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 Leonay, accounting for 21.3% (551 people). This share was higher than Penrith (C) (21%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which decreased by 89 people and 3.8 percentage points.
Section overview
Age structure - Service age groups
Leonay - Total persons (Usual residence)
This table summarises service age groups for Leonay in 2021 for persons, with comparison against Penrith (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Leonay, with comparison markers for Penrith (C).
Babies and pre-schoolers (0 to 4)
2021 count
127
% of total
4.9%
Change from 2016
-1.1pp
127
4.9%
-1.1pp
Primary schoolers (5 to 11)
2021 count
255
% of total
9.9%
Change from 2016
-1.1pp
255
9.9%
-1.1pp
Secondary schoolers (12 to 17)
2021 count
250
% of total
9.7%
Change from 2016
+1.6pp
250
9.7%
+1.6pp
Tertiary education and independence (18 to 24)
2021 count
199
% of total
7.7%
Change from 2016
+0.2pp
199
7.7%
+0.2pp
Young workforce (25 to 34)
2021 count
217
% of total
8.4%
Change from 2016
-0.3pp
217
8.4%
-0.3pp
Parents and homebuilders (35 to 49)
2021 count
551
% of total
21.3%
Change from 2016
-0.7pp
551
21.3%
-0.7pp
Older workers and pre-retirees (50 to 59)
2021 count
343
% of total
13.3%
Change from 2016
+0.9pp
343
13.3%
+0.9pp
Empty nesters and retirees (60 to 69)
2021 count
258
% of total
10.0%
Change from 2016
-3.8pp
258
10.0%
-3.8pp
Seniors (70 to 84)
2021 count
327
% of total
12.7%
Change from 2016
+3.0pp
327
12.7%
+3.0pp
Elderly aged (85 and over)
2021 count
33
% of total
1.3%
Change from 2016
0.0pp
33
1.3%
0.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-25
-1.1pp
Primary schoolers (5 to 11)
-22
-1.1pp
Secondary schoolers (12 to 17)
+46
+1.6pp
Tertiary education and independence (18 to 24)
+11
+0.2pp
Young workforce (25 to 34)
-2
-0.3pp
Parents and homebuilders (35 to 49)
-3
-0.7pp
Older workers and pre-retirees (50 to 59)
+32
+0.9pp
Empty nesters and retirees (60 to 69)
-89
-3.8pp
Seniors (70 to 84)
+83
+3.0pp
Elderly aged (85 and over)
+1
0.0pp
Data table
Service age groups for Leonay. 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) | 127 | 4.9% | 7.2% | 152 | 6.0% | 7.4% | -25 | -1.1pp |
| Primary schoolers (5 to 11) | 255 | 9.9% | 9.9% | 277 | 11.0% | 9.8% | -22 | -1.1pp |
| Secondary schoolers (12 to 17) | 250 | 9.7% | 7.8% | 204 | 8.1% | 7.8% | +46 | +1.6pp |
| Tertiary education and independence (18 to 24) | 199 | 7.7% | 9.3% | 188 | 7.5% | 9.9% | +11 | +0.2pp |
| Young workforce (25 to 34) | 217 | 8.4% | 15.2% | 219 | 8.7% | 15.4% | -2 | -0.3pp |
| Parents and homebuilders (35 to 49) | 551 | 21.3% | 21.0% | 554 | 22.0% | 20.5% | -3 | -0.7pp |
| Older workers and pre-retirees (50 to 59) | 343 | 13.3% | 11.4% | 311 | 12.4% | 12.3% | +32 | +0.9pp |
| Empty nesters and retirees (60 to 69) | 258 | 10.0% | 9.5% | 347 | 13.8% | 9.7% | -89 | -3.8pp |
| Seniors (70 to 84) | 327 | 12.7% | 7.5% | 244 | 9.7% | 6.0% | +83 | +3.0pp |
| Elderly aged (85 and over) | 33 | 1.3% | 1.2% | 32 | 1.3% | 1.2% | +1 | 0.0pp |
| Total | 2,582 | 100.0% | 100.0% | 2,518 | 100.0% | 100.0% | +64 | 0.0pp |