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 Heidelberg, accounting for 23.1% (1,703 people). This share was higher than Banyule (C) (21.3%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 344 people and 1.3 percentage points.
Section overview
Age structure - Service age groups
Heidelberg - Total persons (Usual residence)
This table summarises service age groups for Heidelberg in 2021 for persons, with comparison against Banyule (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Heidelberg, with comparison markers for Banyule (C).
Babies and pre-schoolers (0 to 4)
2021 count
413
% of total
5.6%
Change from 2016
-1.9pp
413
5.6%
-1.9pp
Primary schoolers (5 to 11)
2021 count
600
% of total
8.2%
Change from 2016
0.0pp
600
8.2%
0.0pp
Secondary schoolers (12 to 17)
2021 count
420
% of total
5.7%
Change from 2016
+0.7pp
420
5.7%
+0.7pp
Tertiary education and independence (18 to 24)
2021 count
483
% of total
6.6%
Change from 2016
-1.1pp
483
6.6%
-1.1pp
Young workforce (25 to 34)
2021 count
1,239
% of total
16.8%
Change from 2016
-0.9pp
1,239
16.8%
-0.9pp
Parents and homebuilders (35 to 49)
2021 count
1,703
% of total
23.1%
Change from 2016
+1.3pp
1,703
23.1%
+1.3pp
Older workers and pre-retirees (50 to 59)
2021 count
788
% of total
10.7%
Change from 2016
-0.5pp
788
10.7%
-0.5pp
Empty nesters and retirees (60 to 69)
2021 count
713
% of total
9.7%
Change from 2016
+0.8pp
713
9.7%
+0.8pp
Seniors (70 to 84)
2021 count
766
% of total
10.4%
Change from 2016
+1.1pp
766
10.4%
+1.1pp
Elderly aged (85 and over)
2021 count
233
% of total
3.2%
Change from 2016
+0.7pp
233
3.2%
+0.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-54
-1.9pp
Primary schoolers (5 to 11)
+87
0.0pp
Secondary schoolers (12 to 17)
+108
+0.7pp
Tertiary education and independence (18 to 24)
+4
-1.1pp
Young workforce (25 to 34)
+138
-0.9pp
Parents and homebuilders (35 to 49)
+344
+1.3pp
Older workers and pre-retirees (50 to 59)
+92
-0.5pp
Empty nesters and retirees (60 to 69)
+156
+0.8pp
Seniors (70 to 84)
+188
+1.1pp
Elderly aged (85 and over)
+77
+0.7pp
Data table
Service age groups for Heidelberg. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Banyule (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Banyule (C)% | Count | % | Banyule (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 413 | 5.6% | 5.6% | 467 | 7.5% | 6.4% | -54 | -1.9pp |
| Primary schoolers (5 to 11) | 600 | 8.2% | 8.6% | 513 | 8.2% | 8.5% | +87 | 0.0pp |
| Secondary schoolers (12 to 17) | 420 | 5.7% | 6.9% | 312 | 5.0% | 6.5% | +108 | +0.7pp |
| Tertiary education and independence (18 to 24) | 483 | 6.6% | 7.7% | 479 | 7.7% | 8.4% | +4 | -1.1pp |
| Young workforce (25 to 34) | 1,239 | 16.8% | 12.9% | 1,101 | 17.7% | 13.3% | +138 | -0.9pp |
| Parents and homebuilders (35 to 49) | 1,703 | 23.1% | 21.3% | 1,359 | 21.8% | 21.1% | +344 | +1.3pp |
| Older workers and pre-retirees (50 to 59) | 788 | 10.7% | 12.4% | 696 | 11.2% | 12.7% | +92 | -0.5pp |
| Empty nesters and retirees (60 to 69) | 713 | 9.7% | 11.0% | 557 | 8.9% | 11.0% | +156 | +0.8pp |
| Seniors (70 to 84) | 766 | 10.4% | 11.0% | 578 | 9.3% | 9.4% | +188 | +1.1pp |
| Elderly aged (85 and over) | 233 | 3.2% | 2.7% | 156 | 2.5% | 2.7% | +77 | +0.7pp |
| Total | 7,360 | 100.0% | 100.0% | 6,225 | 100.0% | 100.0% | +1,135 | 0.0pp |