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 Erskine Park, accounting for 19% (1,233 people). This share was lower than Penrith (C) (21%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 713 people, while its share fell by 1.1 percentage points.
Section overview
Age structure - Service age groups
Erskine Park - Total persons (Usual residence)
This table summarises service age groups for Erskine Park in 2021 for persons, with comparison against Penrith (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Erskine Park, with comparison markers for Penrith (C).
Babies and pre-schoolers (0 to 4)
2021 count
379
% of total
5.8%
Change from 2016
-1.6pp
379
5.8%
-1.6pp
Primary schoolers (5 to 11)
2021 count
580
% of total
8.9%
Change from 2016
-1.1pp
580
8.9%
-1.1pp
Secondary schoolers (12 to 17)
2021 count
542
% of total
8.4%
Change from 2016
+1.2pp
542
8.4%
+1.2pp
Tertiary education and independence (18 to 24)
2021 count
668
% of total
10.3%
Change from 2016
+1.1pp
668
10.3%
+1.1pp
Young workforce (25 to 34)
2021 count
920
% of total
14.2%
Change from 2016
-2.9pp
920
14.2%
-2.9pp
Parents and homebuilders (35 to 49)
2021 count
1,233
% of total
19.0%
Change from 2016
-1.1pp
1,233
19.0%
-1.1pp
Older workers and pre-retirees (50 to 59)
2021 count
1,046
% of total
16.1%
Change from 2016
+3.1pp
1,046
16.1%
+3.1pp
Empty nesters and retirees (60 to 69)
2021 count
763
% of total
11.8%
Change from 2016
+1.0pp
763
11.8%
+1.0pp
Seniors (70 to 84)
2021 count
335
% of total
5.2%
Change from 2016
+0.8pp
335
5.2%
+0.8pp
Elderly aged (85 and over)
2021 count
46
% of total
0.7%
Change from 2016
+0.3pp
46
0.7%
+0.3pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+188
-1.6pp
Primary schoolers (5 to 11)
+321
-1.1pp
Secondary schoolers (12 to 17)
+355
+1.2pp
Tertiary education and independence (18 to 24)
+431
+1.1pp
Young workforce (25 to 34)
+479
-2.9pp
Parents and homebuilders (35 to 49)
+713
-1.1pp
Older workers and pre-retirees (50 to 59)
+710
+3.1pp
Empty nesters and retirees (60 to 69)
+485
+1.0pp
Seniors (70 to 84)
+221
+0.8pp
Elderly aged (85 and over)
+35
+0.3pp
Data table
Service age groups for Erskine Park. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Penrith (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Penrith (C)% | Count | % | Penrith (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 379 | 5.8% | 7.2% | 191 | 7.4% | 7.4% | +188 | -1.6pp |
| Primary schoolers (5 to 11) | 580 | 8.9% | 9.9% | 259 | 10.0% | 9.8% | +321 | -1.1pp |
| Secondary schoolers (12 to 17) | 542 | 8.4% | 7.8% | 187 | 7.2% | 7.8% | +355 | +1.2pp |
| Tertiary education and independence (18 to 24) | 668 | 10.3% | 9.3% | 237 | 9.2% | 9.9% | +431 | +1.1pp |
| Young workforce (25 to 34) | 920 | 14.2% | 15.2% | 441 | 17.1% | 15.4% | +479 | -2.9pp |
| Parents and homebuilders (35 to 49) | 1,233 | 19.0% | 21.0% | 520 | 20.1% | 20.5% | +713 | -1.1pp |
| Older workers and pre-retirees (50 to 59) | 1,046 | 16.1% | 11.4% | 336 | 13.0% | 12.3% | +710 | +3.1pp |
| Empty nesters and retirees (60 to 69) | 763 | 11.8% | 9.5% | 278 | 10.8% | 9.7% | +485 | +1.0pp |
| Seniors (70 to 84) | 335 | 5.2% | 7.5% | 114 | 4.4% | 6.0% | +221 | +0.8pp |
| Elderly aged (85 and over) | 46 | 0.7% | 1.2% | 11 | 0.4% | 1.2% | +35 | +0.3pp |
| Total | 6,486 | 100.0% | 100.0% | 2,582 | 100.0% | 100.0% | +3,904 | 0.0pp |