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 Mitchell Park (SA), accounting for 20.3% (1,166 people). This share was similar to Marion (C) (20.2%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 169 people and 2.1 percentage points.
Section overview
Age structure - Service age groups
Mitchell Park (SA) - Total persons (Usual residence)
This table summarises service age groups for Mitchell Park (SA) in 2021 for persons, with comparison against Marion (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Mitchell Park (SA), with comparison markers for Marion (C).
Babies and pre-schoolers (0 to 4)
2021 count
297
% of total
5.2%
Change from 2016
-0.7pp
297
5.2%
-0.7pp
Primary schoolers (5 to 11)
2021 count
403
% of total
7.0%
Change from 2016
+0.4pp
403
7.0%
+0.4pp
Secondary schoolers (12 to 17)
2021 count
309
% of total
5.4%
Change from 2016
+0.1pp
309
5.4%
+0.1pp
Tertiary education and independence (18 to 24)
2021 count
576
% of total
10.0%
Change from 2016
-1.3pp
576
10.0%
-1.3pp
Young workforce (25 to 34)
2021 count
1,036
% of total
18.0%
Change from 2016
+0.7pp
1,036
18.0%
+0.7pp
Parents and homebuilders (35 to 49)
2021 count
1,166
% of total
20.3%
Change from 2016
+2.1pp
1,166
20.3%
+2.1pp
Older workers and pre-retirees (50 to 59)
2021 count
614
% of total
10.7%
Change from 2016
-0.8pp
614
10.7%
-0.8pp
Empty nesters and retirees (60 to 69)
2021 count
652
% of total
11.3%
Change from 2016
+0.8pp
652
11.3%
+0.8pp
Seniors (70 to 84)
2021 count
593
% of total
10.3%
Change from 2016
-0.7pp
593
10.3%
-0.7pp
Elderly aged (85 and over)
2021 count
133
% of total
2.3%
Change from 2016
-0.1pp
133
2.3%
-0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-23
-0.7pp
Primary schoolers (5 to 11)
+41
+0.4pp
Secondary schoolers (12 to 17)
+22
+0.1pp
Tertiary education and independence (18 to 24)
-44
-1.3pp
Young workforce (25 to 34)
+90
+0.7pp
Parents and homebuilders (35 to 49)
+169
+2.1pp
Older workers and pre-retirees (50 to 59)
-16
-0.8pp
Empty nesters and retirees (60 to 69)
+80
+0.8pp
Seniors (70 to 84)
-6
-0.7pp
Elderly aged (85 and over)
0
-0.1pp
Data table
Service age groups for Mitchell Park (SA). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Marion (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Marion (C)% | Count | % | Marion (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 297 | 5.2% | 5.4% | 320 | 5.9% | 5.9% | -23 | -0.7pp |
| Primary schoolers (5 to 11) | 403 | 7.0% | 7.7% | 362 | 6.6% | 7.4% | +41 | +0.4pp |
| Secondary schoolers (12 to 17) | 309 | 5.4% | 6.1% | 287 | 5.3% | 6.1% | +22 | +0.1pp |
| Tertiary education and independence (18 to 24) | 576 | 10.0% | 8.8% | 620 | 11.3% | 9.6% | -44 | -1.3pp |
| Young workforce (25 to 34) | 1,036 | 18.0% | 15.1% | 946 | 17.3% | 14.8% | +90 | +0.7pp |
| Parents and homebuilders (35 to 49) | 1,166 | 20.3% | 20.2% | 997 | 18.2% | 19.5% | +169 | +2.1pp |
| Older workers and pre-retirees (50 to 59) | 614 | 10.7% | 11.7% | 630 | 11.5% | 13.0% | -16 | -0.8pp |
| Empty nesters and retirees (60 to 69) | 652 | 11.3% | 11.8% | 572 | 10.5% | 11.4% | +80 | +0.8pp |
| Seniors (70 to 84) | 593 | 10.3% | 10.4% | 599 | 11.0% | 9.1% | -6 | -0.7pp |
| Elderly aged (85 and over) | 133 | 2.3% | 2.9% | 133 | 2.4% | 3.1% | 0 | -0.1pp |
| Total | 5,754 | 100.0% | 100.0% | 5,465 | 100.0% | 100.0% | +289 | 0.0pp |