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 Waterloo Corner (part), accounting for 24.9% (275 people). This share was higher than Playford (C) (7.2%). Since 2016, the biggest change was in Primary schoolers (5 to 11), which decreased by 39 people and 2.8 percentage points.
Section overview
Age structure - Service age groups
Waterloo Corner (part) - Total persons (Usual residence)
This table summarises service age groups for Waterloo Corner (part) in 2021 for persons, with comparison against Playford (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Waterloo Corner (part), with comparison markers for Playford (C).
Babies and pre-schoolers (0 to 4)
2021 count
29
% of total
2.6%
Change from 2016
0.0pp
29
2.6%
0.0pp
Primary schoolers (5 to 11)
2021 count
50
% of total
4.5%
Change from 2016
-2.8pp
50
4.5%
-2.8pp
Secondary schoolers (12 to 17)
2021 count
71
% of total
6.4%
Change from 2016
+0.7pp
71
6.4%
+0.7pp
Tertiary education and independence (18 to 24)
2021 count
63
% of total
5.7%
Change from 2016
+0.3pp
63
5.7%
+0.3pp
Young workforce (25 to 34)
2021 count
79
% of total
7.2%
Change from 2016
+0.3pp
79
7.2%
+0.3pp
Parents and homebuilders (35 to 49)
2021 count
157
% of total
14.2%
Change from 2016
-0.7pp
157
14.2%
-0.7pp
Older workers and pre-retirees (50 to 59)
2021 count
142
% of total
12.9%
Change from 2016
-1.4pp
142
12.9%
-1.4pp
Empty nesters and retirees (60 to 69)
2021 count
215
% of total
19.5%
Change from 2016
+1.8pp
215
19.5%
+1.8pp
Seniors (70 to 84)
2021 count
275
% of total
24.9%
Change from 2016
+5.3pp
275
24.9%
+5.3pp
Elderly aged (85 and over)
2021 count
49
% of total
4.4%
Change from 2016
+2.2pp
49
4.4%
+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)
-3
0.0pp
Primary schoolers (5 to 11)
-39
-2.8pp
Secondary schoolers (12 to 17)
+1
+0.7pp
Tertiary education and independence (18 to 24)
-3
+0.3pp
Young workforce (25 to 34)
-5
+0.3pp
Parents and homebuilders (35 to 49)
-26
-0.7pp
Older workers and pre-retirees (50 to 59)
-33
-1.4pp
Empty nesters and retirees (60 to 69)
-2
+1.8pp
Seniors (70 to 84)
+35
+5.3pp
Elderly aged (85 and over)
+22
+2.2pp
Data table
Service age groups for Waterloo Corner (part). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Playford (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Playford (C)% | Count | % | Playford (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 29 | 2.6% | 7.5% | 32 | 2.6% | 8.6% | -3 | 0.0pp |
| Primary schoolers (5 to 11) | 50 | 4.5% | 11.0% | 89 | 7.3% | 10.6% | -39 | -2.8pp |
| Secondary schoolers (12 to 17) | 71 | 6.4% | 8.1% | 70 | 5.7% | 7.8% | +1 | +0.7pp |
| Tertiary education and independence (18 to 24) | 63 | 5.7% | 9.5% | 66 | 5.4% | 10.5% | -3 | +0.3pp |
| Young workforce (25 to 34) | 79 | 7.2% | 15.9% | 84 | 6.9% | 15.3% | -5 | +0.3pp |
| Parents and homebuilders (35 to 49) | 157 | 14.2% | 18.5% | 183 | 14.9% | 18.2% | -26 | -0.7pp |
| Older workers and pre-retirees (50 to 59) | 142 | 12.9% | 11.6% | 175 | 14.3% | 12.3% | -33 | -1.4pp |
| Empty nesters and retirees (60 to 69) | 215 | 19.5% | 9.1% | 217 | 17.7% | 8.4% | -2 | +1.8pp |
| Seniors (70 to 84) | 275 | 24.9% | 7.2% | 240 | 19.6% | 6.9% | +35 | +5.3pp |
| Elderly aged (85 and over) | 49 | 4.4% | 1.6% | 27 | 2.2% | 1.5% | +22 | +2.2pp |
| Total | 1,103 | 100.0% | 100.0% | 1,225 | 100.0% | 100.0% | -122 | 0.0pp |