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, Empty nesters and retirees (60 to 69) was the most common category among residents in Coomba Park, accounting for 31% (214 people). This share was higher than Mid-Coast (A) (17.9%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 59 people and 6.2 percentage points.
Section overview
Age structure - Service age groups
Coomba Park - Total persons (Usual residence)
This table summarises service age groups for Coomba Park in 2021 for persons, with comparison against Mid-Coast (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Coomba Park, with comparison markers for Mid-Coast (A).
Babies and pre-schoolers (0 to 4)
2021 count
3
% of total
0.4%
Change from 2016
-0.1pp
3
0.4%
-0.1pp
Primary schoolers (5 to 11)
2021 count
26
% of total
3.8%
Change from 2016
-1.3pp
26
3.8%
-1.3pp
Secondary schoolers (12 to 17)
2021 count
47
% of total
6.8%
Change from 2016
+0.7pp
47
6.8%
+0.7pp
Tertiary education and independence (18 to 24)
2021 count
27
% of total
3.9%
Change from 2016
+1.8pp
27
3.9%
+1.8pp
Young workforce (25 to 34)
2021 count
21
% of total
3.0%
Change from 2016
+0.4pp
21
3.0%
+0.4pp
Parents and homebuilders (35 to 49)
2021 count
83
% of total
12.0%
Change from 2016
+0.2pp
83
12.0%
+0.2pp
Older workers and pre-retirees (50 to 59)
2021 count
103
% of total
14.9%
Change from 2016
-5.7pp
103
14.9%
-5.7pp
Empty nesters and retirees (60 to 69)
2021 count
214
% of total
31.0%
Change from 2016
+6.2pp
214
31.0%
+6.2pp
Seniors (70 to 84)
2021 count
162
% of total
23.4%
Change from 2016
+4.5pp
162
23.4%
+4.5pp
Elderly aged (85 and over)
2021 count
13
% of total
1.9%
Change from 2016
+0.1pp
13
1.9%
+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)
0
-0.1pp
Primary schoolers (5 to 11)
-6
-1.3pp
Secondary schoolers (12 to 17)
+9
+0.7pp
Tertiary education and independence (18 to 24)
+14
+1.8pp
Young workforce (25 to 34)
+5
+0.4pp
Parents and homebuilders (35 to 49)
+9
+0.2pp
Older workers and pre-retirees (50 to 59)
-26
-5.7pp
Empty nesters and retirees (60 to 69)
+59
+6.2pp
Seniors (70 to 84)
+44
+4.5pp
Elderly aged (85 and over)
+2
+0.1pp
Data table
Service age groups for Coomba Park. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Mid-Coast (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mid-Coast (A)% | Count | % | Mid-Coast (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 3 | 0.4% | 4.1% | 3 | 0.5% | 4.6% | 0 | -0.1pp |
| Primary schoolers (5 to 11) | 26 | 3.8% | 7.1% | 32 | 5.1% | 7.6% | -6 | -1.3pp |
| Secondary schoolers (12 to 17) | 47 | 6.8% | 6.5% | 38 | 6.1% | 6.8% | +9 | +0.7pp |
| Tertiary education and independence (18 to 24) | 27 | 3.9% | 5.3% | 13 | 2.1% | 5.6% | +14 | +1.8pp |
| Young workforce (25 to 34) | 21 | 3.0% | 7.9% | 16 | 2.6% | 7.4% | +5 | +0.4pp |
| Parents and homebuilders (35 to 49) | 83 | 12.0% | 14.0% | 74 | 11.8% | 15.0% | +9 | +0.2pp |
| Older workers and pre-retirees (50 to 59) | 103 | 14.9% | 13.2% | 129 | 20.6% | 14.5% | -26 | -5.7pp |
| Empty nesters and retirees (60 to 69) | 214 | 31.0% | 17.9% | 155 | 24.8% | 17.7% | +59 | +6.2pp |
| Seniors (70 to 84) | 162 | 23.4% | 20.1% | 118 | 18.9% | 17.0% | +44 | +4.5pp |
| Elderly aged (85 and over) | 13 | 1.9% | 4.0% | 11 | 1.8% | 3.8% | +2 | +0.1pp |
| Total | 691 | 100.0% | 100.0% | 625 | 100.0% | 100.0% | +66 | 0.0pp |