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 Sturt (SA), accounting for 19.4% (540 people). This share was lower than Marion (C) (20.2%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 540 people and 19.4 percentage points.
Section overview
Age structure - Service age groups
Sturt (SA) - Total persons (Usual residence)
This table summarises service age groups for Sturt (SA) in 2021 for persons, with comparison against Marion (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Sturt (SA), with comparison markers for Marion (C).
Babies and pre-schoolers (0 to 4)
2021 count
156
% of total
5.6%
Change from 2016
+5.6pp
156
5.6%
+5.6pp
Primary schoolers (5 to 11)
2021 count
204
% of total
7.3%
Change from 2016
+7.3pp
204
7.3%
+7.3pp
Secondary schoolers (12 to 17)
2021 count
130
% of total
4.7%
Change from 2016
+4.7pp
130
4.7%
+4.7pp
Tertiary education and independence (18 to 24)
2021 count
268
% of total
9.6%
Change from 2016
+9.6pp
268
9.6%
+9.6pp
Young workforce (25 to 34)
2021 count
488
% of total
17.5%
Change from 2016
+17.5pp
488
17.5%
+17.5pp
Parents and homebuilders (35 to 49)
2021 count
540
% of total
19.4%
Change from 2016
+19.4pp
540
19.4%
+19.4pp
Older workers and pre-retirees (50 to 59)
2021 count
297
% of total
10.7%
Change from 2016
-17.9pp
297
10.7%
-17.9pp
Empty nesters and retirees (60 to 69)
2021 count
319
% of total
11.4%
Change from 2016
+11.4pp
319
11.4%
+11.4pp
Seniors (70 to 84)
2021 count
337
% of total
12.1%
Change from 2016
+12.1pp
337
12.1%
+12.1pp
Elderly aged (85 and over)
2021 count
76
% of total
2.7%
Change from 2016
+2.7pp
76
2.7%
+2.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+156
+5.6pp
Primary schoolers (5 to 11)
+204
+7.3pp
Secondary schoolers (12 to 17)
+130
+4.7pp
Tertiary education and independence (18 to 24)
+268
+9.6pp
Young workforce (25 to 34)
+488
+17.5pp
Parents and homebuilders (35 to 49)
+540
+19.4pp
Older workers and pre-retirees (50 to 59)
+291
-17.9pp
Empty nesters and retirees (60 to 69)
+319
+11.4pp
Seniors (70 to 84)
+337
+12.1pp
Elderly aged (85 and over)
+76
+2.7pp
Data table
Service age groups for Sturt (SA). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Marion (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Marion (C)% | Count | % | Marion (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 156 | 5.6% | 5.4% | 0 | 0.0% | 5.9% | +156 | +5.6pp |
| Primary schoolers (5 to 11) | 204 | 7.3% | 7.7% | 0 | 0.0% | 7.4% | +204 | +7.3pp |
| Secondary schoolers (12 to 17) | 130 | 4.7% | 6.1% | 0 | 0.0% | 6.1% | +130 | +4.7pp |
| Tertiary education and independence (18 to 24) | 268 | 9.6% | 8.8% | 0 | 0.0% | 9.6% | +268 | +9.6pp |
| Young workforce (25 to 34) | 488 | 17.5% | 15.1% | 0 | 0.0% | 14.8% | +488 | +17.5pp |
| Parents and homebuilders (35 to 49) | 540 | 19.4% | 20.2% | 0 | 0.0% | 19.5% | +540 | +19.4pp |
| Older workers and pre-retirees (50 to 59) | 297 | 10.7% | 11.7% | 6 | 28.6% | 13.0% | +291 | -17.9pp |
| Empty nesters and retirees (60 to 69) | 319 | 11.4% | 11.8% | 0 | 0.0% | 11.4% | +319 | +11.4pp |
| Seniors (70 to 84) | 337 | 12.1% | 10.4% | 0 | 0.0% | 9.1% | +337 | +12.1pp |
| Elderly aged (85 and over) | 76 | 2.7% | 2.9% | 0 | 0.0% | 3.1% | +76 | +2.7pp |
| Total | 2,787 | 100.0% | 100.0% | 21 | 100.0% | 100.0% | +2,766 | 0.0pp |