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 Prospect (NSW), accounting for 21.8% (1,131 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 181 people and 1.4 percentage points.
Section overview
Age structure - Service age groups
Prospect (NSW) - Total persons (Usual residence)
This table summarises service age groups for Prospect (NSW) in 2021 for persons, with comparison against Blacktown (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Prospect (NSW), with comparison markers for Blacktown (C).
Babies and pre-schoolers (0 to 4)
2021 count
338
% of total
6.5%
Change from 2016
+0.3pp
338
6.5%
+0.3pp
Primary schoolers (5 to 11)
2021 count
429
% of total
8.3%
Change from 2016
-0.7pp
429
8.3%
-0.7pp
Secondary schoolers (12 to 17)
2021 count
380
% of total
7.3%
Change from 2016
-0.7pp
380
7.3%
-0.7pp
Tertiary education and independence (18 to 24)
2021 count
464
% of total
8.9%
Change from 2016
+0.1pp
464
8.9%
+0.1pp
Young workforce (25 to 34)
2021 count
725
% of total
14.0%
Change from 2016
0.0pp
725
14.0%
0.0pp
Parents and homebuilders (35 to 49)
2021 count
1,131
% of total
21.8%
Change from 2016
+1.4pp
1,131
21.8%
+1.4pp
Older workers and pre-retirees (50 to 59)
2021 count
633
% of total
12.2%
Change from 2016
-1.3pp
633
12.2%
-1.3pp
Empty nesters and retirees (60 to 69)
2021 count
593
% of total
11.4%
Change from 2016
-0.6pp
593
11.4%
-0.6pp
Seniors (70 to 84)
2021 count
454
% of total
8.8%
Change from 2016
+2.0pp
454
8.8%
+2.0pp
Elderly aged (85 and over)
2021 count
33
% of total
0.6%
Change from 2016
-0.2pp
33
0.6%
-0.2pp
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
+0.3pp
Primary schoolers (5 to 11)
+9
-0.7pp
Secondary schoolers (12 to 17)
+6
-0.7pp
Tertiary education and independence (18 to 24)
+53
+0.1pp
Young workforce (25 to 34)
+72
0.0pp
Parents and homebuilders (35 to 49)
+181
+1.4pp
Older workers and pre-retirees (50 to 59)
+2
-1.3pp
Empty nesters and retirees (60 to 69)
+32
-0.6pp
Seniors (70 to 84)
+136
+2.0pp
Elderly aged (85 and over)
-5
-0.2pp
Data table
Service age groups for Prospect (NSW). 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) | 338 | 6.5% | 7.5% | 288 | 6.2% | 8.0% | +50 | +0.3pp |
| Primary schoolers (5 to 11) | 429 | 8.3% | 10.9% | 420 | 9.0% | 10.8% | +9 | -0.7pp |
| Secondary schoolers (12 to 17) | 380 | 7.3% | 8.0% | 374 | 8.0% | 8.2% | +6 | -0.7pp |
| Tertiary education and independence (18 to 24) | 464 | 8.9% | 9.1% | 411 | 8.8% | 9.5% | +53 | +0.1pp |
| Young workforce (25 to 34) | 725 | 14.0% | 14.9% | 653 | 14.0% | 15.5% | +72 | 0.0pp |
| Parents and homebuilders (35 to 49) | 1,131 | 21.8% | 23.4% | 950 | 20.4% | 21.7% | +181 | +1.4pp |
| Older workers and pre-retirees (50 to 59) | 633 | 12.2% | 10.7% | 631 | 13.5% | 11.4% | +2 | -1.3pp |
| Empty nesters and retirees (60 to 69) | 593 | 11.4% | 8.2% | 561 | 12.0% | 8.4% | +32 | -0.6pp |
| Seniors (70 to 84) | 454 | 8.8% | 6.2% | 318 | 6.8% | 5.4% | +136 | +2.0pp |
| Elderly aged (85 and over) | 33 | 0.6% | 1.1% | 38 | 0.8% | 1.1% | -5 | -0.2pp |
| Total | 5,187 | 100.0% | 100.0% | 4,660 | 100.0% | 100.0% | +527 | 0.0pp |