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 Yendon, accounting for 24.4% (78 people). This share was higher than Moorabool (S) (20.2%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 22 people and 7.6 percentage points.
Section overview
Age structure - Service age groups
Yendon - Total persons (Usual residence)
This table summarises service age groups for Yendon in 2021 for persons, with comparison against Moorabool (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Yendon, with comparison markers for Moorabool (S).
Babies and pre-schoolers (0 to 4)
2021 count
14
% of total
4.4%
Change from 2016
+0.2pp
14
4.4%
+0.2pp
Primary schoolers (5 to 11)
2021 count
29
% of total
9.1%
Change from 2016
-0.7pp
29
9.1%
-0.7pp
Secondary schoolers (12 to 17)
2021 count
35
% of total
10.9%
Change from 2016
+1.8pp
35
10.9%
+1.8pp
Tertiary education and independence (18 to 24)
2021 count
21
% of total
6.6%
Change from 2016
-0.2pp
21
6.6%
-0.2pp
Young workforce (25 to 34)
2021 count
30
% of total
9.4%
Change from 2016
+0.3pp
30
9.4%
+0.3pp
Parents and homebuilders (35 to 49)
2021 count
78
% of total
24.4%
Change from 2016
+1.6pp
78
24.4%
+1.6pp
Older workers and pre-retirees (50 to 59)
2021 count
36
% of total
11.3%
Change from 2016
-7.6pp
36
11.3%
-7.6pp
Empty nesters and retirees (60 to 69)
2021 count
33
% of total
10.3%
Change from 2016
+1.8pp
33
10.3%
+1.8pp
Seniors (70 to 84)
2021 count
23
% of total
7.2%
Change from 2016
+3.3pp
23
7.2%
+3.3pp
Elderly aged (85 and over)
2021 count
4
% of total
1.3%
Change from 2016
-0.3pp
4
1.3%
-0.3pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+1
+0.2pp
Primary schoolers (5 to 11)
-1
-0.7pp
Secondary schoolers (12 to 17)
+7
+1.8pp
Tertiary education and independence (18 to 24)
0
-0.2pp
Young workforce (25 to 34)
+2
+0.3pp
Parents and homebuilders (35 to 49)
+8
+1.6pp
Older workers and pre-retirees (50 to 59)
-22
-7.6pp
Empty nesters and retirees (60 to 69)
+7
+1.8pp
Seniors (70 to 84)
+11
+3.3pp
Elderly aged (85 and over)
-1
-0.3pp
Data table
Service age groups for Yendon. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Moorabool (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Moorabool (S)% | Count | % | Moorabool (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 14 | 4.4% | 6.3% | 13 | 4.2% | 6.4% | +1 | +0.2pp |
| Primary schoolers (5 to 11) | 29 | 9.1% | 9.6% | 30 | 9.8% | 10.0% | -1 | -0.7pp |
| Secondary schoolers (12 to 17) | 35 | 10.9% | 7.8% | 28 | 9.1% | 7.9% | +7 | +1.8pp |
| Tertiary education and independence (18 to 24) | 21 | 6.6% | 7.2% | 21 | 6.8% | 7.9% | 0 | -0.2pp |
| Young workforce (25 to 34) | 30 | 9.4% | 12.7% | 28 | 9.1% | 11.0% | +2 | +0.3pp |
| Parents and homebuilders (35 to 49) | 78 | 24.4% | 20.2% | 70 | 22.8% | 20.9% | +8 | +1.6pp |
| Older workers and pre-retirees (50 to 59) | 36 | 11.3% | 13.3% | 58 | 18.9% | 14.2% | -22 | -7.6pp |
| Empty nesters and retirees (60 to 69) | 33 | 10.3% | 11.3% | 26 | 8.5% | 12.0% | +7 | +1.8pp |
| Seniors (70 to 84) | 23 | 7.2% | 10.0% | 12 | 3.9% | 8.2% | +11 | +3.3pp |
| Elderly aged (85 and over) | 4 | 1.3% | 1.7% | 5 | 1.6% | 1.5% | -1 | -0.3pp |
| Total | 320 | 100.0% | 100.0% | 307 | 100.0% | 100.0% | +13 | 0.0pp |