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, Seniors (70 to 84) was the most common category among residents in Unley Park, accounting for 16.1% (222 people). This share was higher than Unley (C) (12.2%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 73 people and 5.8 percentage points.
Section overview
Age structure - Service age groups
Unley Park - Total persons (Usual residence)
This table summarises service age groups for Unley Park in 2021 for persons, with comparison against Unley (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Unley Park, with comparison markers for Unley (C).
Babies and pre-schoolers (0 to 4)
2021 count
47
% of total
3.4%
Change from 2016
-0.4pp
47
3.4%
-0.4pp
Primary schoolers (5 to 11)
2021 count
101
% of total
7.3%
Change from 2016
-2.6pp
101
7.3%
-2.6pp
Secondary schoolers (12 to 17)
2021 count
115
% of total
8.3%
Change from 2016
-1.1pp
115
8.3%
-1.1pp
Tertiary education and independence (18 to 24)
2021 count
127
% of total
9.2%
Change from 2016
-0.4pp
127
9.2%
-0.4pp
Young workforce (25 to 34)
2021 count
116
% of total
8.4%
Change from 2016
-1.0pp
116
8.4%
-1.0pp
Parents and homebuilders (35 to 49)
2021 count
214
% of total
15.5%
Change from 2016
-1.7pp
214
15.5%
-1.7pp
Older workers and pre-retirees (50 to 59)
2021 count
221
% of total
16.0%
Change from 2016
+0.6pp
221
16.0%
+0.6pp
Empty nesters and retirees (60 to 69)
2021 count
200
% of total
14.5%
Change from 2016
-0.4pp
200
14.5%
-0.4pp
Seniors (70 to 84)
2021 count
222
% of total
16.1%
Change from 2016
+5.8pp
222
16.1%
+5.8pp
Elderly aged (85 and over)
2021 count
36
% of total
2.6%
Change from 2016
+0.8pp
36
2.6%
+0.8pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-8
-0.4pp
Primary schoolers (5 to 11)
-42
-2.6pp
Secondary schoolers (12 to 17)
-21
-1.1pp
Tertiary education and independence (18 to 24)
-12
-0.4pp
Young workforce (25 to 34)
-20
-1.0pp
Parents and homebuilders (35 to 49)
-34
-1.7pp
Older workers and pre-retirees (50 to 59)
-1
+0.6pp
Empty nesters and retirees (60 to 69)
-16
-0.4pp
Seniors (70 to 84)
+73
+5.8pp
Elderly aged (85 and over)
+10
+0.8pp
Data table
Service age groups for Unley Park. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Unley (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Unley (C)% | Count | % | Unley (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 47 | 3.4% | 4.3% | 55 | 3.8% | 4.7% | -8 | -0.4pp |
| Primary schoolers (5 to 11) | 101 | 7.3% | 7.6% | 143 | 9.9% | 7.9% | -42 | -2.6pp |
| Secondary schoolers (12 to 17) | 115 | 8.3% | 6.9% | 136 | 9.4% | 6.6% | -21 | -1.1pp |
| Tertiary education and independence (18 to 24) | 127 | 9.2% | 8.2% | 139 | 9.6% | 9.4% | -12 | -0.4pp |
| Young workforce (25 to 34) | 116 | 8.4% | 12.4% | 136 | 9.4% | 13.5% | -20 | -1.0pp |
| Parents and homebuilders (35 to 49) | 214 | 15.5% | 19.6% | 248 | 17.2% | 19.8% | -34 | -1.7pp |
| Older workers and pre-retirees (50 to 59) | 221 | 16.0% | 12.6% | 222 | 15.4% | 12.7% | -1 | +0.6pp |
| Empty nesters and retirees (60 to 69) | 200 | 14.5% | 11.9% | 216 | 14.9% | 11.9% | -16 | -0.4pp |
| Seniors (70 to 84) | 222 | 16.1% | 12.2% | 149 | 10.3% | 9.2% | +73 | +5.8pp |
| Elderly aged (85 and over) | 36 | 2.6% | 4.1% | 26 | 1.8% | 4.3% | +10 | +0.8pp |
| Total | 1,383 | 100.0% | 100.0% | 1,445 | 100.0% | 100.0% | -62 | 0.0pp |