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, Seniors (70 to 84) was the most common category among residents in Mannum, accounting for 23% (670 people). This share was higher than Mid Murray (DC) (17.7%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 407 people and 10.9 percentage points.
Section overview
Age structure - Service age groups
Mannum - Total persons (Usual residence)
This table summarises service age groups for 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 Mannum, with comparison markers for Mid Murray (DC).
Babies and pre-schoolers (0 to 4)
2021 count
130
% of total
4.5%
Change from 2016
-0.1pp
130
4.5%
-0.1pp
Primary schoolers (5 to 11)
2021 count
201
% of total
6.9%
Change from 2016
-1.1pp
201
6.9%
-1.1pp
Secondary schoolers (12 to 17)
2021 count
159
% of total
5.4%
Change from 2016
-1.9pp
159
5.4%
-1.9pp
Tertiary education and independence (18 to 24)
2021 count
154
% of total
5.3%
Change from 2016
-1.6pp
154
5.3%
-1.6pp
Young workforce (25 to 34)
2021 count
206
% of total
7.1%
Change from 2016
-1.5pp
206
7.1%
-1.5pp
Parents and homebuilders (35 to 49)
2021 count
379
% of total
13.0%
Change from 2016
-6.6pp
379
13.0%
-6.6pp
Older workers and pre-retirees (50 to 59)
2021 count
408
% of total
14.0%
Change from 2016
-2.8pp
408
14.0%
-2.8pp
Empty nesters and retirees (60 to 69)
2021 count
531
% of total
18.2%
Change from 2016
+2.4pp
531
18.2%
+2.4pp
Seniors (70 to 84)
2021 count
670
% of total
23.0%
Change from 2016
+10.9pp
670
23.0%
+10.9pp
Elderly aged (85 and over)
2021 count
116
% of total
4.0%
Change from 2016
+2.2pp
116
4.0%
+2.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+29
-0.1pp
Primary schoolers (5 to 11)
+27
-1.1pp
Secondary schoolers (12 to 17)
0
-1.9pp
Tertiary education and independence (18 to 24)
+4
-1.6pp
Young workforce (25 to 34)
+18
-1.5pp
Parents and homebuilders (35 to 49)
-48
-6.6pp
Older workers and pre-retirees (50 to 59)
+42
-2.8pp
Empty nesters and retirees (60 to 69)
+188
+2.4pp
Seniors (70 to 84)
+407
+10.9pp
Elderly aged (85 and over)
+76
+2.2pp
Data table
Service age groups for 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) | 130 | 4.5% | 3.6% | 101 | 4.6% | 4.1% | +29 | -0.1pp |
| Primary schoolers (5 to 11) | 201 | 6.9% | 6.2% | 174 | 8.0% | 6.3% | +27 | -1.1pp |
| Secondary schoolers (12 to 17) | 159 | 5.4% | 5.8% | 159 | 7.3% | 5.5% | 0 | -1.9pp |
| Tertiary education and independence (18 to 24) | 154 | 5.3% | 4.9% | 150 | 6.9% | 6.2% | +4 | -1.6pp |
| Young workforce (25 to 34) | 206 | 7.1% | 7.8% | 188 | 8.6% | 8.4% | +18 | -1.5pp |
| Parents and homebuilders (35 to 49) | 379 | 13.0% | 14.9% | 427 | 19.6% | 16.9% | -48 | -6.6pp |
| Older workers and pre-retirees (50 to 59) | 408 | 14.0% | 16.5% | 366 | 16.8% | 17.3% | +42 | -2.8pp |
| Empty nesters and retirees (60 to 69) | 531 | 18.2% | 19.9% | 343 | 15.8% | 18.8% | +188 | +2.4pp |
| Seniors (70 to 84) | 670 | 23.0% | 17.7% | 263 | 12.1% | 13.8% | +407 | +10.9pp |
| Elderly aged (85 and over) | 116 | 4.0% | 2.3% | 40 | 1.8% | 2.2% | +76 | +2.2pp |
| Total | 2,919 | 100.0% | 100.0% | 2,177 | 100.0% | 100.0% | +742 | 0.0pp |