% | +2 | -0.3pp |
| Older workers and pre-retirees (50 to 59) | 148 | 15.8% | 15.4% | 148 | 16.2% | 16.0% | 0 | -0.4pp |
| Empty nesters and retirees (60 to 69) | 165 | 17.6% | 14.8% | 145 | 15.9% | 15.6% | +20 | +1.7pp |
| Seniors (70 to 84) | 155 | 16.5% | 14.3% | 133 | 14.6% | 13.4% | +22 | +1.9pp |
| Elderly aged (85 and over) | 32 | 3.4% | 2.2% | 30 | 3.3% | 2.4% | +2 | +0.1pp |
| Total | 938 | 100.0% | 100.0% | 911 | 100.0% | 100.0% | +27 | 0.0pp |