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 Port Kennedy, accounting for 8.7% (1,174 people). This share was higher than Rockingham (C) (7.6%). Since 2016, the biggest change was in 5 to 9 year olds, which decreased by 302 people and 2.1 percentage points.
Section overview
Age structure - Five year age groups
Port Kennedy - Total persons (Usual residence)
This table summarises five year age groups for Port Kennedy in 2021 for persons, with comparison against Rockingham (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Port Kennedy, with comparison markers for Rockingham (C).
0 to 4
2021 count
880
% of total
6.5%
Change from 2016
-0.4pp
880
6.5%
-0.4pp
5 to 9
2021 count
923
% of total
6.8%
Change from 2016
-2.1pp
923
6.8%
-2.1pp
10 to 14
2021 count
1,174
% of total
8.7%
Change from 2016
+0.1pp
1,174
8.7%
+0.1pp
15 to 19
2021 count
1,021
% of total
7.6%
Change from 2016
-0.5pp
1,021
7.6%
-0.5pp
20 to 24
2021 count
867
% of total
6.4%
Change from 2016
-0.3pp
867
6.4%
-0.3pp
25 to 29
2021 count
778
% of total
5.8%
Change from 2016
-0.5pp
778
5.8%
-0.5pp
30 to 34
2021 count
840
% of total
6.2%
Change from 2016
-0.3pp
840
6.2%
-0.3pp
35 to 39
2021 count
854
% of total
6.3%
Change from 2016
+0.1pp
854
6.3%
+0.1pp
40 to 44
2021 count
823
% of total
6.1%
Change from 2016
-2.0pp
823
6.1%
-2.0pp
45 to 49
2021 count
983
% of total
7.3%
Change from 2016
-0.9pp
983
7.3%
-0.9pp
50 to 54
2021 count
1,030
% of total
7.6%
Change from 2016
+0.4pp
1,030
7.6%
+0.4pp
55 to 59
2021 count
938
% of total
7.0%
Change from 2016
+1.6pp
938
7.0%
+1.6pp
60 to 64
2021 count
716
% of total
5.3%
Change from 2016
+1.7pp
716
5.3%
+1.7pp
65 to 69
2021 count
512
% of total
3.8%
Change from 2016
+0.8pp
512
3.8%
+0.8pp
70 to 74
2021 count
422
% of total
3.1%
Change from 2016
+0.8pp
422
3.1%
+0.8pp
75 to 79
2021 count
320
% of total
2.4%
Change from 2016
+0.9pp
320
2.4%
+0.9pp
80 to 84
2021 count
188
% of total
1.4%
Change from 2016
0.0pp
188
1.4%
0.0pp
85 and over
2021 count
217
% of total
1.6%
Change from 2016
+0.3pp
217
1.6%
+0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-68
-0.4pp
5 to 9
-302
-2.1pp
10 to 14
-7
+0.1pp
15 to 19
-97
-0.5pp
20 to 24
-56
-0.3pp
25 to 29
-86
-0.5pp
30 to 34
-55
-0.3pp
35 to 39
+2
+0.1pp
40 to 44
-287
-2.0pp
45 to 49
-151
-0.9pp
50 to 54
+38
+0.4pp
55 to 59
+195
+1.6pp
60 to 64
+221
+1.7pp
65 to 69
+104
+0.8pp
70 to 74
+104
+0.8pp
75 to 79
+108
+0.9pp
80 to 84
-5
0.0pp
85 and over
+42
+0.3pp
Data table
Five year age groups for Port Kennedy. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Rockingham (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Rockingham (C)% | Count | % | Rockingham (C)% | Count | pp | |
| 0 to 4 | 880 | 6.5% | 6.7% | 948 | 6.9% | 7.5% | -68 | -0.4pp |
| 5 to 9 | 923 | 6.8% | 7.3% | 1,225 | 8.9% | 7.9% | -302 | -2.1pp |
| 10 to 14 | 1,174 | 8.7% | 7.6% | 1,181 | 8.6% | 6.9% | -7 | +0.1pp |
| 15 to 19 | 1,021 | 7.6% | 6.5% | 1,118 | 8.1% | 6.6% | -97 | -0.5pp |
| 20 to 24 | 867 | 6.4% | 6.0% | 923 | 6.7% | 6.8% | -56 | -0.3pp |
| 25 to 29 | 778 | 5.8% | 6.4% | 864 | 6.3% | 7.2% | -86 | -0.5pp |
| 30 to 34 | 840 | 6.2% | 7.1% | 895 | 6.5% | 7.4% | -55 | -0.3pp |
| 35 to 39 | 854 | 6.3% | 7.1% | 852 | 6.2% | 6.7% | +2 | +0.1pp |
| 40 to 44 | 823 | 6.1% | 6.4% | 1,110 | 8.1% | 7.1% | -287 | -2.0pp |
| 45 to 49 | 983 | 7.3% | 6.6% | 1,134 | 8.2% | 7.1% | -151 | -0.9pp |
| 50 to 54 | 1,030 | 7.6% | 6.6% | 992 | 7.2% | 6.7% | +38 | +0.4pp |
| 55 to 59 | 938 | 7.0% | 6.2% | 743 | 5.4% | 5.5% | +195 | +1.6pp |
| 60 to 64 | 716 | 5.3% | 5.2% | 495 | 3.6% | 4.5% | +221 | +1.7pp |
| 65 to 69 | 512 | 3.8% | 4.3% | 408 | 3.0% | 4.0% | +104 | +0.8pp |
| 70 to 74 | 422 | 3.1% | 3.7% | 318 | 2.3% | 3.1% | +104 | +0.8pp |
| 75 to 79 | 320 | 2.4% | 2.8% | 212 | 1.5% | 2.3% | +108 | +0.9pp |
| 80 to 84 | 188 | 1.4% | 1.8% | 193 | 1.4% | 1.6% | -5 | 0.0pp |
| 85 and over | 217 | 1.6% | 1.5% | 175 | 1.3% | 1.4% | +42 | +0.3pp |
| Total | 13,477 | 100.0% | 100.0% | 13,777 | 100.0% | 100.0% | -300 | 0.0pp |