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 Barna, accounting for 33.3% (10 people). This share was higher than Kimba (DC) (13.1%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 10 people, while its share fell by NaN percentage points.
Section overview
Age structure - Service age groups
Barna - Total persons (Usual residence)
This table summarises service age groups for Barna in 2021 for persons, with comparison against Kimba (DC) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Barna, with comparison markers for Kimba (DC).
Babies and pre-schoolers (0 to 4)
2021 count
0
% of total
0.0%
Change from 2016
NaNpp
0
0.0%
NaNpp
Primary schoolers (5 to 11)
2021 count
0
% of total
0.0%
Change from 2016
NaNpp
0
0.0%
NaNpp
Secondary schoolers (12 to 17)
2021 count
0
% of total
0.0%
Change from 2016
NaNpp
0
0.0%
NaNpp
Tertiary education and independence (18 to 24)
2021 count
0
% of total
0.0%
Change from 2016
NaNpp
0
0.0%
NaNpp
Young workforce (25 to 34)
2021 count
0
% of total
0.0%
Change from 2016
NaNpp
0
0.0%
NaNpp
Parents and homebuilders (35 to 49)
2021 count
3
% of total
10.0%
Change from 2016
NaNpp
3
10.0%
NaNpp
Older workers and pre-retirees (50 to 59)
2021 count
0
% of total
0.0%
Change from 2016
NaNpp
0
0.0%
NaNpp
Empty nesters and retirees (60 to 69)
2021 count
10
% of total
33.3%
Change from 2016
NaNpp
10
33.3%
NaNpp
Seniors (70 to 84)
2021 count
10
% of total
33.3%
Change from 2016
NaNpp
10
33.3%
NaNpp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
NaNpp
0
0.0%
NaNpp
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
NaNpp
Primary schoolers (5 to 11)
0
NaNpp
Secondary schoolers (12 to 17)
0
NaNpp
Tertiary education and independence (18 to 24)
0
NaNpp
Young workforce (25 to 34)
0
NaNpp
Parents and homebuilders (35 to 49)
+3
NaNpp
Older workers and pre-retirees (50 to 59)
0
NaNpp
Empty nesters and retirees (60 to 69)
+10
NaNpp
Seniors (70 to 84)
+10
NaNpp
Elderly aged (85 and over)
0
NaNpp
Data table
Service age groups for Barna. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Kimba (DC).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Kimba (DC)% | Count | % | Kimba (DC)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 0 | 0.0% | 5.4% | 0 | NaN% | 8.7% | 0 | NaNpp |
| Primary schoolers (5 to 11) | 0 | 0.0% | 13.2% | 0 | NaN% | 11.3% | 0 | NaNpp |
| Secondary schoolers (12 to 17) | 0 | 0.0% | 6.6% | 0 | NaN% | 4.9% | 0 | NaNpp |
| Tertiary education and independence (18 to 24) | 0 | 0.0% | 5.4% | 0 | NaN% | 5.4% | 0 | NaNpp |
| Young workforce (25 to 34) | 0 | 0.0% | 10.4% | 0 | NaN% | 14.4% | 0 | NaNpp |
| Parents and homebuilders (35 to 49) | 3 | 10.0% | 18.1% | 0 | NaN% | 15.1% | +3 | NaNpp |
| Older workers and pre-retirees (50 to 59) | 0 | 0.0% | 12.2% | 0 | NaN% | 14.6% | 0 | NaNpp |
| Empty nesters and retirees (60 to 69) | 10 | 33.3% | 13.1% | 0 | NaN% | 9.4% | +10 | NaNpp |
| Seniors (70 to 84) | 10 | 33.3% | 13.0% | 0 | NaN% | 10.7% | +10 | NaNpp |
| Elderly aged (85 and over) | 0 | 0.0% | 3.8% | 0 | NaN% | 2.9% | 0 | NaNpp |
| Total | 30 | 100.0% | 100.0% | 0 | NaN% | 100.0% | +30 | NaNpp |