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 Briar Hill, accounting for 21.8% (703 people). This share was higher than Banyule (C) (21.3%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 67 people and 1.8 percentage points.
Section overview
Age structure - Service age groups
Briar Hill - Total persons (Usual residence)
This table summarises service age groups for Briar Hill in 2021 for persons, with comparison against Banyule (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Briar Hill, with comparison markers for Banyule (C).
Babies and pre-schoolers (0 to 4)
2021 count
217
% of total
6.7%
Change from 2016
-0.3pp
217
6.7%
-0.3pp
Primary schoolers (5 to 11)
2021 count
301
% of total
9.3%
Change from 2016
+1.3pp
301
9.3%
+1.3pp
Secondary schoolers (12 to 17)
2021 count
206
% of total
6.4%
Change from 2016
+0.4pp
206
6.4%
+0.4pp
Tertiary education and independence (18 to 24)
2021 count
174
% of total
5.4%
Change from 2016
-1.1pp
174
5.4%
-1.1pp
Young workforce (25 to 34)
2021 count
358
% of total
11.1%
Change from 2016
-1.4pp
358
11.1%
-1.4pp
Parents and homebuilders (35 to 49)
2021 count
703
% of total
21.8%
Change from 2016
+0.1pp
703
21.8%
+0.1pp
Older workers and pre-retirees (50 to 59)
2021 count
402
% of total
12.5%
Change from 2016
-0.7pp
402
12.5%
-0.7pp
Empty nesters and retirees (60 to 69)
2021 count
361
% of total
11.2%
Change from 2016
-1.4pp
361
11.2%
-1.4pp
Seniors (70 to 84)
2021 count
428
% of total
13.3%
Change from 2016
+1.8pp
428
13.3%
+1.8pp
Elderly aged (85 and over)
2021 count
50
% of total
1.6%
Change from 2016
+0.2pp
50
1.6%
+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)
-4
-0.3pp
Primary schoolers (5 to 11)
+48
+1.3pp
Secondary schoolers (12 to 17)
+16
+0.4pp
Tertiary education and independence (18 to 24)
-32
-1.1pp
Young workforce (25 to 34)
-36
-1.4pp
Parents and homebuilders (35 to 49)
+19
+0.1pp
Older workers and pre-retirees (50 to 59)
-13
-0.7pp
Empty nesters and retirees (60 to 69)
-37
-1.4pp
Seniors (70 to 84)
+67
+1.8pp
Elderly aged (85 and over)
+6
+0.2pp
Data table
Service age groups for Briar Hill. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Banyule (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Banyule (C)% | Count | % | Banyule (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 217 | 6.7% | 5.6% | 221 | 7.0% | 6.4% | -4 | -0.3pp |
| Primary schoolers (5 to 11) | 301 | 9.3% | 8.6% | 253 | 8.0% | 8.5% | +48 | +1.3pp |
| Secondary schoolers (12 to 17) | 206 | 6.4% | 6.9% | 190 | 6.0% | 6.5% | +16 | +0.4pp |
| Tertiary education and independence (18 to 24) | 174 | 5.4% | 7.7% | 206 | 6.5% | 8.4% | -32 | -1.1pp |
| Young workforce (25 to 34) | 358 | 11.1% | 12.9% | 394 | 12.5% | 13.3% | -36 | -1.4pp |
| Parents and homebuilders (35 to 49) | 703 | 21.8% | 21.3% | 684 | 21.7% | 21.1% | +19 | +0.1pp |
| Older workers and pre-retirees (50 to 59) | 402 | 12.5% | 12.4% | 415 | 13.2% | 12.7% | -13 | -0.7pp |
| Empty nesters and retirees (60 to 69) | 361 | 11.2% | 11.0% | 398 | 12.6% | 11.0% | -37 | -1.4pp |
| Seniors (70 to 84) | 428 | 13.3% | 11.0% | 361 | 11.5% | 9.4% | +67 | +1.8pp |
| Elderly aged (85 and over) | 50 | 1.6% | 2.7% | 44 | 1.4% | 2.7% | +6 | +0.2pp |
| Total | 3,220 | 100.0% | 100.0% | 3,152 | 100.0% | 100.0% | +68 | 0.0pp |