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 Emerton, accounting for 16.3% (375 people). This share was lower than Blacktown (C) (23.4%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 336 people, while its share fell by 6.2 percentage points.
Section overview
Age structure - Service age groups
Emerton - Total persons (Usual residence)
This table summarises service age groups for Emerton in 2021 for persons, with comparison against Blacktown (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Emerton, with comparison markers for Blacktown (C).
Babies and pre-schoolers (0 to 4)
2021 count
177
% of total
7.7%
Change from 2016
+7.7pp
177
7.7%
+7.7pp
Primary schoolers (5 to 11)
2021 count
269
% of total
11.7%
Change from 2016
+5.9pp
269
11.7%
+5.9pp
Secondary schoolers (12 to 17)
2021 count
225
% of total
9.8%
Change from 2016
-5.2pp
225
9.8%
-5.2pp
Tertiary education and independence (18 to 24)
2021 count
235
% of total
10.2%
Change from 2016
+6.2pp
235
10.2%
+6.2pp
Young workforce (25 to 34)
2021 count
331
% of total
14.4%
Change from 2016
+10.9pp
331
14.4%
+10.9pp
Parents and homebuilders (35 to 49)
2021 count
375
% of total
16.3%
Change from 2016
-6.2pp
375
16.3%
-6.2pp
Older workers and pre-retirees (50 to 59)
2021 count
264
% of total
11.5%
Change from 2016
-1.2pp
264
11.5%
-1.2pp
Empty nesters and retirees (60 to 69)
2021 count
209
% of total
9.1%
Change from 2016
-10.6pp
209
9.1%
-10.6pp
Seniors (70 to 84)
2021 count
208
% of total
9.1%
Change from 2016
-4.2pp
208
9.1%
-4.2pp
Elderly aged (85 and over)
2021 count
19
% of total
0.8%
Change from 2016
-0.9pp
19
0.8%
-0.9pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+177
+7.7pp
Primary schoolers (5 to 11)
+259
+5.9pp
Secondary schoolers (12 to 17)
+199
-5.2pp
Tertiary education and independence (18 to 24)
+228
+6.2pp
Young workforce (25 to 34)
+325
+10.9pp
Parents and homebuilders (35 to 49)
+336
-6.2pp
Older workers and pre-retirees (50 to 59)
+242
-1.2pp
Empty nesters and retirees (60 to 69)
+175
-10.6pp
Seniors (70 to 84)
+185
-4.2pp
Elderly aged (85 and over)
+16
-0.9pp
Data table
Service age groups for Emerton. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Blacktown (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Blacktown (C)% | Count | % | Blacktown (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 177 | 7.7% | 7.5% | 0 | 0.0% | 8.0% | +177 | +7.7pp |
| Primary schoolers (5 to 11) | 269 | 11.7% | 10.9% | 10 | 5.8% | 10.8% | +259 | +5.9pp |
| Secondary schoolers (12 to 17) | 225 | 9.8% | 8.0% | 26 | 15.0% | 8.2% | +199 | -5.2pp |
| Tertiary education and independence (18 to 24) | 235 | 10.2% | 9.1% | 7 | 4.0% | 9.5% | +228 | +6.2pp |
| Young workforce (25 to 34) | 331 | 14.4% | 14.9% | 6 | 3.5% | 15.5% | +325 | +10.9pp |
| Parents and homebuilders (35 to 49) | 375 | 16.3% | 23.4% | 39 | 22.5% | 21.7% | +336 | -6.2pp |
| Older workers and pre-retirees (50 to 59) | 264 | 11.5% | 10.7% | 22 | 12.7% | 11.4% | +242 | -1.2pp |
| Empty nesters and retirees (60 to 69) | 209 | 9.1% | 8.2% | 34 | 19.7% | 8.4% | +175 | -10.6pp |
| Seniors (70 to 84) | 208 | 9.1% | 6.2% | 23 | 13.3% | 5.4% | +185 | -4.2pp |
| Elderly aged (85 and over) | 19 | 0.8% | 1.1% | 3 | 1.7% | 1.1% | +16 | -0.9pp |
| Total | 2,295 | 100.0% | 100.0% | 173 | 100.0% | 100.0% | +2,122 | 0.0pp |