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, Older workers and pre-retirees (50 to 59) was the most common category among residents in Marcus Beach, accounting for 19.4% (163 people). This share was higher than Noosa (S) (15.2%). Since 2016, the biggest change was in Young workforce (25 to 34), which increased by 39 people and 4 percentage points.
Section overview
Age structure - Service age groups
Marcus Beach - Total persons (Usual residence)
This table summarises service age groups for Marcus Beach in 2021 for persons, with comparison against Noosa (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Marcus Beach, with comparison markers for Noosa (S).
Babies and pre-schoolers (0 to 4)
2021 count
41
% of total
4.9%
Change from 2016
+0.7pp
41
4.9%
+0.7pp
Primary schoolers (5 to 11)
2021 count
54
% of total
6.4%
Change from 2016
-3.4pp
54
6.4%
-3.4pp
Secondary schoolers (12 to 17)
2021 count
72
% of total
8.6%
Change from 2016
-1.2pp
72
8.6%
-1.2pp
Tertiary education and independence (18 to 24)
2021 count
45
% of total
5.4%
Change from 2016
+0.9pp
45
5.4%
+0.9pp
Young workforce (25 to 34)
2021 count
88
% of total
10.5%
Change from 2016
+4.0pp
88
10.5%
+4.0pp
Parents and homebuilders (35 to 49)
2021 count
160
% of total
19.1%
Change from 2016
-0.3pp
160
19.1%
-0.3pp
Older workers and pre-retirees (50 to 59)
2021 count
163
% of total
19.4%
Change from 2016
-0.3pp
163
19.4%
-0.3pp
Empty nesters and retirees (60 to 69)
2021 count
135
% of total
16.1%
Change from 2016
+1.4pp
135
16.1%
+1.4pp
Seniors (70 to 84)
2021 count
96
% of total
11.4%
Change from 2016
0.0pp
96
11.4%
0.0pp
Elderly aged (85 and over)
2021 count
7
% of total
0.8%
Change from 2016
0.0pp
7
0.8%
0.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+9
+0.7pp
Primary schoolers (5 to 11)
-20
-3.4pp
Secondary schoolers (12 to 17)
-2
-1.2pp
Tertiary education and independence (18 to 24)
+11
+0.9pp
Young workforce (25 to 34)
+39
+4.0pp
Parents and homebuilders (35 to 49)
+13
-0.3pp
Older workers and pre-retirees (50 to 59)
+14
-0.3pp
Empty nesters and retirees (60 to 69)
+24
+1.4pp
Seniors (70 to 84)
+10
0.0pp
Elderly aged (85 and over)
+1
0.0pp
Data table
Service age groups for Marcus Beach. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Noosa (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Noosa (S)% | Count | % | Noosa (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 41 | 4.9% | 3.6% | 32 | 4.2% | 4.2% | +9 | +0.7pp |
| Primary schoolers (5 to 11) | 54 | 6.4% | 7.4% | 74 | 9.8% | 8.2% | -20 | -3.4pp |
| Secondary schoolers (12 to 17) | 72 | 8.6% | 7.5% | 74 | 9.8% | 7.5% | -2 | -1.2pp |
| Tertiary education and independence (18 to 24) | 45 | 5.4% | 5.2% | 34 | 4.5% | 5.3% | +11 | +0.9pp |
| Young workforce (25 to 34) | 88 | 10.5% | 7.3% | 49 | 6.5% | 7.4% | +39 | +4.0pp |
| Parents and homebuilders (35 to 49) | 160 | 19.1% | 17.7% | 147 | 19.4% | 19.1% | +13 | -0.3pp |
| Older workers and pre-retirees (50 to 59) | 163 | 19.4% | 15.2% | 149 | 19.7% | 16.0% | +14 | -0.3pp |
| Empty nesters and retirees (60 to 69) | 135 | 16.1% | 16.2% | 111 | 14.7% | 16.4% | +24 | +1.4pp |
| Seniors (70 to 84) | 96 | 11.4% | 16.9% | 86 | 11.4% | 13.2% | +10 | 0.0pp |
| Elderly aged (85 and over) | 7 | 0.8% | 2.9% | 6 | 0.8% | 2.6% | +1 | 0.0pp |
| Total | 839 | 100.0% | 100.0% | 757 | 100.0% | 100.0% | +82 | 0.0pp |