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 Glendenning, accounting for 23.6% (1,228 people). This share was higher than Blacktown (C) (23.4%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 128 people and 2.4 percentage points.
Section overview
Age structure - Service age groups
Glendenning - Total persons (Usual residence)
This table summarises service age groups for Glendenning in 2021 for persons, with comparison against Blacktown (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Glendenning, with comparison markers for Blacktown (C).
Babies and pre-schoolers (0 to 4)
2021 count
386
% of total
7.4%
Change from 2016
-1.6pp
386
7.4%
-1.6pp
Primary schoolers (5 to 11)
2021 count
656
% of total
12.6%
Change from 2016
0.0pp
656
12.6%
0.0pp
Secondary schoolers (12 to 17)
2021 count
467
% of total
9.0%
Change from 2016
-0.9pp
467
9.0%
-0.9pp
Tertiary education and independence (18 to 24)
2021 count
516
% of total
9.9%
Change from 2016
+0.6pp
516
9.9%
+0.6pp
Young workforce (25 to 34)
2021 count
711
% of total
13.7%
Change from 2016
-1.9pp
711
13.7%
-1.9pp
Parents and homebuilders (35 to 49)
2021 count
1,228
% of total
23.6%
Change from 2016
-1.3pp
1,228
23.6%
-1.3pp
Older workers and pre-retirees (50 to 59)
2021 count
612
% of total
11.8%
Change from 2016
+1.0pp
612
11.8%
+1.0pp
Empty nesters and retirees (60 to 69)
2021 count
386
% of total
7.4%
Change from 2016
+2.4pp
386
7.4%
+2.4pp
Seniors (70 to 84)
2021 count
182
% of total
3.5%
Change from 2016
+0.8pp
182
3.5%
+0.8pp
Elderly aged (85 and over)
2021 count
22
% of total
0.4%
Change from 2016
+0.2pp
22
0.4%
+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)
-76
-1.6pp
Primary schoolers (5 to 11)
+9
0.0pp
Secondary schoolers (12 to 17)
-42
-0.9pp
Tertiary education and independence (18 to 24)
+37
+0.6pp
Young workforce (25 to 34)
-91
-1.9pp
Parents and homebuilders (35 to 49)
-48
-1.3pp
Older workers and pre-retirees (50 to 59)
+60
+1.0pp
Empty nesters and retirees (60 to 69)
+128
+2.4pp
Seniors (70 to 84)
+41
+0.8pp
Elderly aged (85 and over)
+12
+0.2pp
Data table
Service age groups for Glendenning. 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) | 386 | 7.4% | 7.5% | 462 | 9.0% | 8.0% | -76 | -1.6pp |
| Primary schoolers (5 to 11) | 656 | 12.6% | 10.9% | 647 | 12.6% | 10.8% | +9 | 0.0pp |
| Secondary schoolers (12 to 17) | 467 | 9.0% | 8.0% | 509 | 9.9% | 8.2% | -42 | -0.9pp |
| Tertiary education and independence (18 to 24) | 516 | 9.9% | 9.1% | 479 | 9.3% | 9.5% | +37 | +0.6pp |
| Young workforce (25 to 34) | 711 | 13.7% | 14.9% | 802 | 15.6% | 15.5% | -91 | -1.9pp |
| Parents and homebuilders (35 to 49) | 1,228 | 23.6% | 23.4% | 1,276 | 24.9% | 21.7% | -48 | -1.3pp |
| Older workers and pre-retirees (50 to 59) | 612 | 11.8% | 10.7% | 552 | 10.8% | 11.4% | +60 | +1.0pp |
| Empty nesters and retirees (60 to 69) | 386 | 7.4% | 8.2% | 258 | 5.0% | 8.4% | +128 | +2.4pp |
| Seniors (70 to 84) | 182 | 3.5% | 6.2% | 141 | 2.7% | 5.4% | +41 | +0.8pp |
| Elderly aged (85 and over) | 22 | 0.4% | 1.1% | 10 | 0.2% | 1.1% | +12 | +0.2pp |
| Total | 5,196 | 100.0% | 100.0% | 5,131 | 100.0% | 100.0% | +65 | 0.0pp |