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 Norrie, accounting for 17.8% (1,121 people). This share was similar to Whyalla (C) (17.7%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 555 people, while its share fell by 2.7 percentage points.
Section overview
Age structure - Service age groups
Whyalla Norrie - Total persons (Usual residence)
This table summarises service age groups for Whyalla Norrie 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 Norrie, with comparison markers for Whyalla (C).
Babies and pre-schoolers (0 to 4)
2021 count
356
% of total
5.7%
Change from 2016
-1.1pp
356
5.7%
-1.1pp
Primary schoolers (5 to 11)
2021 count
612
% of total
9.7%
Change from 2016
-0.2pp
612
9.7%
-0.2pp
Secondary schoolers (12 to 17)
2021 count
468
% of total
7.4%
Change from 2016
-0.5pp
468
7.4%
-0.5pp
Tertiary education and independence (18 to 24)
2021 count
523
% of total
8.3%
Change from 2016
+0.1pp
523
8.3%
+0.1pp
Young workforce (25 to 34)
2021 count
819
% of total
13.0%
Change from 2016
+2.9pp
819
13.0%
+2.9pp
Parents and homebuilders (35 to 49)
2021 count
1,121
% of total
17.8%
Change from 2016
-2.7pp
1,121
17.8%
-2.7pp
Older workers and pre-retirees (50 to 59)
2021 count
907
% of total
14.4%
Change from 2016
+0.1pp
907
14.4%
+0.1pp
Empty nesters and retirees (60 to 69)
2021 count
675
% of total
10.7%
Change from 2016
-0.9pp
675
10.7%
-0.9pp
Seniors (70 to 84)
2021 count
710
% of total
11.3%
Change from 2016
+4.4pp
710
11.3%
+4.4pp
Elderly aged (85 and over)
2021 count
113
% of total
1.8%
Change from 2016
-0.2pp
113
1.8%
-0.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+170
-1.1pp
Primary schoolers (5 to 11)
+340
-0.2pp
Secondary schoolers (12 to 17)
+250
-0.5pp
Tertiary education and independence (18 to 24)
+297
+0.1pp
Young workforce (25 to 34)
+541
+2.9pp
Parents and homebuilders (35 to 49)
+555
-2.7pp
Older workers and pre-retirees (50 to 59)
+512
+0.1pp
Empty nesters and retirees (60 to 69)
+356
-0.9pp
Seniors (70 to 84)
+520
+4.4pp
Elderly aged (85 and over)
+59
-0.2pp
Data table
Service age groups for Whyalla Norrie. 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) | 356 | 5.7% | 5.4% | 186 | 6.8% | 6.1% | +170 | -1.1pp |
| Primary schoolers (5 to 11) | 612 | 9.7% | 8.7% | 272 | 9.9% | 9.2% | +340 | -0.2pp |
| Secondary schoolers (12 to 17) | 468 | 7.4% | 7.5% | 218 | 7.9% | 7.9% | +250 | -0.5pp |
| Tertiary education and independence (18 to 24) | 523 | 8.3% | 7.7% | 226 | 8.2% | 8.0% | +297 | +0.1pp |
| Young workforce (25 to 34) | 819 | 13.0% | 12.7% | 278 | 10.1% | 12.7% | +541 | +2.9pp |
| Parents and homebuilders (35 to 49) | 1,121 | 17.8% | 17.7% | 566 | 20.5% | 19.1% | +555 | -2.7pp |
| Older workers and pre-retirees (50 to 59) | 907 | 14.4% | 14.6% | 395 | 14.3% | 14.4% | +512 | +0.1pp |
| Empty nesters and retirees (60 to 69) | 675 | 10.7% | 12.0% | 319 | 11.6% | 10.5% | +356 | -0.9pp |
| Seniors (70 to 84) | 710 | 11.3% | 11.5% | 190 | 6.9% | 10.0% | +520 | +4.4pp |
| Elderly aged (85 and over) | 113 | 1.8% | 2.1% | 54 | 2.0% | 2.0% | +59 | -0.2pp |
| Total | 6,288 | 100.0% | 100.0% | 2,755 | 100.0% | 100.0% | +3,533 | 0.0pp |