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 Welby, accounting for 17.7% (135 people). This share was higher than Wingecarribee (A) (16.3%). Since 2016, the biggest change was in Young workforce (25 to 34), which decreased by 17 people and 2.3 percentage points.
Section overview
Age structure - Service age groups
Welby - Total persons (Usual residence)
This table summarises service age groups for Welby in 2021 for persons, with comparison against Wingecarribee (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Welby, with comparison markers for Wingecarribee (A).
Babies and pre-schoolers (0 to 4)
2021 count
38
% of total
5.0%
Change from 2016
+0.5pp
38
5.0%
+0.5pp
Primary schoolers (5 to 11)
2021 count
72
% of total
9.4%
Change from 2016
-1.2pp
72
9.4%
-1.2pp
Secondary schoolers (12 to 17)
2021 count
66
% of total
8.6%
Change from 2016
+0.9pp
66
8.6%
+0.9pp
Tertiary education and independence (18 to 24)
2021 count
73
% of total
9.6%
Change from 2016
+0.4pp
73
9.6%
+0.4pp
Young workforce (25 to 34)
2021 count
62
% of total
8.1%
Change from 2016
-2.3pp
62
8.1%
-2.3pp
Parents and homebuilders (35 to 49)
2021 count
135
% of total
17.7%
Change from 2016
-1.2pp
135
17.7%
-1.2pp
Older workers and pre-retirees (50 to 59)
2021 count
102
% of total
13.4%
Change from 2016
+0.9pp
102
13.4%
+0.9pp
Empty nesters and retirees (60 to 69)
2021 count
105
% of total
13.7%
Change from 2016
+0.9pp
105
13.7%
+0.9pp
Seniors (70 to 84)
2021 count
101
% of total
13.2%
Change from 2016
+0.9pp
101
13.2%
+0.9pp
Elderly aged (85 and over)
2021 count
18
% of total
2.4%
Change from 2016
+1.1pp
18
2.4%
+1.1pp
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
+0.5pp
Primary schoolers (5 to 11)
-8
-1.2pp
Secondary schoolers (12 to 17)
+8
+0.9pp
Tertiary education and independence (18 to 24)
+3
+0.4pp
Young workforce (25 to 34)
-17
-2.3pp
Parents and homebuilders (35 to 49)
-8
-1.2pp
Older workers and pre-retirees (50 to 59)
+7
+0.9pp
Empty nesters and retirees (60 to 69)
+8
+0.9pp
Seniors (70 to 84)
+8
+0.9pp
Elderly aged (85 and over)
+8
+1.1pp
Data table
Service age groups for Welby. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Wingecarribee (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Wingecarribee (A)% | Count | % | Wingecarribee (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 38 | 5.0% | 4.9% | 34 | 4.5% | 4.9% | +4 | +0.5pp |
| Primary schoolers (5 to 11) | 72 | 9.4% | 8.0% | 80 | 10.6% | 8.7% | -8 | -1.2pp |
| Secondary schoolers (12 to 17) | 66 | 8.6% | 7.5% | 58 | 7.7% | 8.2% | +8 | +0.9pp |
| Tertiary education and independence (18 to 24) | 73 | 9.6% | 6.1% | 70 | 9.2% | 6.1% | +3 | +0.4pp |
| Young workforce (25 to 34) | 62 | 8.1% | 9.0% | 79 | 10.4% | 8.3% | -17 | -2.3pp |
| Parents and homebuilders (35 to 49) | 135 | 17.7% | 16.3% | 143 | 18.9% | 17.2% | -8 | -1.2pp |
| Older workers and pre-retirees (50 to 59) | 102 | 13.4% | 13.4% | 95 | 12.5% | 13.8% | +7 | +0.9pp |
| Empty nesters and retirees (60 to 69) | 105 | 13.7% | 14.1% | 97 | 12.8% | 14.9% | +8 | +0.9pp |
| Seniors (70 to 84) | 101 | 13.2% | 17.4% | 93 | 12.3% | 15.0% | +8 | +0.9pp |
| Elderly aged (85 and over) | 18 | 2.4% | 3.3% | 10 | 1.3% | 3.0% | +8 | +1.1pp |
| Total | 764 | 100.0% | 100.0% | 758 | 100.0% | 100.0% | +6 | 0.0pp |