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 Whyalla Stuart, accounting for 16.1% (1,043 people). This share was lower than Whyalla (C) (17.7%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which decreased by 140 people and 1.4 percentage points.
Section overview
Age structure - Service age groups
Whyalla Stuart - Total persons (Usual residence)
This table summarises service age groups for Whyalla Stuart in 2021 for persons, with comparison against Whyalla (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Whyalla Stuart, with comparison markers for Whyalla (C).
Babies and pre-schoolers (0 to 4)
2021 count
352
% of total
5.4%
Change from 2016
-1.2pp
352
5.4%
-1.2pp
Primary schoolers (5 to 11)
2021 count
581
% of total
9.0%
Change from 2016
-0.4pp
581
9.0%
-0.4pp
Secondary schoolers (12 to 17)
2021 count
485
% of total
7.5%
Change from 2016
+0.2pp
485
7.5%
+0.2pp
Tertiary education and independence (18 to 24)
2021 count
522
% of total
8.1%
Change from 2016
+0.1pp
522
8.1%
+0.1pp
Young workforce (25 to 34)
2021 count
833
% of total
12.9%
Change from 2016
0.0pp
833
12.9%
0.0pp
Parents and homebuilders (35 to 49)
2021 count
1,043
% of total
16.1%
Change from 2016
-1.4pp
1,043
16.1%
-1.4pp
Older workers and pre-retirees (50 to 59)
2021 count
916
% of total
14.1%
Change from 2016
-0.2pp
916
14.1%
-0.2pp
Empty nesters and retirees (60 to 69)
2021 count
805
% of total
12.4%
Change from 2016
+1.2pp
805
12.4%
+1.2pp
Seniors (70 to 84)
2021 count
816
% of total
12.6%
Change from 2016
+1.9pp
816
12.6%
+1.9pp
Elderly aged (85 and over)
2021 count
132
% of total
2.0%
Change from 2016
+0.3pp
132
2.0%
+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)
-94
-1.2pp
Primary schoolers (5 to 11)
-51
-0.4pp
Secondary schoolers (12 to 17)
-10
+0.2pp
Tertiary education and independence (18 to 24)
-16
+0.1pp
Young workforce (25 to 34)
-38
0.0pp
Parents and homebuilders (35 to 49)
-140
-1.4pp
Older workers and pre-retirees (50 to 59)
-50
-0.2pp
Empty nesters and retirees (60 to 69)
+46
+1.2pp
Seniors (70 to 84)
+95
+1.9pp
Elderly aged (85 and over)
+18
+0.3pp
Data table
Service age groups for Whyalla Stuart. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Whyalla (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Whyalla (C)% | Count | % | Whyalla (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 352 | 5.4% | 5.4% | 446 | 6.6% | 6.1% | -94 | -1.2pp |
| Primary schoolers (5 to 11) | 581 | 9.0% | 8.7% | 632 | 9.4% | 9.2% | -51 | -0.4pp |
| Secondary schoolers (12 to 17) | 485 | 7.5% | 7.5% | 495 | 7.3% | 7.9% | -10 | +0.2pp |
| Tertiary education and independence (18 to 24) | 522 | 8.1% | 7.7% | 538 | 8.0% | 8.0% | -16 | +0.1pp |
| Young workforce (25 to 34) | 833 | 12.9% | 12.7% | 871 | 12.9% | 12.7% | -38 | 0.0pp |
| Parents and homebuilders (35 to 49) | 1,043 | 16.1% | 17.7% | 1,183 | 17.5% | 19.1% | -140 | -1.4pp |
| Older workers and pre-retirees (50 to 59) | 916 | 14.1% | 14.6% | 966 | 14.3% | 14.4% | -50 | -0.2pp |
| Empty nesters and retirees (60 to 69) | 805 | 12.4% | 12.0% | 759 | 11.2% | 10.5% | +46 | +1.2pp |
| Seniors (70 to 84) | 816 | 12.6% | 11.5% | 721 | 10.7% | 10.0% | +95 | +1.9pp |
| Elderly aged (85 and over) | 132 | 2.0% | 2.1% | 114 | 1.7% | 2.0% | +18 | +0.3pp |
| Total | 6,476 | 100.0% | 100.0% | 6,748 | 100.0% | 100.0% | -272 | 0.0pp |