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 Lake Cargelligo, accounting for 18.7% (267 people). This share was higher than Lachlan (A) (17.1%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 335 people and 5 percentage points.
Section overview
Age structure - Service age groups
Lake Cargelligo - Total persons (Usual residence)
This table summarises service age groups for Lake Cargelligo in 2021 for persons, with comparison against Lachlan (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Lake Cargelligo, with comparison markers for Lachlan (A).
Babies and pre-schoolers (0 to 4)
2021 count
97
% of total
6.8%
Change from 2016
+0.8pp
97
6.8%
+0.8pp
Primary schoolers (5 to 11)
2021 count
167
% of total
11.7%
Change from 2016
+4.5pp
167
11.7%
+4.5pp
Secondary schoolers (12 to 17)
2021 count
102
% of total
7.1%
Change from 2016
+1.2pp
102
7.1%
+1.2pp
Tertiary education and independence (18 to 24)
2021 count
90
% of total
6.3%
Change from 2016
-2.7pp
90
6.3%
-2.7pp
Young workforce (25 to 34)
2021 count
163
% of total
11.4%
Change from 2016
-1.4pp
163
11.4%
-1.4pp
Parents and homebuilders (35 to 49)
2021 count
267
% of total
18.7%
Change from 2016
+2.2pp
267
18.7%
+2.2pp
Older workers and pre-retirees (50 to 59)
2021 count
148
% of total
10.3%
Change from 2016
-5.0pp
148
10.3%
-5.0pp
Empty nesters and retirees (60 to 69)
2021 count
182
% of total
12.7%
Change from 2016
+0.4pp
182
12.7%
+0.4pp
Seniors (70 to 84)
2021 count
184
% of total
12.9%
Change from 2016
+1.1pp
184
12.9%
+1.1pp
Elderly aged (85 and over)
2021 count
41
% of total
2.9%
Change from 2016
-0.1pp
41
2.9%
-0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-93
+0.8pp
Primary schoolers (5 to 11)
-60
+4.5pp
Secondary schoolers (12 to 17)
-86
+1.2pp
Tertiary education and independence (18 to 24)
-196
-2.7pp
Young workforce (25 to 34)
-243
-1.4pp
Parents and homebuilders (35 to 49)
-255
+2.2pp
Older workers and pre-retirees (50 to 59)
-335
-5.0pp
Empty nesters and retirees (60 to 69)
-207
+0.4pp
Seniors (70 to 84)
-188
+1.1pp
Elderly aged (85 and over)
-54
-0.1pp
Data table
Service age groups for Lake Cargelligo. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Lachlan (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Lachlan (A)% | Count | % | Lachlan (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 97 | 6.8% | 6.6% | 190 | 6.0% | 8.0% | -93 | +0.8pp |
| Primary schoolers (5 to 11) | 167 | 11.7% | 11.0% | 227 | 7.2% | 10.1% | -60 | +4.5pp |
| Secondary schoolers (12 to 17) | 102 | 7.1% | 7.1% | 188 | 5.9% | 6.8% | -86 | +1.2pp |
| Tertiary education and independence (18 to 24) | 90 | 6.3% | 6.2% | 286 | 9.0% | 7.7% | -196 | -2.7pp |
| Young workforce (25 to 34) | 163 | 11.4% | 11.6% | 406 | 12.8% | 12.0% | -243 | -1.4pp |
| Parents and homebuilders (35 to 49) | 267 | 18.7% | 17.1% | 522 | 16.5% | 15.6% | -255 | +2.2pp |
| Older workers and pre-retirees (50 to 59) | 148 | 10.3% | 11.8% | 483 | 15.3% | 13.3% | -335 | -5.0pp |
| Empty nesters and retirees (60 to 69) | 182 | 12.7% | 13.6% | 389 | 12.3% | 12.1% | -207 | +0.4pp |
| Seniors (70 to 84) | 184 | 12.9% | 11.9% | 372 | 11.8% | 11.9% | -188 | +1.1pp |
| Elderly aged (85 and over) | 41 | 2.9% | 3.4% | 95 | 3.0% | 2.7% | -54 | -0.1pp |
| Total | 1,430 | 100.0% | 100.0% | 3,163 | 100.0% | 100.0% | -1,733 | 0.0pp |