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 Shalvey, accounting for 17.5% (603 people). This share was lower than Blacktown (C) (23.4%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 89 people and 2.6 percentage points.
Section overview
Age structure - Service age groups
Shalvey - Total persons (Usual residence)
This table summarises service age groups for Shalvey in 2021 for persons, with comparison against Blacktown (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Shalvey, with comparison markers for Blacktown (C).
Babies and pre-schoolers (0 to 4)
2021 count
272
% of total
7.9%
Change from 2016
-0.4pp
272
7.9%
-0.4pp
Primary schoolers (5 to 11)
2021 count
408
% of total
11.8%
Change from 2016
-0.7pp
408
11.8%
-0.7pp
Secondary schoolers (12 to 17)
2021 count
361
% of total
10.4%
Change from 2016
0.0pp
361
10.4%
0.0pp
Tertiary education and independence (18 to 24)
2021 count
357
% of total
10.3%
Change from 2016
-0.5pp
357
10.3%
-0.5pp
Young workforce (25 to 34)
2021 count
439
% of total
12.7%
Change from 2016
-0.3pp
439
12.7%
-0.3pp
Parents and homebuilders (35 to 49)
2021 count
603
% of total
17.5%
Change from 2016
+0.2pp
603
17.5%
+0.2pp
Older workers and pre-retirees (50 to 59)
2021 count
383
% of total
11.1%
Change from 2016
+0.4pp
383
11.1%
+0.4pp
Empty nesters and retirees (60 to 69)
2021 count
337
% of total
9.8%
Change from 2016
-1.0pp
337
9.8%
-1.0pp
Seniors (70 to 84)
2021 count
276
% of total
8.0%
Change from 2016
+2.6pp
276
8.0%
+2.6pp
Elderly aged (85 and over)
2021 count
10
% of total
0.3%
Change from 2016
-0.2pp
10
0.3%
-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)
-17
-0.4pp
Primary schoolers (5 to 11)
-25
-0.7pp
Secondary schoolers (12 to 17)
+1
0.0pp
Tertiary education and independence (18 to 24)
-18
-0.5pp
Young workforce (25 to 34)
-13
-0.3pp
Parents and homebuilders (35 to 49)
+3
+0.2pp
Older workers and pre-retirees (50 to 59)
+11
+0.4pp
Empty nesters and retirees (60 to 69)
-36
-1.0pp
Seniors (70 to 84)
+89
+2.6pp
Elderly aged (85 and over)
-9
-0.2pp
Data table
Service age groups for Shalvey. 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) | 272 | 7.9% | 7.5% | 289 | 8.3% | 8.0% | -17 | -0.4pp |
| Primary schoolers (5 to 11) | 408 | 11.8% | 10.9% | 433 | 12.5% | 10.8% | -25 | -0.7pp |
| Secondary schoolers (12 to 17) | 361 | 10.4% | 8.0% | 360 | 10.4% | 8.2% | +1 | 0.0pp |
| Tertiary education and independence (18 to 24) | 357 | 10.3% | 9.1% | 375 | 10.8% | 9.5% | -18 | -0.5pp |
| Young workforce (25 to 34) | 439 | 12.7% | 14.9% | 452 | 13.0% | 15.5% | -13 | -0.3pp |
| Parents and homebuilders (35 to 49) | 603 | 17.5% | 23.4% | 600 | 17.3% | 21.7% | +3 | +0.2pp |
| Older workers and pre-retirees (50 to 59) | 383 | 11.1% | 10.7% | 372 | 10.7% | 11.4% | +11 | +0.4pp |
| Empty nesters and retirees (60 to 69) | 337 | 9.8% | 8.2% | 373 | 10.8% | 8.4% | -36 | -1.0pp |
| Seniors (70 to 84) | 276 | 8.0% | 6.2% | 187 | 5.4% | 5.4% | +89 | +2.6pp |
| Elderly aged (85 and over) | 10 | 0.3% | 1.1% | 19 | 0.5% | 1.1% | -9 | -0.2pp |
| Total | 3,455 | 100.0% | 100.0% | 3,467 | 100.0% | 100.0% | -12 | 0.0pp |