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, Older workers and pre-retirees (50 to 59) was the most common category among residents in Yerong Creek, accounting for 18.9% (67 people). This share was higher than Lockhart (A) (14.3%). Since 2016, the biggest change was in Secondary schoolers (12 to 17), which decreased by 18 people and 5.2 percentage points.
Section overview
Age structure - Service age groups
Yerong Creek - Total persons (Usual residence)
This table summarises service age groups for Yerong Creek in 2021 for persons, with comparison against Lockhart (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Yerong Creek, with comparison markers for Lockhart (A).
Babies and pre-schoolers (0 to 4)
2021 count
15
% of total
4.2%
Change from 2016
-2.1pp
15
4.2%
-2.1pp
Primary schoolers (5 to 11)
2021 count
35
% of total
9.9%
Change from 2016
-0.9pp
35
9.9%
-0.9pp
Secondary schoolers (12 to 17)
2021 count
36
% of total
10.1%
Change from 2016
-5.2pp
36
10.1%
-5.2pp
Tertiary education and independence (18 to 24)
2021 count
34
% of total
9.6%
Change from 2016
+3.6pp
34
9.6%
+3.6pp
Young workforce (25 to 34)
2021 count
18
% of total
5.1%
Change from 2016
+1.1pp
18
5.1%
+1.1pp
Parents and homebuilders (35 to 49)
2021 count
47
% of total
13.2%
Change from 2016
-3.6pp
47
13.2%
-3.6pp
Older workers and pre-retirees (50 to 59)
2021 count
67
% of total
18.9%
Change from 2016
-1.3pp
67
18.9%
-1.3pp
Empty nesters and retirees (60 to 69)
2021 count
51
% of total
14.4%
Change from 2016
+3.6pp
51
14.4%
+3.6pp
Seniors (70 to 84)
2021 count
38
% of total
10.7%
Change from 2016
+3.3pp
38
10.7%
+3.3pp
Elderly aged (85 and over)
2021 count
4
% of total
1.1%
Change from 2016
+0.2pp
4
1.1%
+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)
-7
-2.1pp
Primary schoolers (5 to 11)
-3
-0.9pp
Secondary schoolers (12 to 17)
-18
-5.2pp
Tertiary education and independence (18 to 24)
+13
+3.6pp
Young workforce (25 to 34)
+4
+1.1pp
Parents and homebuilders (35 to 49)
-12
-3.6pp
Older workers and pre-retirees (50 to 59)
-4
-1.3pp
Empty nesters and retirees (60 to 69)
+13
+3.6pp
Seniors (70 to 84)
+12
+3.3pp
Elderly aged (85 and over)
+1
+0.2pp
Data table
Service age groups for Yerong Creek. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Lockhart (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Lockhart (A)% | Count | % | Lockhart (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 15 | 4.2% | 6.1% | 22 | 6.3% | 6.4% | -7 | -2.1pp |
| Primary schoolers (5 to 11) | 35 | 9.9% | 10.2% | 38 | 10.8% | 9.7% | -3 | -0.9pp |
| Secondary schoolers (12 to 17) | 36 | 10.1% | 8.1% | 54 | 15.3% | 8.4% | -18 | -5.2pp |
| Tertiary education and independence (18 to 24) | 34 | 9.6% | 6.7% | 21 | 6.0% | 6.3% | +13 | +3.6pp |
| Young workforce (25 to 34) | 18 | 5.1% | 7.5% | 14 | 4.0% | 8.3% | +4 | +1.1pp |
| Parents and homebuilders (35 to 49) | 47 | 13.2% | 15.1% | 59 | 16.8% | 16.3% | -12 | -3.6pp |
| Older workers and pre-retirees (50 to 59) | 67 | 18.9% | 14.3% | 71 | 20.2% | 15.6% | -4 | -1.3pp |
| Empty nesters and retirees (60 to 69) | 51 | 14.4% | 14.9% | 38 | 10.8% | 14.1% | +13 | +3.6pp |
| Seniors (70 to 84) | 38 | 10.7% | 13.7% | 26 | 7.4% | 12.8% | +12 | +3.3pp |
| Elderly aged (85 and over) | 4 | 1.1% | 3.6% | 3 | 0.9% | 3.0% | +1 | +0.2pp |
| Total | 355 | 100.0% | 100.0% | 352 | 100.0% | 100.0% | +3 | 0.0pp |