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 Lake Grace (S), accounting for 22.4% (283 people). This share was higher than Regional WA (19.9%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 37 people and 2.8 percentage points.
Section overview
Age structure - Service age groups
Lake Grace (S) - Total persons (Usual residence)
This table summarises service age groups for Lake Grace (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Lake Grace (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
106
% of total
8.4%
Change from 2016
+1.1pp
106
8.4%
+1.1pp
Primary schoolers (5 to 11)
2021 count
122
% of total
9.6%
Change from 2016
-2.8pp
122
9.6%
-2.8pp
Secondary schoolers (12 to 17)
2021 count
54
% of total
4.3%
Change from 2016
+0.5pp
54
4.3%
+0.5pp
Tertiary education and independence (18 to 24)
2021 count
95
% of total
7.5%
Change from 2016
+2.7pp
95
7.5%
+2.7pp
Young workforce (25 to 34)
2021 count
140
% of total
11.1%
Change from 2016
-1.8pp
140
11.1%
-1.8pp
Parents and homebuilders (35 to 49)
2021 count
283
% of total
22.4%
Change from 2016
+1.5pp
283
22.4%
+1.5pp
Older workers and pre-retirees (50 to 59)
2021 count
174
% of total
13.8%
Change from 2016
-2.8pp
174
13.8%
-2.8pp
Empty nesters and retirees (60 to 69)
2021 count
179
% of total
14.2%
Change from 2016
+1.9pp
179
14.2%
+1.9pp
Seniors (70 to 84)
2021 count
123
% of total
9.7%
Change from 2016
+2.3pp
123
9.7%
+2.3pp
Elderly aged (85 and over)
2021 count
11
% of total
0.9%
Change from 2016
-0.4pp
11
0.9%
-0.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+14
+1.1pp
Primary schoolers (5 to 11)
-35
-2.8pp
Secondary schoolers (12 to 17)
+6
+0.5pp
Tertiary education and independence (18 to 24)
+34
+2.7pp
Young workforce (25 to 34)
-23
-1.8pp
Parents and homebuilders (35 to 49)
+18
+1.5pp
Older workers and pre-retirees (50 to 59)
-37
-2.8pp
Empty nesters and retirees (60 to 69)
+23
+1.9pp
Seniors (70 to 84)
+29
+2.3pp
Elderly aged (85 and over)
-6
-0.4pp
Data table
Service age groups for Lake Grace (S). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 106 | 8.4% | 6.0% | 92 | 7.3% | 6.6% | +14 | +1.1pp |
| Primary schoolers (5 to 11) | 122 | 9.6% | 9.5% | 157 | 12.4% | 9.8% | -35 | -2.8pp |
| Secondary schoolers (12 to 17) | 54 | 4.3% | 7.6% | 48 | 3.8% | 7.4% | +6 | +0.5pp |
| Tertiary education and independence (18 to 24) | 95 | 7.5% | 6.7% | 61 | 4.8% | 7.0% | +34 | +2.7pp |
| Young workforce (25 to 34) | 140 | 11.1% | 12.5% | 163 | 12.9% | 13.6% | -23 | -1.8pp |
| Parents and homebuilders (35 to 49) | 283 | 22.4% | 19.9% | 265 | 20.9% | 20.8% | +18 | +1.5pp |
| Older workers and pre-retirees (50 to 59) | 174 | 13.8% | 13.7% | 211 | 16.6% | 14.1% | -37 | -2.8pp |
| Empty nesters and retirees (60 to 69) | 179 | 14.2% | 12.4% | 156 | 12.3% | 11.3% | +23 | +1.9pp |
| Seniors (70 to 84) | 123 | 9.7% | 10.1% | 94 | 7.4% | 7.8% | +29 | +2.3pp |
| Elderly aged (85 and over) | 11 | 0.9% | 1.7% | 17 | 1.3% | 1.5% | -6 | -0.4pp |
| Total | 1,265 | 100.0% | 100.0% | 1,268 | 100.0% | 100.0% | -3 | 0.0pp |