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, 45 to 49 year olds was the largest age group among residents in Keilor East (part), accounting for 7.1% (1,076 people). This share was similar to Moonee Valley (C) (6.9%). Since 2016, the biggest change was in 45 to 49 year olds, which increased by 1,070 people, while its share fell by 7.2 percentage points.
Section overview
Age structure - Five year age groups
Keilor East (part) - Total persons (Usual residence)
This table summarises five year age groups for Keilor East (part) in 2021 for persons, with comparison against Moonee Valley (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Keilor East (part), with comparison markers for Moonee Valley (C).
0 to 4
2021 count
806
% of total
5.3%
Change from 2016
+5.3pp
806
5.3%
+5.3pp
5 to 9
2021 count
918
% of total
6.1%
Change from 2016
-3.4pp
918
6.1%
-3.4pp
10 to 14
2021 count
931
% of total
6.2%
Change from 2016
+6.2pp
931
6.2%
+6.2pp
15 to 19
2021 count
876
% of total
5.8%
Change from 2016
-6.1pp
876
5.8%
-6.1pp
20 to 24
2021 count
737
% of total
4.9%
Change from 2016
+4.9pp
737
4.9%
+4.9pp
25 to 29
2021 count
718
% of total
4.8%
Change from 2016
+4.8pp
718
4.8%
+4.8pp
30 to 34
2021 count
932
% of total
6.2%
Change from 2016
+6.2pp
932
6.2%
+6.2pp
35 to 39
2021 count
961
% of total
6.4%
Change from 2016
+6.4pp
961
6.4%
+6.4pp
40 to 44
2021 count
988
% of total
6.6%
Change from 2016
-2.9pp
988
6.6%
-2.9pp
45 to 49
2021 count
1,076
% of total
7.1%
Change from 2016
-7.2pp
1,076
7.1%
-7.2pp
50 to 54
2021 count
1,055
% of total
7.0%
Change from 2016
-0.1pp
1,055
7.0%
-0.1pp
55 to 59
2021 count
904
% of total
6.0%
Change from 2016
+6.0pp
904
6.0%
+6.0pp
60 to 64
2021 count
741
% of total
4.9%
Change from 2016
+4.9pp
741
4.9%
+4.9pp
65 to 69
2021 count
690
% of total
4.6%
Change from 2016
+4.6pp
690
4.6%
+4.6pp
70 to 74
2021 count
787
% of total
5.2%
Change from 2016
+5.2pp
787
5.2%
+5.2pp
75 to 79
2021 count
789
% of total
5.2%
Change from 2016
+5.2pp
789
5.2%
+5.2pp
80 to 84
2021 count
661
% of total
4.4%
Change from 2016
+4.4pp
661
4.4%
+4.4pp
85 and over
2021 count
518
% of total
3.4%
Change from 2016
+3.4pp
518
3.4%
+3.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+806
+5.3pp
5 to 9
+914
-3.4pp
10 to 14
+931
+6.2pp
15 to 19
+871
-6.1pp
20 to 24
+737
+4.9pp
25 to 29
+718
+4.8pp
30 to 34
+932
+6.2pp
35 to 39
+961
+6.4pp
40 to 44
+984
-2.9pp
45 to 49
+1,070
-7.2pp
50 to 54
+1,052
-0.1pp
55 to 59
+904
+6.0pp
60 to 64
+741
+4.9pp
65 to 69
+690
+4.6pp
70 to 74
+787
+5.2pp
75 to 79
+789
+5.2pp
80 to 84
+661
+4.4pp
85 and over
+518
+3.4pp
Data table
Five year age groups for Keilor East (part). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Moonee Valley (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Moonee Valley (C)% | Count | % | Moonee Valley (C)% | Count | pp | |
| 0 to 4 | 806 | 5.3% | 5.0% | 0 | 0.0% | 5.7% | +806 | +5.3pp |
| 5 to 9 | 918 | 6.1% | 5.5% | 4 | 9.5% | 5.7% | +914 | -3.4pp |
| 10 to 14 | 931 | 6.2% | 5.5% | 0 | 0.0% | 5.4% | +931 | +6.2pp |
| 15 to 19 | 876 | 5.8% | 5.3% | 5 | 11.9% | 5.4% | +871 | -6.1pp |
| 20 to 24 | 737 | 4.9% | 6.3% | 0 | 0.0% | 6.8% | +737 | +4.9pp |
| 25 to 29 | 718 | 4.8% | 7.4% | 0 | 0.0% | 7.9% | +718 | +4.8pp |
| 30 to 34 | 932 | 6.2% | 7.7% | 0 | 0.0% | 8.1% | +932 | +6.2pp |
| 35 to 39 | 961 | 6.4% | 7.5% | 0 | 0.0% | 7.1% | +961 | +6.4pp |
| 40 to 44 | 988 | 6.6% | 6.9% | 4 | 9.5% | 7.2% | +984 | -2.9pp |
| 45 to 49 | 1,076 | 7.1% | 6.9% | 6 | 14.3% | 7.3% | +1,070 | -7.2pp |
| 50 to 54 | 1,055 | 7.0% | 6.9% | 3 | 7.1% | 6.3% | +1,052 | -0.1pp |
| 55 to 59 | 904 | 6.0% | 6.0% | 0 | 0.0% | 5.9% | +904 | +6.0pp |
| 60 to 64 | 741 | 4.9% | 5.5% | 0 | 0.0% | 5.1% | +741 | +4.9pp |
| 65 to 69 | 690 | 4.6% | 4.7% | 0 | 0.0% | 4.5% | +690 | +4.6pp |
| 70 to 74 | 787 | 5.2% | 4.2% | 0 | 0.0% | 3.5% | +787 | +5.2pp |
| 75 to 79 | 789 | 5.2% | 3.2% | 0 | 0.0% | 3.1% | +789 | +5.2pp |
| 80 to 84 | 661 | 4.4% | 2.5% | 0 | 0.0% | 2.4% | +661 | +4.4pp |
| 85 and over | 518 | 3.4% | 2.7% | 0 | 0.0% | 2.5% | +518 | +3.4pp |
| Total | 15,078 | 100.0% | 100.0% | 42 | 100.0% | 100.0% | +15,036 | 0.0pp |