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, Seniors (70 to 84) was the most common category among residents in Killarney (Qld), accounting for 21.6% (198 people). This share was higher than Southern Downs (R) (15.8%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 179 people and 15.8 percentage points.
Section overview
Age structure - Service age groups
Killarney (Qld) - Total persons (Usual residence)
This table summarises service age groups for Killarney (Qld) in 2021 for persons, with comparison against Southern Downs (R) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Killarney (Qld), with comparison markers for Southern Downs (R).
Babies and pre-schoolers (0 to 4)
2021 count
24
% of total
2.6%
Change from 2016
-2.9pp
24
2.6%
-2.9pp
Primary schoolers (5 to 11)
2021 count
53
% of total
5.8%
Change from 2016
-3.4pp
53
5.8%
-3.4pp
Secondary schoolers (12 to 17)
2021 count
51
% of total
5.6%
Change from 2016
-2.1pp
51
5.6%
-2.1pp
Tertiary education and independence (18 to 24)
2021 count
55
% of total
6.0%
Change from 2016
+1.4pp
55
6.0%
+1.4pp
Young workforce (25 to 34)
2021 count
44
% of total
4.8%
Change from 2016
-3.5pp
44
4.8%
-3.5pp
Parents and homebuilders (35 to 49)
2021 count
104
% of total
11.3%
Change from 2016
-10.8pp
104
11.3%
-10.8pp
Older workers and pre-retirees (50 to 59)
2021 count
139
% of total
15.1%
Change from 2016
-2.1pp
139
15.1%
-2.1pp
Empty nesters and retirees (60 to 69)
2021 count
185
% of total
20.2%
Change from 2016
+3.6pp
185
20.2%
+3.6pp
Seniors (70 to 84)
2021 count
198
% of total
21.6%
Change from 2016
+15.8pp
198
21.6%
+15.8pp
Elderly aged (85 and over)
2021 count
55
% of total
6.0%
Change from 2016
+4.2pp
55
6.0%
+4.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+6
-2.9pp
Primary schoolers (5 to 11)
+23
-3.4pp
Secondary schoolers (12 to 17)
+26
-2.1pp
Tertiary education and independence (18 to 24)
+40
+1.4pp
Young workforce (25 to 34)
+17
-3.5pp
Parents and homebuilders (35 to 49)
+32
-10.8pp
Older workers and pre-retirees (50 to 59)
+83
-2.1pp
Empty nesters and retirees (60 to 69)
+131
+3.6pp
Seniors (70 to 84)
+179
+15.8pp
Elderly aged (85 and over)
+49
+4.2pp
Data table
Service age groups for Killarney (Qld). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Southern Downs (R).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Southern Downs (R)% | Count | % | Southern Downs (R)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 24 | 2.6% | 4.6% | 18 | 5.5% | 5.7% | +6 | -2.9pp |
| Primary schoolers (5 to 11) | 53 | 5.8% | 8.4% | 30 | 9.2% | 9.1% | +23 | -3.4pp |
| Secondary schoolers (12 to 17) | 51 | 5.6% | 8.0% | 25 | 7.7% | 8.2% | +26 | -2.1pp |
| Tertiary education and independence (18 to 24) | 55 | 6.0% | 6.3% | 15 | 4.6% | 6.7% | +40 | +1.4pp |
| Young workforce (25 to 34) | 44 | 4.8% | 9.5% | 27 | 8.3% | 9.0% | +17 | -3.5pp |
| Parents and homebuilders (35 to 49) | 104 | 11.3% | 15.5% | 72 | 22.1% | 16.7% | +32 | -10.8pp |
| Older workers and pre-retirees (50 to 59) | 139 | 15.1% | 13.6% | 56 | 17.2% | 14.1% | +83 | -2.1pp |
| Empty nesters and retirees (60 to 69) | 185 | 20.2% | 15.6% | 54 | 16.6% | 14.9% | +131 | +3.6pp |
| Seniors (70 to 84) | 198 | 21.6% | 15.8% | 19 | 5.8% | 12.9% | +179 | +15.8pp |
| Elderly aged (85 and over) | 55 | 6.0% | 2.8% | 6 | 1.8% | 2.6% | +49 | +4.2pp |
| Total | 918 | 100.0% | 100.0% | 326 | 100.0% | 100.0% | +592 | 0.0pp |