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, 65 to 69 year olds was the largest age group among residents in Mount Alexander (S), accounting for 8.9% (1,794 people). This share was higher than Regional Vic. (6.7%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 459 people and 1.8 percentage points.
Section overview
Age structure - Five year age groups
Mount Alexander (S) - Total persons (Usual residence)
This table summarises five year age groups for Mount Alexander (S) in 2021 for persons, with comparison against Regional Vic. and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Mount Alexander (S), with comparison markers for Regional Vic..
0 to 4
2021 count
804
% of total
4.0%
Change from 2016
-0.5pp
804
4.0%
-0.5pp
5 to 9
2021 count
1,002
% of total
4.9%
Change from 2016
-0.3pp
1,002
4.9%
-0.3pp
10 to 14
2021 count
1,040
% of total
5.1%
Change from 2016
-0.3pp
1,040
5.1%
-0.3pp
15 to 19
2021 count
935
% of total
4.6%
Change from 2016
-0.4pp
935
4.6%
-0.4pp
20 to 24
2021 count
622
% of total
3.1%
Change from 2016
-0.8pp
622
3.1%
-0.8pp
25 to 29
2021 count
781
% of total
3.9%
Change from 2016
-0.1pp
781
3.9%
-0.1pp
30 to 34
2021 count
950
% of total
4.7%
Change from 2016
+0.4pp
950
4.7%
+0.4pp
35 to 39
2021 count
1,094
% of total
5.4%
Change from 2016
+0.2pp
1,094
5.4%
+0.2pp
40 to 44
2021 count
1,164
% of total
5.7%
Change from 2016
-0.6pp
1,164
5.7%
-0.6pp
45 to 49
2021 count
1,360
% of total
6.7%
Change from 2016
-0.8pp
1,360
6.7%
-0.8pp
50 to 54
2021 count
1,447
% of total
7.1%
Change from 2016
-0.5pp
1,447
7.1%
-0.5pp
55 to 59
2021 count
1,571
% of total
7.8%
Change from 2016
-0.5pp
1,571
7.8%
-0.5pp
60 to 64
2021 count
1,721
% of total
8.5%
Change from 2016
-0.4pp
1,721
8.5%
-0.4pp
65 to 69
2021 count
1,794
% of total
8.9%
Change from 2016
+0.8pp
1,794
8.9%
+0.8pp
70 to 74
2021 count
1,560
% of total
7.7%
Change from 2016
+1.8pp
1,560
7.7%
+1.8pp
75 to 79
2021 count
1,066
% of total
5.3%
Change from 2016
+1.0pp
1,066
5.3%
+1.0pp
80 to 84
2021 count
692
% of total
3.4%
Change from 2016
+0.7pp
692
3.4%
+0.7pp
85 and over
2021 count
648
% of total
3.2%
Change from 2016
+0.2pp
648
3.2%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-37
-0.5pp
5 to 9
+21
-0.3pp
10 to 14
+33
-0.3pp
15 to 19
+4
-0.4pp
20 to 24
-105
-0.8pp
25 to 29
+38
-0.1pp
30 to 34
+143
+0.4pp
35 to 39
+110
+0.2pp
40 to 44
-16
-0.6pp
45 to 49
-39
-0.8pp
50 to 54
+28
-0.5pp
55 to 59
+14
-0.5pp
60 to 64
+42
-0.4pp
65 to 69
+270
+0.8pp
70 to 74
+459
+1.8pp
75 to 79
+252
+1.0pp
80 to 84
+184
+0.7pp
85 and over
+87
+0.2pp
Data table
Five year age groups for Mount Alexander (S). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional Vic..
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional Vic.% | Count | % | Regional Vic.% | Count | pp | |
| 0 to 4 | 804 | 4.0% | 5.4% | 841 | 4.5% | 5.8% | -37 | -0.5pp |
| 5 to 9 | 1,002 | 4.9% | 6.0% | 981 | 5.2% | 6.3% | +21 | -0.3pp |
| 10 to 14 | 1,040 | 5.1% | 6.2% | 1,007 | 5.4% | 6.1% | +33 | -0.3pp |
| 15 to 19 | 935 | 4.6% | 5.6% | 931 | 5.0% | 6.1% | +4 | -0.4pp |
| 20 to 24 | 622 | 3.1% | 5.1% | 727 | 3.9% | 5.5% | -105 | -0.8pp |
| 25 to 29 | 781 | 3.9% | 5.8% | 743 | 4.0% | 5.4% | +38 | -0.1pp |
| 30 to 34 | 950 | 4.7% | 5.9% | 807 | 4.3% | 5.5% | +143 | +0.4pp |
| 35 to 39 | 1,094 | 5.4% | 5.9% | 984 | 5.2% | 5.4% | +110 | +0.2pp |
| 40 to 44 | 1,164 | 5.7% | 5.6% | 1,180 | 6.3% | 6.1% | -16 | -0.6pp |
| 45 to 49 | 1,360 | 6.7% | 6.1% | 1,399 | 7.5% | 6.6% | -39 | -0.8pp |
| 50 to 54 | 1,447 | 7.1% | 6.4% | 1,419 | 7.6% | 6.8% | +28 | -0.5pp |
| 55 to 59 | 1,571 | 7.8% | 6.7% | 1,557 | 8.3% | 7.1% | +14 | -0.5pp |
| 60 to 64 | 1,721 | 8.5% | 7.0% | 1,679 | 8.9% | 6.9% | +42 | -0.4pp |
| 65 to 69 | 1,794 | 8.9% | 6.7% | 1,524 | 8.1% | 6.6% | +270 | +0.8pp |
| 70 to 74 | 1,560 | 7.7% | 6.0% | 1,101 | 5.9% | 4.9% | +459 | +1.8pp |
| 75 to 79 | 1,066 | 5.3% | 4.2% | 814 | 4.3% | 3.6% | +252 | +1.0pp |
| 80 to 84 | 692 | 3.4% | 2.8% | 508 | 2.7% | 2.6% | +184 | +0.7pp |
| 85 and over | 648 | 3.2% | 2.7% | 561 | 3.0% | 2.7% | +87 | +0.2pp |
| Total | 20,253 | 100.0% | 100.0% | 18,761 | 100.0% | 100.0% | +1,492 | 0.0pp |