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 Mullumbimby Creek, accounting for 21.7% (111 people). This share was higher than Byron (A) (14.6%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 98 people and 15.4 percentage points.
Section overview
Age structure - Service age groups
Mullumbimby Creek - Total persons (Usual residence)
This table summarises service age groups for Mullumbimby Creek in 2021 for persons, with comparison against Byron (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Mullumbimby Creek, with comparison markers for Byron (A).
Babies and pre-schoolers (0 to 4)
2021 count
15
% of total
2.9%
Change from 2016
+2.9pp
15
2.9%
+2.9pp
Primary schoolers (5 to 11)
2021 count
49
% of total
9.6%
Change from 2016
+1.9pp
49
9.6%
+1.9pp
Secondary schoolers (12 to 17)
2021 count
39
% of total
7.6%
Change from 2016
-0.6pp
39
7.6%
-0.6pp
Tertiary education and independence (18 to 24)
2021 count
27
% of total
5.3%
Change from 2016
-0.5pp
27
5.3%
-0.5pp
Young workforce (25 to 34)
2021 count
35
% of total
6.8%
Change from 2016
+0.5pp
35
6.8%
+0.5pp
Parents and homebuilders (35 to 49)
2021 count
107
% of total
20.9%
Change from 2016
-2.3pp
107
20.9%
-2.3pp
Older workers and pre-retirees (50 to 59)
2021 count
76
% of total
14.8%
Change from 2016
-3.1pp
76
14.8%
-3.1pp
Empty nesters and retirees (60 to 69)
2021 count
111
% of total
21.7%
Change from 2016
+15.4pp
111
21.7%
+15.4pp
Seniors (70 to 84)
2021 count
60
% of total
11.7%
Change from 2016
+2.5pp
60
11.7%
+2.5pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
-3.4pp
0
0.0%
-3.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+15
+2.9pp
Primary schoolers (5 to 11)
+33
+1.9pp
Secondary schoolers (12 to 17)
+22
-0.6pp
Tertiary education and independence (18 to 24)
+15
-0.5pp
Young workforce (25 to 34)
+22
+0.5pp
Parents and homebuilders (35 to 49)
+59
-2.3pp
Older workers and pre-retirees (50 to 59)
+39
-3.1pp
Empty nesters and retirees (60 to 69)
+98
+15.4pp
Seniors (70 to 84)
+41
+2.5pp
Elderly aged (85 and over)
-7
-3.4pp
Data table
Service age groups for Mullumbimby Creek. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Byron (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Byron (A)% | Count | % | Byron (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 15 | 2.9% | 4.8% | 0 | 0.0% | 4.9% | +15 | +2.9pp |
| Primary schoolers (5 to 11) | 49 | 9.6% | 7.7% | 16 | 7.7% | 8.4% | +33 | +1.9pp |
| Secondary schoolers (12 to 17) | 39 | 7.6% | 6.7% | 17 | 8.2% | 6.8% | +22 | -0.6pp |
| Tertiary education and independence (18 to 24) | 27 | 5.3% | 5.7% | 12 | 5.8% | 5.5% | +15 | -0.5pp |
| Young workforce (25 to 34) | 35 | 6.8% | 13.5% | 13 | 6.3% | 10.8% | +22 | +0.5pp |
| Parents and homebuilders (35 to 49) | 107 | 20.9% | 21.7% | 48 | 23.2% | 21.4% | +59 | -2.3pp |
| Older workers and pre-retirees (50 to 59) | 76 | 14.8% | 13.9% | 37 | 17.9% | 16.6% | +39 | -3.1pp |
| Empty nesters and retirees (60 to 69) | 111 | 21.7% | 14.6% | 13 | 6.3% | 15.3% | +98 | +15.4pp |
| Seniors (70 to 84) | 60 | 11.7% | 9.9% | 19 | 9.2% | 8.0% | +41 | +2.5pp |
| Elderly aged (85 and over) | 0 | 0.0% | 1.6% | 7 | 3.4% | 2.2% | -7 | -3.4pp |
| Total | 512 | 100.0% | 100.0% | 207 | 100.0% | 100.0% | +305 | 0.0pp |