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 Constitution Hill, accounting for 20.5% (825 people). This share was lower than Parramatta (C) (23.8%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 56 people and 1.2 percentage points.
Section overview
Age structure - Service age groups
Constitution Hill - Total persons (Usual residence)
This table summarises service age groups for Constitution Hill in 2021 for persons, with comparison against Parramatta (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Constitution Hill, with comparison markers for Parramatta (C).
Babies and pre-schoolers (0 to 4)
2021 count
218
% of total
5.4%
Change from 2016
-1.4pp
218
5.4%
-1.4pp
Primary schoolers (5 to 11)
2021 count
362
% of total
9.0%
Change from 2016
-0.5pp
362
9.0%
-0.5pp
Secondary schoolers (12 to 17)
2021 count
340
% of total
8.4%
Change from 2016
+0.2pp
340
8.4%
+0.2pp
Tertiary education and independence (18 to 24)
2021 count
350
% of total
8.7%
Change from 2016
-0.4pp
350
8.7%
-0.4pp
Young workforce (25 to 34)
2021 count
580
% of total
14.4%
Change from 2016
+1.1pp
580
14.4%
+1.1pp
Parents and homebuilders (35 to 49)
2021 count
825
% of total
20.5%
Change from 2016
-0.9pp
825
20.5%
-0.9pp
Older workers and pre-retirees (50 to 59)
2021 count
504
% of total
12.5%
Change from 2016
+0.5pp
504
12.5%
+0.5pp
Empty nesters and retirees (60 to 69)
2021 count
437
% of total
10.8%
Change from 2016
+1.2pp
437
10.8%
+1.2pp
Seniors (70 to 84)
2021 count
356
% of total
8.8%
Change from 2016
+0.2pp
356
8.8%
+0.2pp
Elderly aged (85 and over)
2021 count
70
% of total
1.7%
Change from 2016
+0.5pp
70
1.7%
+0.5pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-50
-1.4pp
Primary schoolers (5 to 11)
-14
-0.5pp
Secondary schoolers (12 to 17)
+13
+0.2pp
Tertiary education and independence (18 to 24)
-9
-0.4pp
Young workforce (25 to 34)
+51
+1.1pp
Parents and homebuilders (35 to 49)
-24
-0.9pp
Older workers and pre-retirees (50 to 59)
+30
+0.5pp
Empty nesters and retirees (60 to 69)
+56
+1.2pp
Seniors (70 to 84)
+13
+0.2pp
Elderly aged (85 and over)
+21
+0.5pp
Data table
Service age groups for Constitution Hill. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Parramatta (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Parramatta (C)% | Count | % | Parramatta (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 218 | 5.4% | 6.2% | 268 | 6.8% | 7.3% | -50 | -1.4pp |
| Primary schoolers (5 to 11) | 362 | 9.0% | 8.8% | 376 | 9.5% | 8.2% | -14 | -0.5pp |
| Secondary schoolers (12 to 17) | 340 | 8.4% | 5.8% | 327 | 8.2% | 5.9% | +13 | +0.2pp |
| Tertiary education and independence (18 to 24) | 350 | 8.7% | 8.4% | 359 | 9.1% | 8.7% | -9 | -0.4pp |
| Young workforce (25 to 34) | 580 | 14.4% | 19.4% | 529 | 13.3% | 20.2% | +51 | +1.1pp |
| Parents and homebuilders (35 to 49) | 825 | 20.5% | 23.8% | 849 | 21.4% | 21.9% | -24 | -0.9pp |
| Older workers and pre-retirees (50 to 59) | 504 | 12.5% | 10.3% | 474 | 12.0% | 11.1% | +30 | +0.5pp |
| Empty nesters and retirees (60 to 69) | 437 | 10.8% | 8.6% | 381 | 9.6% | 8.4% | +56 | +1.2pp |
| Seniors (70 to 84) | 356 | 8.8% | 7.0% | 343 | 8.6% | 6.7% | +13 | +0.2pp |
| Elderly aged (85 and over) | 70 | 1.7% | 1.6% | 49 | 1.2% | 1.7% | +21 | +0.5pp |
| Total | 4,030 | 100.0% | 100.0% | 3,966 | 100.0% | 100.0% | +64 | 0.0pp |