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 Dundas (NSW), accounting for 22.3% (1,108 people). This share was lower than Parramatta (C) (23.8%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 1,094 people and 7.9 percentage points.
Section overview
Age structure - Service age groups
Dundas (NSW) - Total persons (Usual residence)
This table summarises service age groups for Dundas (NSW) in 2021 for persons, with comparison against Parramatta (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Dundas (NSW), with comparison markers for Parramatta (C).
Babies and pre-schoolers (0 to 4)
2021 count
332
% of total
6.7%
Change from 2016
+3.6pp
332
6.7%
+3.6pp
Primary schoolers (5 to 11)
2021 count
424
% of total
8.6%
Change from 2016
+5.5pp
424
8.6%
+5.5pp
Secondary schoolers (12 to 17)
2021 count
326
% of total
6.6%
Change from 2016
+0.4pp
326
6.6%
+0.4pp
Tertiary education and independence (18 to 24)
2021 count
463
% of total
9.3%
Change from 2016
+9.3pp
463
9.3%
+9.3pp
Young workforce (25 to 34)
2021 count
711
% of total
14.3%
Change from 2016
+8.1pp
711
14.3%
+8.1pp
Parents and homebuilders (35 to 49)
2021 count
1,108
% of total
22.3%
Change from 2016
+7.9pp
1,108
22.3%
+7.9pp
Older workers and pre-retirees (50 to 59)
2021 count
650
% of total
13.1%
Change from 2016
-1.3pp
650
13.1%
-1.3pp
Empty nesters and retirees (60 to 69)
2021 count
502
% of total
10.1%
Change from 2016
+7.0pp
502
10.1%
+7.0pp
Seniors (70 to 84)
2021 count
369
% of total
7.4%
Change from 2016
+4.3pp
369
7.4%
+4.3pp
Elderly aged (85 and over)
2021 count
63
% of total
1.3%
Change from 2016
+1.3pp
63
1.3%
+1.3pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+329
+3.6pp
Primary schoolers (5 to 11)
+421
+5.5pp
Secondary schoolers (12 to 17)
+320
+0.4pp
Tertiary education and independence (18 to 24)
+463
+9.3pp
Young workforce (25 to 34)
+705
+8.1pp
Parents and homebuilders (35 to 49)
+1,094
+7.9pp
Older workers and pre-retirees (50 to 59)
+636
-1.3pp
Empty nesters and retirees (60 to 69)
+499
+7.0pp
Seniors (70 to 84)
+366
+4.3pp
Elderly aged (85 and over)
+63
+1.3pp
Data table
Service age groups for Dundas (NSW). 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) | 332 | 6.7% | 6.2% | 3 | 3.1% | 7.3% | +329 | +3.6pp |
| Primary schoolers (5 to 11) | 424 | 8.6% | 8.8% | 3 | 3.1% | 8.2% | +421 | +5.5pp |
| Secondary schoolers (12 to 17) | 326 | 6.6% | 5.8% | 6 | 6.2% | 5.9% | +320 | +0.4pp |
| Tertiary education and independence (18 to 24) | 463 | 9.3% | 8.4% | 0 | 0.0% | 8.7% | +463 | +9.3pp |
| Young workforce (25 to 34) | 711 | 14.3% | 19.4% | 6 | 6.2% | 20.2% | +705 | +8.1pp |
| Parents and homebuilders (35 to 49) | 1,108 | 22.3% | 23.8% | 14 | 14.4% | 21.9% | +1,094 | +7.9pp |
| Older workers and pre-retirees (50 to 59) | 650 | 13.1% | 10.3% | 14 | 14.4% | 11.1% | +636 | -1.3pp |
| Empty nesters and retirees (60 to 69) | 502 | 10.1% | 8.6% | 3 | 3.1% | 8.4% | +499 | +7.0pp |
| Seniors (70 to 84) | 369 | 7.4% | 7.0% | 3 | 3.1% | 6.7% | +366 | +4.3pp |
| Elderly aged (85 and over) | 63 | 1.3% | 1.6% | 0 | 0.0% | 1.7% | +63 | +1.3pp |
| Total | 4,959 | 100.0% | 100.0% | 97 | 100.0% | 100.0% | +4,862 | 0.0pp |