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 Barnawartha, accounting for 18.5% (183 people). This share was higher than Indigo (S) (18%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 46 people and 4.2 percentage points.
Section overview
Age structure - Service age groups
Barnawartha - Total persons (Usual residence)
This table summarises service age groups for Barnawartha in 2021 for persons, with comparison against Indigo (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Barnawartha, with comparison markers for Indigo (S).
Babies and pre-schoolers (0 to 4)
2021 count
74
% of total
7.5%
Change from 2016
+0.3pp
74
7.5%
+0.3pp
Primary schoolers (5 to 11)
2021 count
87
% of total
8.8%
Change from 2016
-1.0pp
87
8.8%
-1.0pp
Secondary schoolers (12 to 17)
2021 count
97
% of total
9.8%
Change from 2016
+2.1pp
97
9.8%
+2.1pp
Tertiary education and independence (18 to 24)
2021 count
51
% of total
5.2%
Change from 2016
-3.9pp
51
5.2%
-3.9pp
Young workforce (25 to 34)
2021 count
129
% of total
13.1%
Change from 2016
+1.9pp
129
13.1%
+1.9pp
Parents and homebuilders (35 to 49)
2021 count
183
% of total
18.5%
Change from 2016
-3.3pp
183
18.5%
-3.3pp
Older workers and pre-retirees (50 to 59)
2021 count
155
% of total
15.7%
Change from 2016
-1.9pp
155
15.7%
-1.9pp
Empty nesters and retirees (60 to 69)
2021 count
126
% of total
12.8%
Change from 2016
+1.4pp
126
12.8%
+1.4pp
Seniors (70 to 84)
2021 count
92
% of total
9.3%
Change from 2016
+4.2pp
92
9.3%
+4.2pp
Elderly aged (85 and over)
2021 count
3
% of total
0.3%
Change from 2016
0.0pp
3
0.3%
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
+0.3pp
Primary schoolers (5 to 11)
-2
-1.0pp
Secondary schoolers (12 to 17)
+27
+2.1pp
Tertiary education and independence (18 to 24)
-31
-3.9pp
Young workforce (25 to 34)
+28
+1.9pp
Parents and homebuilders (35 to 49)
-14
-3.3pp
Older workers and pre-retirees (50 to 59)
-4
-1.9pp
Empty nesters and retirees (60 to 69)
+23
+1.4pp
Seniors (70 to 84)
+46
+4.2pp
Elderly aged (85 and over)
0
0.0pp
Data table
Service age groups for Barnawartha. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Indigo (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Indigo (S)% | Count | % | Indigo (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 74 | 7.5% | 4.9% | 65 | 7.2% | 4.8% | +9 | +0.3pp |
| Primary schoolers (5 to 11) | 87 | 8.8% | 8.4% | 89 | 9.8% | 8.9% | -2 | -1.0pp |
| Secondary schoolers (12 to 17) | 97 | 9.8% | 8.1% | 70 | 7.7% | 8.0% | +27 | +2.1pp |
| Tertiary education and independence (18 to 24) | 51 | 5.2% | 5.3% | 82 | 9.1% | 5.7% | -31 | -3.9pp |
| Young workforce (25 to 34) | 129 | 13.1% | 8.5% | 101 | 11.2% | 7.9% | +28 | +1.9pp |
| Parents and homebuilders (35 to 49) | 183 | 18.5% | 18.0% | 197 | 21.8% | 19.6% | -14 | -3.3pp |
| Older workers and pre-retirees (50 to 59) | 155 | 15.7% | 15.1% | 159 | 17.6% | 16.4% | -4 | -1.9pp |
| Empty nesters and retirees (60 to 69) | 126 | 12.8% | 15.7% | 103 | 11.4% | 15.8% | +23 | +1.4pp |
| Seniors (70 to 84) | 92 | 9.3% | 13.9% | 46 | 5.1% | 10.8% | +46 | +4.2pp |
| Elderly aged (85 and over) | 3 | 0.3% | 2.3% | 3 | 0.3% | 2.2% | 0 | 0.0pp |
| Total | 987 | 100.0% | 100.0% | 904 | 100.0% | 100.0% | +83 | 0.0pp |