Population
Five year age groups
About this topic
Five year age groups show the population in standard five-year cohorts from early childhood through older age. Because each band covers the same span of years, the topic gives a clear and comparable view of an area's age structure.
This topic is useful for identifying growth or decline in specific cohorts and for comparing age patterns across places and over time. For service planning, it is often read together with service age groups, household types, and dwelling types.
Interpretation notes
- Age is reported as at Census night, so the counts are a snapshot of the resident age structure at that point in time.
- Because each band covers the same five-year span, this topic is best for exact cohort comparison rather than service-planning life stages.
Related topics
Key insight
In 2021, 40 to 44 year olds was the largest age group among residents in Greendale (Vic.), accounting for 8.3% (52 people). This share was higher than Moorabool (S) (6.7%). Since 2016, the biggest change was in 5 to 9 year olds, which increased by 15 people and 2.2 percentage points.
Section overview
Age structure - Five year age groups
Greendale (Vic.) - Total persons (Usual residence)
This table summarises five year age groups for Greendale (Vic.) in 2021 for persons, with comparison against Moorabool (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Greendale (Vic.), with comparison markers for Moorabool (S).
0 to 4
2021 count
42
% of total
6.7%
Change from 2016
+0.9pp
42
6.7%
+0.9pp
5 to 9
2021 count
42
% of total
6.7%
Change from 2016
+2.2pp
42
6.7%
+2.2pp
10 to 14
2021 count
50
% of total
8.0%
Change from 2016
-1.3pp
50
8.0%
-1.3pp
15 to 19
2021 count
44
% of total
7.1%
Change from 2016
-0.5pp
44
7.1%
-0.5pp
20 to 24
2021 count
24
% of total
3.9%
Change from 2016
-0.4pp
24
3.9%
-0.4pp
25 to 29
2021 count
20
% of total
3.2%
Change from 2016
-0.1pp
20
3.2%
-0.1pp
30 to 34
2021 count
30
% of total
4.8%
Change from 2016
-0.5pp
30
4.8%
-0.5pp
35 to 39
2021 count
29
% of total
4.7%
Change from 2016
-1.1pp
29
4.7%
-1.1pp
40 to 44
2021 count
52
% of total
8.3%
Change from 2016
+0.8pp
52
8.3%
+0.8pp
45 to 49
2021 count
32
% of total
5.1%
Change from 2016
-2.4pp
32
5.1%
-2.4pp
50 to 54
2021 count
48
% of total
7.7%
Change from 2016
-1.1pp
48
7.7%
-1.1pp
55 to 59
2021 count
40
% of total
6.4%
Change from 2016
-0.6pp
40
6.4%
-0.6pp
60 to 64
2021 count
49
% of total
7.9%
Change from 2016
+0.6pp
49
7.9%
+0.6pp
65 to 69
2021 count
34
% of total
5.5%
Change from 2016
-2.5pp
34
5.5%
-2.5pp
70 to 74
2021 count
34
% of total
5.5%
Change from 2016
-0.3pp
34
5.5%
-0.3pp
75 to 79
2021 count
27
% of total
4.3%
Change from 2016
+2.1pp
27
4.3%
+2.1pp
80 to 84
2021 count
13
% of total
2.1%
Change from 2016
+1.3pp
13
2.1%
+1.3pp
85 and over
2021 count
10
% of total
1.6%
Change from 2016
+1.6pp
10
1.6%
+1.6pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+7
+0.9pp
5 to 9
+15
+2.2pp
10 to 14
-6
-1.3pp
15 to 19
-2
-0.5pp
20 to 24
-2
-0.4pp
25 to 29
0
-0.1pp
30 to 34
-2
-0.5pp
35 to 39
-6
-1.1pp
40 to 44
+7
+0.8pp
45 to 49
-13
-2.4pp
50 to 54
-5
-1.1pp
55 to 59
-2
-0.6pp
60 to 64
+5
+0.6pp
65 to 69
-14
-2.5pp
70 to 74
-1
-0.3pp
75 to 79
+14
+2.1pp
80 to 84
+8
+1.3pp
85 and over
+10
+1.6pp
Data table
Five year age groups for Greendale (Vic.). Age structure - Five year 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 | |
| 0 to 4 | 42 | 6.7% | 6.3% | 35 | 5.8% | 6.4% | +7 | +0.9pp |
| 5 to 9 | 42 | 6.7% | 6.8% | 27 | 4.5% | 7.2% | +15 | +2.2pp |
| 10 to 14 | 50 | 8.0% | 7.1% | 56 | 9.3% | 6.7% | -6 | -1.3pp |
| 15 to 19 | 44 | 7.1% | 5.8% | 46 | 7.6% | 6.6% | -2 | -0.5pp |
| 20 to 24 | 24 | 3.9% | 5.1% | 26 | 4.3% | 5.4% | -2 | -0.4pp |
| 25 to 29 | 20 | 3.2% | 6.0% | 20 | 3.3% | 5.2% | 0 | -0.1pp |
| 30 to 34 | 30 | 4.8% | 6.7% | 32 | 5.3% | 5.8% | -2 | -0.5pp |
| 35 to 39 | 29 | 4.7% | 6.9% | 35 | 5.8% | 6.4% | -6 | -1.1pp |
| 40 to 44 | 52 | 8.3% | 6.7% | 45 | 7.5% | 6.9% | +7 | +0.8pp |
| 45 to 49 | 32 | 5.1% | 6.6% | 45 | 7.5% | 7.5% | -13 | -2.4pp |
| 50 to 54 | 48 | 7.7% | 6.9% | 53 | 8.8% | 7.4% | -5 | -1.1pp |
| 55 to 59 | 40 | 6.4% | 6.4% | 42 | 7.0% | 6.8% | -2 | -0.6pp |
| 60 to 64 | 49 | 7.9% | 5.9% | 44 | 7.3% | 6.2% | +5 | +0.6pp |
| 65 to 69 | 34 | 5.5% | 5.4% | 48 | 8.0% | 5.9% | -14 | -2.5pp |
| 70 to 74 | 34 | 5.5% | 5.0% | 35 | 5.8% | 4.2% | -1 | -0.3pp |
| 75 to 79 | 27 | 4.3% | 3.2% | 13 | 2.2% | 2.4% | +14 | +2.1pp |
| 80 to 84 | 13 | 2.1% | 1.7% | 5 | 0.8% | 1.5% | +8 | +1.3pp |
| 85 and over | 10 | 1.6% | 1.7% | 0 | 0.0% | 1.5% | +10 | +1.6pp |
| Total | 623 | 100.0% | 100.0% | 602 | 100.0% | 100.0% | +21 | 0.0pp |