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, Young workforce (25 to 34) was the most common category among residents in Green Fields, accounting for 20.6% (35 people). This share was higher than Salisbury (C) (14.6%). Since 2016, the biggest change was in Young workforce (25 to 34), which increased by 29 people and 3.9 percentage points.
Section overview
Age structure - Service age groups
Green Fields - Total persons (Usual residence)
This table summarises service age groups for Green Fields in 2021 for persons, with comparison against Salisbury (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Green Fields, with comparison markers for Salisbury (C).
Babies and pre-schoolers (0 to 4)
2021 count
16
% of total
9.4%
Change from 2016
+9.4pp
16
9.4%
+9.4pp
Primary schoolers (5 to 11)
2021 count
25
% of total
14.7%
Change from 2016
+14.7pp
25
14.7%
+14.7pp
Secondary schoolers (12 to 17)
2021 count
11
% of total
6.5%
Change from 2016
+6.5pp
11
6.5%
+6.5pp
Tertiary education and independence (18 to 24)
2021 count
17
% of total
10.0%
Change from 2016
+1.7pp
17
10.0%
+1.7pp
Young workforce (25 to 34)
2021 count
35
% of total
20.6%
Change from 2016
+3.9pp
35
20.6%
+3.9pp
Parents and homebuilders (35 to 49)
2021 count
28
% of total
16.5%
Change from 2016
+8.2pp
28
16.5%
+8.2pp
Older workers and pre-retirees (50 to 59)
2021 count
22
% of total
12.9%
Change from 2016
-3.8pp
22
12.9%
-3.8pp
Empty nesters and retirees (60 to 69)
2021 count
23
% of total
13.5%
Change from 2016
+13.5pp
23
13.5%
+13.5pp
Seniors (70 to 84)
2021 count
5
% of total
2.9%
Change from 2016
+2.9pp
5
2.9%
+2.9pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
0.0pp
0
0.0%
0.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+16
+9.4pp
Primary schoolers (5 to 11)
+25
+14.7pp
Secondary schoolers (12 to 17)
+11
+6.5pp
Tertiary education and independence (18 to 24)
+14
+1.7pp
Young workforce (25 to 34)
+29
+3.9pp
Parents and homebuilders (35 to 49)
+25
+8.2pp
Older workers and pre-retirees (50 to 59)
+16
-3.8pp
Empty nesters and retirees (60 to 69)
+23
+13.5pp
Seniors (70 to 84)
+5
+2.9pp
Elderly aged (85 and over)
0
0.0pp
Data table
Service age groups for Green Fields. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Salisbury (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Salisbury (C)% | Count | % | Salisbury (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 16 | 9.4% | 6.3% | 0 | 0.0% | 6.9% | +16 | +9.4pp |
| Primary schoolers (5 to 11) | 25 | 14.7% | 9.3% | 0 | 0.0% | 9.2% | +25 | +14.7pp |
| Secondary schoolers (12 to 17) | 11 | 6.5% | 7.4% | 0 | 0.0% | 7.2% | +11 | +6.5pp |
| Tertiary education and independence (18 to 24) | 17 | 10.0% | 9.4% | 3 | 8.3% | 9.8% | +14 | +1.7pp |
| Young workforce (25 to 34) | 35 | 20.6% | 14.6% | 6 | 16.7% | 15.3% | +29 | +3.9pp |
| Parents and homebuilders (35 to 49) | 28 | 16.5% | 20.1% | 3 | 8.3% | 19.8% | +25 | +8.2pp |
| Older workers and pre-retirees (50 to 59) | 22 | 12.9% | 12.0% | 6 | 16.7% | 12.3% | +16 | -3.8pp |
| Empty nesters and retirees (60 to 69) | 23 | 13.5% | 10.0% | 0 | 0.0% | 9.9% | +23 | +13.5pp |
| Seniors (70 to 84) | 5 | 2.9% | 9.1% | 0 | 0.0% | 7.9% | +5 | +2.9pp |
| Elderly aged (85 and over) | 0 | 0.0% | 1.8% | 0 | 0.0% | 1.6% | 0 | 0.0pp |
| Total | 170 | 100.0% | 100.0% | 36 | 100.0% | 100.0% | +134 | 0.0pp |