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, Young workforce (25 to 34) was the most common category among residents in Kalkallo, accounting for 28.2% (1,564 people). This share was higher than Hume (C) (16.4%). Since 2016, the biggest change was in Young workforce (25 to 34), which increased by 1,553 people and 17.7 percentage points.
Section overview
Age structure - Service age groups
Kalkallo - Total persons (Usual residence)
This table summarises service age groups for Kalkallo in 2021 for persons, with comparison against Hume (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Kalkallo, with comparison markers for Hume (C).
Babies and pre-schoolers (0 to 4)
2021 count
793
% of total
14.3%
Change from 2016
+8.6pp
793
14.3%
+8.6pp
Primary schoolers (5 to 11)
2021 count
635
% of total
11.4%
Change from 2016
+11.4pp
635
11.4%
+11.4pp
Secondary schoolers (12 to 17)
2021 count
276
% of total
5.0%
Change from 2016
+2.1pp
276
5.0%
+2.1pp
Tertiary education and independence (18 to 24)
2021 count
388
% of total
7.0%
Change from 2016
+1.3pp
388
7.0%
+1.3pp
Young workforce (25 to 34)
2021 count
1,564
% of total
28.2%
Change from 2016
+17.7pp
1,564
28.2%
+17.7pp
Parents and homebuilders (35 to 49)
2021 count
1,341
% of total
24.2%
Change from 2016
+9.9pp
1,341
24.2%
+9.9pp
Older workers and pre-retirees (50 to 59)
2021 count
279
% of total
5.0%
Change from 2016
-3.6pp
279
5.0%
-3.6pp
Empty nesters and retirees (60 to 69)
2021 count
183
% of total
3.3%
Change from 2016
-11.9pp
183
3.3%
-11.9pp
Seniors (70 to 84)
2021 count
99
% of total
1.8%
Change from 2016
-7.7pp
99
1.8%
-7.7pp
Elderly aged (85 and over)
2021 count
9
% of total
0.2%
Change from 2016
+0.2pp
9
0.2%
+0.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+787
+8.6pp
Primary schoolers (5 to 11)
+635
+11.4pp
Secondary schoolers (12 to 17)
+273
+2.1pp
Tertiary education and independence (18 to 24)
+382
+1.3pp
Young workforce (25 to 34)
+1,553
+17.7pp
Parents and homebuilders (35 to 49)
+1,326
+9.9pp
Older workers and pre-retirees (50 to 59)
+270
-3.6pp
Empty nesters and retirees (60 to 69)
+167
-11.9pp
Seniors (70 to 84)
+89
-7.7pp
Elderly aged (85 and over)
+9
+0.2pp
Data table
Service age groups for Kalkallo. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Hume (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Hume (C)% | Count | % | Hume (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 793 | 14.3% | 7.7% | 6 | 5.7% | 7.9% | +787 | +8.6pp |
| Primary schoolers (5 to 11) | 635 | 11.4% | 10.6% | 0 | 0.0% | 10.3% | +635 | +11.4pp |
| Secondary schoolers (12 to 17) | 276 | 5.0% | 7.9% | 3 | 2.9% | 8.3% | +273 | +2.1pp |
| Tertiary education and independence (18 to 24) | 388 | 7.0% | 9.3% | 6 | 5.7% | 10.3% | +382 | +1.3pp |
| Young workforce (25 to 34) | 1,564 | 28.2% | 16.4% | 11 | 10.5% | 15.7% | +1,553 | +17.7pp |
| Parents and homebuilders (35 to 49) | 1,341 | 24.2% | 21.1% | 15 | 14.3% | 20.7% | +1,326 | +9.9pp |
| Older workers and pre-retirees (50 to 59) | 279 | 5.0% | 11.4% | 9 | 8.6% | 12.0% | +270 | -3.6pp |
| Empty nesters and retirees (60 to 69) | 183 | 3.3% | 8.3% | 16 | 15.2% | 8.3% | +167 | -11.9pp |
| Seniors (70 to 84) | 99 | 1.8% | 6.2% | 10 | 9.5% | 5.6% | +89 | -7.7pp |
| Elderly aged (85 and over) | 9 | 0.2% | 1.0% | 0 | 0.0% | 1.0% | +9 | +0.2pp |
| Total | 5,548 | 100.0% | 100.0% | 105 | 100.0% | 100.0% | +5,443 | 0.0pp |