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 Kings Langley, accounting for 22.2% (2,072 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 2,072 people and 22.2 percentage points.
Section overview
Age structure - Service age groups
Kings Langley - Total persons (Usual residence)
This table summarises service age groups for Kings Langley in 2021 for persons, with comparison against Blacktown (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Kings Langley, with comparison markers for Blacktown (C).
Babies and pre-schoolers (0 to 4)
2021 count
550
% of total
5.9%
Change from 2016
+5.9pp
550
5.9%
+5.9pp
Primary schoolers (5 to 11)
2021 count
937
% of total
10.0%
Change from 2016
+10.0pp
937
10.0%
+10.0pp
Secondary schoolers (12 to 17)
2021 count
747
% of total
8.0%
Change from 2016
+8.0pp
747
8.0%
+8.0pp
Tertiary education and independence (18 to 24)
2021 count
742
% of total
7.9%
Change from 2016
+7.9pp
742
7.9%
+7.9pp
Young workforce (25 to 34)
2021 count
834
% of total
8.9%
Change from 2016
+8.9pp
834
8.9%
+8.9pp
Parents and homebuilders (35 to 49)
2021 count
2,072
% of total
22.2%
Change from 2016
+22.2pp
2,072
22.2%
+22.2pp
Older workers and pre-retirees (50 to 59)
2021 count
1,202
% of total
12.9%
Change from 2016
+12.9pp
1,202
12.9%
+12.9pp
Empty nesters and retirees (60 to 69)
2021 count
1,097
% of total
11.7%
Change from 2016
+11.7pp
1,097
11.7%
+11.7pp
Seniors (70 to 84)
2021 count
1,021
% of total
10.9%
Change from 2016
-49.1pp
1,021
10.9%
-49.1pp
Elderly aged (85 and over)
2021 count
159
% of total
1.7%
Change from 2016
+1.7pp
159
1.7%
+1.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+550
+5.9pp
Primary schoolers (5 to 11)
+937
+10.0pp
Secondary schoolers (12 to 17)
+747
+8.0pp
Tertiary education and independence (18 to 24)
+742
+7.9pp
Young workforce (25 to 34)
+834
+8.9pp
Parents and homebuilders (35 to 49)
+2,072
+22.2pp
Older workers and pre-retirees (50 to 59)
+1,202
+12.9pp
Empty nesters and retirees (60 to 69)
+1,097
+11.7pp
Seniors (70 to 84)
+1,018
-49.1pp
Elderly aged (85 and over)
+159
+1.7pp
Data table
Service age groups for Kings Langley. 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) | 550 | 5.9% | 7.5% | 0 | 0.0% | 8.0% | +550 | +5.9pp |
| Primary schoolers (5 to 11) | 937 | 10.0% | 10.9% | 0 | 0.0% | 10.8% | +937 | +10.0pp |
| Secondary schoolers (12 to 17) | 747 | 8.0% | 8.0% | 0 | 0.0% | 8.2% | +747 | +8.0pp |
| Tertiary education and independence (18 to 24) | 742 | 7.9% | 9.1% | 0 | 0.0% | 9.5% | +742 | +7.9pp |
| Young workforce (25 to 34) | 834 | 8.9% | 14.9% | 0 | 0.0% | 15.5% | +834 | +8.9pp |
| Parents and homebuilders (35 to 49) | 2,072 | 22.2% | 23.4% | 0 | 0.0% | 21.7% | +2,072 | +22.2pp |
| Older workers and pre-retirees (50 to 59) | 1,202 | 12.9% | 10.7% | 0 | 0.0% | 11.4% | +1,202 | +12.9pp |
| Empty nesters and retirees (60 to 69) | 1,097 | 11.7% | 8.2% | 0 | 0.0% | 8.4% | +1,097 | +11.7pp |
| Seniors (70 to 84) | 1,021 | 10.9% | 6.2% | 3 | 60.0% | 5.4% | +1,018 | -49.1pp |
| Elderly aged (85 and over) | 159 | 1.7% | 1.1% | 0 | 0.0% | 1.1% | +159 | +1.7pp |
| Total | 9,354 | 100.0% | 100.0% | 5 | 100.0% | 100.0% | +9,349 | 0.0pp |