Population
Service age groups
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.
Related topics
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.
Key insight
In 2021, Established seniors (70 to 84) was the most common category among residents in Preston Beach, accounting for 30.2% (81 people). This share was higher than Waroona (S) (14.4%). Since 2016, the biggest change was in Established seniors (70 to 84), which increased by 53 people and 17.9 percentage points.
Section overview
Age structure - Service age groups
Preston Beach - Total persons (Usual residence)
This table summarises service age groups for Preston Beach in 2021 for persons, with comparison against Waroona (S) and change since 2016.
Chart view
Age structure - Service age groups snapshot
2021 distribution by category for Preston Beach, with comparison markers for Waroona (S).
Early childhood (0 to 4)
Primary school age (5 to 11)
Secondary school age (12 to 17)
Young adults (18 to 24)
Early career adults (25 to 34)
Mid-life adults (35 to 49)
Pre-retirement adults (50 to 59)
Retirement transition (60 to 69)
Established seniors (70 to 84)
Advanced age (85 years and over)
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Early childhood (0 to 4)
-3
-1.3pp
Primary school age (5 to 11)
-2
-1.1pp
Secondary school age (12 to 17)
+6
+1.9pp
Young adults (18 to 24)
+6
+2.2pp
Early career adults (25 to 34)
+7
+2.4pp
Mid-life adults (35 to 49)
+4
-0.5pp
Pre-retirement adults (50 to 59)
-4
-3.8pp
Retirement transition (60 to 69)
-10
-9.7pp
Established seniors (70 to 84)
+53
+17.9pp
Advanced age (85 years and over)
+5
+1.5pp
Data table
Service age groups for Preston Beach. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Waroona (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Waroona (S)% | Count | % | Waroona (S)% | Count | pp | |
| Early childhood (0 to 4) | 0 | 0.0% | 4.6% | 3 | 1.3% | 5.3% | -3 | -1.3pp |
| Primary school age (5 to 11) | 4 | 1.5% | 7.9% | 6 | 2.6% | 9.2% | -2 | -1.1pp |
| Secondary school age (12 to 17) | 10 | 3.7% | 7.4% | 4 | 1.8% | 7.9% | +6 | +1.9pp |
| Young adults (18 to 24) | 6 | 2.2% | 6.1% | 0 | 0.0% | 6.4% | +6 | +2.2pp |
| Early career adults (25 to 34) | 10 | 3.7% | 8.6% | 3 | 1.3% | 9.6% | +7 | +2.4pp |
| Mid-life adults (35 to 49) | 33 | 12.3% | 17.5% | 29 | 12.8% | 17.8% | +4 | -0.5pp |
| Pre-retirement adults (50 to 59) | 30 | 11.2% | 15.5% | 34 | 15.0% | 15.1% | -4 | -3.8pp |
| Retirement transition (60 to 69) | 78 | 29.1% | 14.9% | 88 | 38.8% | 14.5% | -10 | -9.7pp |
| Established seniors (70 to 84) | 81 | 30.2% | 14.4% | 28 | 12.3% | 11.3% | +53 | +17.9pp |
| Advanced age (85 years and over) | 11 | 4.1% | 2.5% | 6 | 2.6% | 2.3% | +5 | +1.5pp |
| Total | 268 | 100.0% | 100.0% | 227 | 100.0% | 100.0% | +41 | 0.0pp |