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, 10 to 14 year olds was the largest age group among residents in Brighton East (part), accounting for 8.1% (1,361 people). This share was higher than Bayside (C) (7.2%). Since 2016, the biggest change was in 15 to 19 year olds, which increased by 225 people and 1 percentage point.
Section overview
Age structure - Five year age groups
Brighton East (part) - Total persons (Usual residence)
This table summarises five year age groups for Brighton East (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 Brighton East (part), with comparison markers for Bayside (C).
0 to 4
2021 count
742
% of total
4.4%
Change from 2016
-0.6pp
742
4.4%
-0.6pp
5 to 9
2021 count
1,061
% of total
6.3%
Change from 2016
-1.2pp
1,061
6.3%
-1.2pp
10 to 14
2021 count
1,361
% of total
8.1%
Change from 2016
+0.6pp
1,361
8.1%
+0.6pp
15 to 19
2021 count
1,231
% of total
7.3%
Change from 2016
+1.0pp
1,231
7.3%
+1.0pp
20 to 24
2021 count
835
% of total
5.0%
Change from 2016
+0.2pp
835
5.0%
+0.2pp
25 to 29
2021 count
531
% of total
3.2%
Change from 2016
-0.2pp
531
3.2%
-0.2pp
30 to 34
2021 count
606
% of total
3.6%
Change from 2016
0.0pp
606
3.6%
0.0pp
35 to 39
2021 count
841
% of total
5.0%
Change from 2016
-0.1pp
841
5.0%
-0.1pp
40 to 44
2021 count
1,077
% of total
6.4%
Change from 2016
-1.1pp
1,077
6.4%
-1.1pp
45 to 49
2021 count
1,318
% of total
7.9%
Change from 2016
-0.5pp
1,318
7.9%
-0.5pp
50 to 54
2021 count
1,329
% of total
7.9%
Change from 2016
+0.3pp
1,329
7.9%
+0.3pp
55 to 59
2021 count
1,144
% of total
6.8%
Change from 2016
0.0pp
1,144
6.8%
0.0pp
60 to 64
2021 count
984
% of total
5.9%
Change from 2016
+0.4pp
984
5.9%
+0.4pp
65 to 69
2021 count
849
% of total
5.1%
Change from 2016
+0.2pp
849
5.1%
+0.2pp
70 to 74
2021 count
771
% of total
4.6%
Change from 2016
+0.3pp
771
4.6%
+0.3pp
75 to 79
2021 count
695
% of total
4.1%
Change from 2016
+0.7pp
695
4.1%
+0.7pp
80 to 84
2021 count
536
% of total
3.2%
Change from 2016
+0.1pp
536
3.2%
+0.1pp
85 and over
2021 count
854
% of total
5.1%
Change from 2016
-0.3pp
854
5.1%
-0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-59
-0.6pp
5 to 9
-134
-1.2pp
10 to 14
+163
+0.6pp
15 to 19
+225
+1.0pp
20 to 24
+69
+0.2pp
25 to 29
-5
-0.2pp
30 to 34
+32
0.0pp
35 to 39
+28
-0.1pp
40 to 44
-119
-1.1pp
45 to 49
-31
-0.5pp
50 to 54
+112
+0.3pp
55 to 59
+60
0.0pp
60 to 64
+100
+0.4pp
65 to 69
+64
+0.2pp
70 to 74
+90
+0.3pp
75 to 79
+144
+0.7pp
80 to 84
+47
+0.1pp
85 and over
-15
-0.3pp
Data table
Five year age groups for Brighton East (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 | 742 | 4.4% | 4.4% | 801 | 5.0% | 5.1% | -59 | -0.6pp |
| 5 to 9 | 1,061 | 6.3% | 5.8% | 1,195 | 7.5% | 6.8% | -134 | -1.2pp |
| 10 to 14 | 1,361 | 8.1% | 7.2% | 1,198 | 7.5% | 7.1% | +163 | +0.6pp |
| 15 to 19 | 1,231 | 7.3% | 6.9% | 1,006 | 6.3% | 6.4% | +225 | +1.0pp |
| 20 to 24 | 835 | 5.0% | 5.1% | 766 | 4.8% | 5.1% | +69 | +0.2pp |
| 25 to 29 | 531 | 3.2% | 3.6% | 536 | 3.4% | 3.9% | -5 | -0.2pp |
| 30 to 34 | 606 | 3.6% | 4.2% | 574 | 3.6% | 4.3% | +32 | 0.0pp |
| 35 to 39 | 841 | 5.0% | 5.3% | 813 | 5.1% | 5.4% | +28 | -0.1pp |
| 40 to 44 | 1,077 | 6.4% | 6.3% | 1,196 | 7.5% | 7.4% | -119 | -1.1pp |
| 45 to 49 | 1,318 | 7.9% | 7.7% | 1,349 | 8.4% | 8.6% | -31 | -0.5pp |
| 50 to 54 | 1,329 | 7.9% | 8.3% | 1,217 | 7.6% | 7.8% | +112 | +0.3pp |
| 55 to 59 | 1,144 | 6.8% | 7.3% | 1,084 | 6.8% | 7.1% | +60 | 0.0pp |
| 60 to 64 | 984 | 5.9% | 6.5% | 884 | 5.5% | 5.9% | +100 | +0.4pp |
| 65 to 69 | 849 | 5.1% | 5.6% | 785 | 4.9% | 5.6% | +64 | +0.2pp |
| 70 to 74 | 771 | 4.6% | 5.4% | 681 | 4.3% | 4.4% | +90 | +0.3pp |
| 75 to 79 | 695 | 4.1% | 4.1% | 551 | 3.4% | 3.1% | +144 | +0.7pp |
| 80 to 84 | 536 | 3.2% | 2.7% | 489 | 3.1% | 2.4% | +47 | +0.1pp |
| 85 and over | 854 | 5.1% | 3.4% | 869 | 5.4% | 3.7% | -15 | -0.3pp |
| Total | 16,757 | 100.0% | 100.0% | 15,998 | 100.0% | 100.0% | +759 | 0.0pp |