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, Older workers and pre-retirees (50 to 59) was the most common category among residents in Mullaquana (part), accounting for 29% (79 people). This share was higher than Whyalla (C) (14.6%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which decreased by 60 people and 24.7 percentage points.
Section overview
Age structure - Service age groups
Mullaquana (part) - Total persons (Usual residence)
This table summarises service age groups for Mullaquana (part) in 2021 for persons, with comparison against Whyalla (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Mullaquana (part), with comparison markers for Whyalla (C).
Babies and pre-schoolers (0 to 4)
2021 count
0
% of total
0.0%
Change from 2016
0.0pp
0
0.0%
0.0pp
Primary schoolers (5 to 11)
2021 count
0
% of total
0.0%
Change from 2016
-12.1pp
0
0.0%
-12.1pp
Secondary schoolers (12 to 17)
2021 count
32
% of total
11.8%
Change from 2016
+1.7pp
32
11.8%
+1.7pp
Tertiary education and independence (18 to 24)
2021 count
20
% of total
7.4%
Change from 2016
+3.4pp
20
7.4%
+3.4pp
Young workforce (25 to 34)
2021 count
10
% of total
3.7%
Change from 2016
+1.3pp
10
3.7%
+1.3pp
Parents and homebuilders (35 to 49)
2021 count
15
% of total
5.5%
Change from 2016
-24.7pp
15
5.5%
-24.7pp
Older workers and pre-retirees (50 to 59)
2021 count
79
% of total
29.0%
Change from 2016
+7.2pp
79
29.0%
+7.2pp
Empty nesters and retirees (60 to 69)
2021 count
50
% of total
18.4%
Change from 2016
+6.3pp
50
18.4%
+6.3pp
Seniors (70 to 84)
2021 count
16
% of total
5.9%
Change from 2016
+2.3pp
16
5.9%
+2.3pp
Elderly aged (85 and over)
2021 count
3
% of total
1.1%
Change from 2016
+1.1pp
3
1.1%
+1.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
0
0.0pp
Primary schoolers (5 to 11)
-30
-12.1pp
Secondary schoolers (12 to 17)
+7
+1.7pp
Tertiary education and independence (18 to 24)
+10
+3.4pp
Young workforce (25 to 34)
+4
+1.3pp
Parents and homebuilders (35 to 49)
-60
-24.7pp
Older workers and pre-retirees (50 to 59)
+25
+7.2pp
Empty nesters and retirees (60 to 69)
+20
+6.3pp
Seniors (70 to 84)
+7
+2.3pp
Elderly aged (85 and over)
+3
+1.1pp
Data table
Service age groups for Mullaquana (part). 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) | 0 | 0.0% | 5.4% | 0 | 0.0% | 6.1% | 0 | 0.0pp |
| Primary schoolers (5 to 11) | 0 | 0.0% | 8.7% | 30 | 12.1% | 9.2% | -30 | -12.1pp |
| Secondary schoolers (12 to 17) | 32 | 11.8% | 7.5% | 25 | 10.1% | 7.9% | +7 | +1.7pp |
| Tertiary education and independence (18 to 24) | 20 | 7.4% | 7.7% | 10 | 4.0% | 8.0% | +10 | +3.4pp |
| Young workforce (25 to 34) | 10 | 3.7% | 12.7% | 6 | 2.4% | 12.7% | +4 | +1.3pp |
| Parents and homebuilders (35 to 49) | 15 | 5.5% | 17.7% | 75 | 30.2% | 19.1% | -60 | -24.7pp |
| Older workers and pre-retirees (50 to 59) | 79 | 29.0% | 14.6% | 54 | 21.8% | 14.4% | +25 | +7.2pp |
| Empty nesters and retirees (60 to 69) | 50 | 18.4% | 12.0% | 30 | 12.1% | 10.5% | +20 | +6.3pp |
| Seniors (70 to 84) | 16 | 5.9% | 11.5% | 9 | 3.6% | 10.0% | +7 | +2.3pp |
| Elderly aged (85 and over) | 3 | 1.1% | 2.1% | 0 | 0.0% | 2.0% | +3 | +1.1pp |
| Total | 272 | 100.0% | 100.0% | 248 | 100.0% | 100.0% | +24 | 0.0pp |