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 Sandhurst, accounting for 24.9% (1,299 people). This share was higher than Frankston (C) (21%). Since 2016, the biggest change was in Young workforce (25 to 34), which decreased by 227 people and 5 percentage points.
Section overview
Age structure - Service age groups
Sandhurst - Total persons (Usual residence)
This table summarises service age groups for Sandhurst in 2021 for persons, with comparison against Frankston (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Sandhurst, with comparison markers for Frankston (C).
Babies and pre-schoolers (0 to 4)
2021 count
311
% of total
6.0%
Change from 2016
-2.4pp
311
6.0%
-2.4pp
Primary schoolers (5 to 11)
2021 count
567
% of total
10.9%
Change from 2016
+0.9pp
567
10.9%
+0.9pp
Secondary schoolers (12 to 17)
2021 count
425
% of total
8.2%
Change from 2016
+0.7pp
425
8.2%
+0.7pp
Tertiary education and independence (18 to 24)
2021 count
366
% of total
7.0%
Change from 2016
+0.2pp
366
7.0%
+0.2pp
Young workforce (25 to 34)
2021 count
424
% of total
8.1%
Change from 2016
-5.0pp
424
8.1%
-5.0pp
Parents and homebuilders (35 to 49)
2021 count
1,299
% of total
24.9%
Change from 2016
-0.1pp
1,299
24.9%
-0.1pp
Older workers and pre-retirees (50 to 59)
2021 count
748
% of total
14.4%
Change from 2016
+0.9pp
748
14.4%
+0.9pp
Empty nesters and retirees (60 to 69)
2021 count
644
% of total
12.4%
Change from 2016
+1.2pp
644
12.4%
+1.2pp
Seniors (70 to 84)
2021 count
394
% of total
7.6%
Change from 2016
+3.6pp
394
7.6%
+3.6pp
Elderly aged (85 and over)
2021 count
22
% of total
0.4%
Change from 2016
+0.3pp
22
0.4%
+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)
-108
-2.4pp
Primary schoolers (5 to 11)
+67
+0.9pp
Secondary schoolers (12 to 17)
+53
+0.7pp
Tertiary education and independence (18 to 24)
+27
+0.2pp
Young workforce (25 to 34)
-227
-5.0pp
Parents and homebuilders (35 to 49)
+56
-0.1pp
Older workers and pre-retirees (50 to 59)
+76
+0.9pp
Empty nesters and retirees (60 to 69)
+84
+1.2pp
Seniors (70 to 84)
+194
+3.6pp
Elderly aged (85 and over)
+15
+0.3pp
Data table
Service age groups for Sandhurst. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Frankston (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Frankston (C)% | Count | % | Frankston (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 311 | 6.0% | 6.2% | 419 | 8.4% | 6.7% | -108 | -2.4pp |
| Primary schoolers (5 to 11) | 567 | 10.9% | 8.7% | 500 | 10.0% | 8.6% | +67 | +0.9pp |
| Secondary schoolers (12 to 17) | 425 | 8.2% | 7.1% | 372 | 7.5% | 6.9% | +53 | +0.7pp |
| Tertiary education and independence (18 to 24) | 366 | 7.0% | 7.7% | 339 | 6.8% | 8.7% | +27 | +0.2pp |
| Young workforce (25 to 34) | 424 | 8.1% | 13.7% | 651 | 13.1% | 13.8% | -227 | -5.0pp |
| Parents and homebuilders (35 to 49) | 1,299 | 24.9% | 21.0% | 1,243 | 25.0% | 21.1% | +56 | -0.1pp |
| Older workers and pre-retirees (50 to 59) | 748 | 14.4% | 13.0% | 672 | 13.5% | 13.3% | +76 | +0.9pp |
| Empty nesters and retirees (60 to 69) | 644 | 12.4% | 10.8% | 560 | 11.2% | 10.5% | +84 | +1.2pp |
| Seniors (70 to 84) | 394 | 7.6% | 9.6% | 200 | 4.0% | 8.4% | +194 | +3.6pp |
| Elderly aged (85 and over) | 22 | 0.4% | 2.2% | 7 | 0.1% | 2.0% | +15 | +0.3pp |
| Total | 5,211 | 100.0% | 100.0% | 4,981 | 100.0% | 100.0% | +230 | 0.0pp |