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 Highett (part), accounting for 8.1% (968 people). This share was higher than Bayside (C) (7.7%). Since 2016, the biggest change was in 45 to 49 year olds, which increased by 968 people and 8.1 percentage points.
Section overview
Age structure - Five year age groups
Highett (part) - Total persons (Usual residence)
This table summarises five year age groups for Highett (part) in 2021 for persons, with comparison against Bayside (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Highett (part), with comparison markers for Bayside (C).
0 to 4
2021 count
755
% of total
6.3%
Change from 2016
+6.3pp
755
6.3%
+6.3pp
5 to 9
2021 count
769
% of total
6.4%
Change from 2016
+6.4pp
769
6.4%
+6.4pp
10 to 14
2021 count
690
% of total
5.7%
Change from 2016
+5.7pp
690
5.7%
+5.7pp
15 to 19
2021 count
619
% of total
5.2%
Change from 2016
+5.2pp
619
5.2%
+5.2pp
20 to 24
2021 count
566
% of total
4.7%
Change from 2016
+4.7pp
566
4.7%
+4.7pp
25 to 29
2021 count
691
% of total
5.8%
Change from 2016
+5.8pp
691
5.8%
+5.8pp
30 to 34
2021 count
913
% of total
7.6%
Change from 2016
+7.6pp
913
7.6%
+7.6pp
35 to 39
2021 count
925
% of total
7.7%
Change from 2016
-8.3pp
925
7.7%
-8.3pp
40 to 44
2021 count
964
% of total
8.0%
Change from 2016
-4.0pp
964
8.0%
-4.0pp
45 to 49
2021 count
968
% of total
8.1%
Change from 2016
+8.1pp
968
8.1%
+8.1pp
50 to 54
2021 count
897
% of total
7.5%
Change from 2016
+7.5pp
897
7.5%
+7.5pp
55 to 59
2021 count
719
% of total
6.0%
Change from 2016
+6.0pp
719
6.0%
+6.0pp
60 to 64
2021 count
601
% of total
5.0%
Change from 2016
+5.0pp
601
5.0%
+5.0pp
65 to 69
2021 count
540
% of total
4.5%
Change from 2016
-19.5pp
540
4.5%
-19.5pp
70 to 74
2021 count
504
% of total
4.2%
Change from 2016
+4.2pp
504
4.2%
+4.2pp
75 to 79
2021 count
353
% of total
2.9%
Change from 2016
+2.9pp
353
2.9%
+2.9pp
80 to 84
2021 count
258
% of total
2.1%
Change from 2016
+2.1pp
258
2.1%
+2.1pp
85 and over
2021 count
287
% of total
2.4%
Change from 2016
+2.4pp
287
2.4%
+2.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+755
+6.3pp
5 to 9
+769
+6.4pp
10 to 14
+690
+5.7pp
15 to 19
+619
+5.2pp
20 to 24
+566
+4.7pp
25 to 29
+691
+5.8pp
30 to 34
+913
+7.6pp
35 to 39
+921
-8.3pp
40 to 44
+961
-4.0pp
45 to 49
+968
+8.1pp
50 to 54
+897
+7.5pp
55 to 59
+719
+6.0pp
60 to 64
+601
+5.0pp
65 to 69
+534
-19.5pp
70 to 74
+504
+4.2pp
75 to 79
+353
+2.9pp
80 to 84
+258
+2.1pp
85 and over
+287
+2.4pp
Data table
Five year age groups for Highett (part). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Bayside (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Bayside (C)% | Count | % | Bayside (C)% | Count | pp | |
| 0 to 4 | 755 | 6.3% | 4.4% | 0 | 0.0% | 5.1% | +755 | +6.3pp |
| 5 to 9 | 769 | 6.4% | 5.8% | 0 | 0.0% | 6.8% | +769 | +6.4pp |
| 10 to 14 | 690 | 5.7% | 7.2% | 0 | 0.0% | 7.1% | +690 | +5.7pp |
| 15 to 19 | 619 | 5.2% | 6.9% | 0 | 0.0% | 6.4% | +619 | +5.2pp |
| 20 to 24 | 566 | 4.7% | 5.1% | 0 | 0.0% | 5.1% | +566 | +4.7pp |
| 25 to 29 | 691 | 5.8% | 3.6% | 0 | 0.0% | 3.9% | +691 | +5.8pp |
| 30 to 34 | 913 | 7.6% | 4.2% | 0 | 0.0% | 4.3% | +913 | +7.6pp |
| 35 to 39 | 925 | 7.7% | 5.3% | 4 | 16.0% | 5.4% | +921 | -8.3pp |
| 40 to 44 | 964 | 8.0% | 6.3% | 3 | 12.0% | 7.4% | +961 | -4.0pp |
| 45 to 49 | 968 | 8.1% | 7.7% | 0 | 0.0% | 8.6% | +968 | +8.1pp |
| 50 to 54 | 897 | 7.5% | 8.3% | 0 | 0.0% | 7.8% | +897 | +7.5pp |
| 55 to 59 | 719 | 6.0% | 7.3% | 0 | 0.0% | 7.1% | +719 | +6.0pp |
| 60 to 64 | 601 | 5.0% | 6.5% | 0 | 0.0% | 5.9% | +601 | +5.0pp |
| 65 to 69 | 540 | 4.5% | 5.6% | 6 | 24.0% | 5.6% | +534 | -19.5pp |
| 70 to 74 | 504 | 4.2% | 5.4% | 0 | 0.0% | 4.4% | +504 | +4.2pp |
| 75 to 79 | 353 | 2.9% | 4.1% | 0 | 0.0% | 3.1% | +353 | +2.9pp |
| 80 to 84 | 258 | 2.1% | 2.7% | 0 | 0.0% | 2.4% | +258 | +2.1pp |
| 85 and over | 287 | 2.4% | 3.4% | 0 | 0.0% | 3.7% | +287 | +2.4pp |
| Total | 12,016 | 100.0% | 100.0% | 25 | 100.0% | 100.0% | +11,991 | 0.0pp |