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 Port Mannum, accounting for 20.9% (50 people). This share was higher than Mid Murray (DC) (16.5%). Since 2016, the biggest change was in Secondary schoolers (12 to 17), which increased by 19 people and 8 percentage points.
Section overview
Age structure - Service age groups
Port Mannum - Total persons (Usual residence)
This table summarises service age groups for Port Mannum 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 Port Mannum, with comparison markers for Mid Murray (DC).
Babies and pre-schoolers (0 to 4)
2021 count
0
% of total
0.0%
Change from 2016
-7.5pp
0
0.0%
-7.5pp
Primary schoolers (5 to 11)
2021 count
20
% of total
8.4%
Change from 2016
+2.2pp
20
8.4%
+2.2pp
Secondary schoolers (12 to 17)
2021 count
22
% of total
9.2%
Change from 2016
+8.0pp
22
9.2%
+8.0pp
Tertiary education and independence (18 to 24)
2021 count
7
% of total
2.9%
Change from 2016
-5.4pp
7
2.9%
-5.4pp
Young workforce (25 to 34)
2021 count
18
% of total
7.5%
Change from 2016
+3.4pp
18
7.5%
+3.4pp
Parents and homebuilders (35 to 49)
2021 count
28
% of total
11.7%
Change from 2016
-1.6pp
28
11.7%
-1.6pp
Older workers and pre-retirees (50 to 59)
2021 count
50
% of total
20.9%
Change from 2016
+2.6pp
50
20.9%
+2.6pp
Empty nesters and retirees (60 to 69)
2021 count
43
% of total
18.0%
Change from 2016
-0.3pp
43
18.0%
-0.3pp
Seniors (70 to 84)
2021 count
47
% of total
19.7%
Change from 2016
-0.2pp
47
19.7%
-0.2pp
Elderly aged (85 and over)
2021 count
7
% of total
2.9%
Change from 2016
+1.7pp
7
2.9%
+1.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-18
-7.5pp
Primary schoolers (5 to 11)
+5
+2.2pp
Secondary schoolers (12 to 17)
+19
+8.0pp
Tertiary education and independence (18 to 24)
-13
-5.4pp
Young workforce (25 to 34)
+8
+3.4pp
Parents and homebuilders (35 to 49)
-4
-1.6pp
Older workers and pre-retirees (50 to 59)
+6
+2.6pp
Empty nesters and retirees (60 to 69)
-1
-0.3pp
Seniors (70 to 84)
-1
-0.2pp
Elderly aged (85 and over)
+4
+1.7pp
Data table
Service age groups for Port Mannum. 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) | 0 | 0.0% | 3.6% | 18 | 7.5% | 4.1% | -18 | -7.5pp |
| Primary schoolers (5 to 11) | 20 | 8.4% | 6.2% | 15 | 6.2% | 6.3% | +5 | +2.2pp |
| Secondary schoolers (12 to 17) | 22 | 9.2% | 5.8% | 3 | 1.2% | 5.5% | +19 | +8.0pp |
| Tertiary education and independence (18 to 24) | 7 | 2.9% | 4.9% | 20 | 8.3% | 6.2% | -13 | -5.4pp |
| Young workforce (25 to 34) | 18 | 7.5% | 7.8% | 10 | 4.1% | 8.4% | +8 | +3.4pp |
| Parents and homebuilders (35 to 49) | 28 | 11.7% | 14.9% | 32 | 13.3% | 16.9% | -4 | -1.6pp |
| Older workers and pre-retirees (50 to 59) | 50 | 20.9% | 16.5% | 44 | 18.3% | 17.3% | +6 | +2.6pp |
| Empty nesters and retirees (60 to 69) | 43 | 18.0% | 19.9% | 44 | 18.3% | 18.8% | -1 | -0.3pp |
| Seniors (70 to 84) | 47 | 19.7% | 17.7% | 48 | 19.9% | 13.8% | -1 | -0.2pp |
| Elderly aged (85 and over) | 7 | 2.9% | 2.3% | 3 | 1.2% | 2.2% | +4 | +1.7pp |
| Total | 239 | 100.0% | 100.0% | 241 | 100.0% | 100.0% | -2 | 0.0pp |