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 Truro (part), accounting for 18.9% (99 people). This share was higher than Mid Murray (DC) (14.9%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which decreased by 36 people and 5.7 percentage points.
Section overview
Age structure - Service age groups
Truro (part) - Total persons (Usual residence)
This table summarises service age groups for Truro (part) in 2021 for persons, with comparison against Mid Murray (DC) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Truro (part), with comparison markers for Mid Murray (DC).
Babies and pre-schoolers (0 to 4)
2021 count
28
% of total
5.4%
Change from 2016
+0.1pp
28
5.4%
+0.1pp
Primary schoolers (5 to 11)
2021 count
47
% of total
9.0%
Change from 2016
+1.2pp
47
9.0%
+1.2pp
Secondary schoolers (12 to 17)
2021 count
39
% of total
7.5%
Change from 2016
-2.5pp
39
7.5%
-2.5pp
Tertiary education and independence (18 to 24)
2021 count
44
% of total
8.4%
Change from 2016
+0.4pp
44
8.4%
+0.4pp
Young workforce (25 to 34)
2021 count
63
% of total
12.0%
Change from 2016
+0.9pp
63
12.0%
+0.9pp
Parents and homebuilders (35 to 49)
2021 count
99
% of total
18.9%
Change from 2016
-5.7pp
99
18.9%
-5.7pp
Older workers and pre-retirees (50 to 59)
2021 count
85
% of total
16.3%
Change from 2016
-0.3pp
85
16.3%
-0.3pp
Empty nesters and retirees (60 to 69)
2021 count
66
% of total
12.6%
Change from 2016
-0.7pp
66
12.6%
-0.7pp
Seniors (70 to 84)
2021 count
52
% of total
9.9%
Change from 2016
+6.1pp
52
9.9%
+6.1pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
-0.5pp
0
0.0%
-0.5pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-1
+0.1pp
Primary schoolers (5 to 11)
+4
+1.2pp
Secondary schoolers (12 to 17)
-16
-2.5pp
Tertiary education and independence (18 to 24)
0
+0.4pp
Young workforce (25 to 34)
+2
+0.9pp
Parents and homebuilders (35 to 49)
-36
-5.7pp
Older workers and pre-retirees (50 to 59)
-6
-0.3pp
Empty nesters and retirees (60 to 69)
-7
-0.7pp
Seniors (70 to 84)
+31
+6.1pp
Elderly aged (85 and over)
-3
-0.5pp
Data table
Service age groups for Truro (part). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Mid Murray (DC).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mid Murray (DC)% | Count | % | Mid Murray (DC)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 28 | 5.4% | 3.6% | 29 | 5.3% | 4.1% | -1 | +0.1pp |
| Primary schoolers (5 to 11) | 47 | 9.0% | 6.2% | 43 | 7.8% | 6.3% | +4 | +1.2pp |
| Secondary schoolers (12 to 17) | 39 | 7.5% | 5.8% | 55 | 10.0% | 5.5% | -16 | -2.5pp |
| Tertiary education and independence (18 to 24) | 44 | 8.4% | 4.9% | 44 | 8.0% | 6.2% | 0 | +0.4pp |
| Young workforce (25 to 34) | 63 | 12.0% | 7.8% | 61 | 11.1% | 8.4% | +2 | +0.9pp |
| Parents and homebuilders (35 to 49) | 99 | 18.9% | 14.9% | 135 | 24.6% | 16.9% | -36 | -5.7pp |
| Older workers and pre-retirees (50 to 59) | 85 | 16.3% | 16.5% | 91 | 16.6% | 17.3% | -6 | -0.3pp |
| Empty nesters and retirees (60 to 69) | 66 | 12.6% | 19.9% | 73 | 13.3% | 18.8% | -7 | -0.7pp |
| Seniors (70 to 84) | 52 | 9.9% | 17.7% | 21 | 3.8% | 13.8% | +31 | +6.1pp |
| Elderly aged (85 and over) | 0 | 0.0% | 2.3% | 3 | 0.5% | 2.2% | -3 | -0.5pp |
| Total | 523 | 100.0% | 100.0% | 548 | 100.0% | 100.0% | -25 | 0.0pp |