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 Seven Mile Beach (part), accounting for 18.6% (273 people). This share was similar to Clarence (C) (18.8%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 83 people and 4.2 percentage points.
Section overview
Age structure - Service age groups
Seven Mile Beach (part) - Total persons (Usual residence)
This table summarises service age groups for Seven Mile Beach (part) in 2021 for persons, with comparison against Clarence (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Seven Mile Beach (part), with comparison markers for Clarence (C).
Babies and pre-schoolers (0 to 4)
2021 count
82
% of total
5.6%
Change from 2016
-0.2pp
82
5.6%
-0.2pp
Primary schoolers (5 to 11)
2021 count
123
% of total
8.4%
Change from 2016
-1.5pp
123
8.4%
-1.5pp
Secondary schoolers (12 to 17)
2021 count
109
% of total
7.4%
Change from 2016
-1.2pp
109
7.4%
-1.2pp
Tertiary education and independence (18 to 24)
2021 count
99
% of total
6.7%
Change from 2016
-0.1pp
99
6.7%
-0.1pp
Young workforce (25 to 34)
2021 count
128
% of total
8.7%
Change from 2016
+0.1pp
128
8.7%
+0.1pp
Parents and homebuilders (35 to 49)
2021 count
273
% of total
18.6%
Change from 2016
-3.6pp
273
18.6%
-3.6pp
Older workers and pre-retirees (50 to 59)
2021 count
231
% of total
15.7%
Change from 2016
-4.4pp
231
15.7%
-4.4pp
Empty nesters and retirees (60 to 69)
2021 count
233
% of total
15.9%
Change from 2016
+4.2pp
233
15.9%
+4.2pp
Seniors (70 to 84)
2021 count
172
% of total
11.7%
Change from 2016
+3.8pp
172
11.7%
+3.8pp
Elderly aged (85 and over)
2021 count
11
% of total
0.7%
Change from 2016
-0.4pp
11
0.7%
-0.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+7
-0.2pp
Primary schoolers (5 to 11)
-4
-1.5pp
Secondary schoolers (12 to 17)
-1
-1.2pp
Tertiary education and independence (18 to 24)
+12
-0.1pp
Young workforce (25 to 34)
+18
+0.1pp
Parents and homebuilders (35 to 49)
-12
-3.6pp
Older workers and pre-retirees (50 to 59)
-27
-4.4pp
Empty nesters and retirees (60 to 69)
+83
+4.2pp
Seniors (70 to 84)
+71
+3.8pp
Elderly aged (85 and over)
-3
-0.4pp
Data table
Service age groups for Seven Mile Beach (part). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Clarence (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Clarence (C)% | Count | % | Clarence (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 82 | 5.6% | 5.4% | 75 | 5.8% | 5.8% | +7 | -0.2pp |
| Primary schoolers (5 to 11) | 123 | 8.4% | 8.1% | 127 | 9.9% | 8.8% | -4 | -1.5pp |
| Secondary schoolers (12 to 17) | 109 | 7.4% | 6.8% | 110 | 8.6% | 6.9% | -1 | -1.2pp |
| Tertiary education and independence (18 to 24) | 99 | 6.7% | 7.2% | 87 | 6.8% | 7.4% | +12 | -0.1pp |
| Young workforce (25 to 34) | 128 | 8.7% | 14.0% | 110 | 8.6% | 11.3% | +18 | +0.1pp |
| Parents and homebuilders (35 to 49) | 273 | 18.6% | 18.8% | 285 | 22.2% | 19.1% | -12 | -3.6pp |
| Older workers and pre-retirees (50 to 59) | 231 | 15.7% | 12.1% | 258 | 20.1% | 14.1% | -27 | -4.4pp |
| Empty nesters and retirees (60 to 69) | 233 | 15.9% | 12.5% | 150 | 11.7% | 12.9% | +83 | +4.2pp |
| Seniors (70 to 84) | 172 | 11.7% | 12.3% | 101 | 7.9% | 11.0% | +71 | +3.8pp |
| Elderly aged (85 and over) | 11 | 0.7% | 2.7% | 14 | 1.1% | 2.7% | -3 | -0.4pp |
| Total | 1,467 | 100.0% | 100.0% | 1,286 | 100.0% | 100.0% | +181 | 0.0pp |