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 Plumpton (NSW), accounting for 8.2% (821 people). This share was higher than Blacktown (C) (7.3%). Since 2016, the biggest change was in 65 to 69 year olds, which increased by 145 people and 1.2 percentage points.
Section overview
Age structure - Five year age groups
Plumpton (NSW) - Total persons (Usual residence)
This table summarises five year age groups for Plumpton (NSW) in 2021 for persons, with comparison against Blacktown (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Plumpton (NSW), with comparison markers for Blacktown (C).
0 to 4
2021 count
644
% of total
6.4%
Change from 2016
-0.9pp
644
6.4%
-0.9pp
5 to 9
2021 count
778
% of total
7.7%
Change from 2016
-0.2pp
778
7.7%
-0.2pp
10 to 14
2021 count
821
% of total
8.2%
Change from 2016
+0.2pp
821
8.2%
+0.2pp
15 to 19
2021 count
742
% of total
7.4%
Change from 2016
-1.2pp
742
7.4%
-1.2pp
20 to 24
2021 count
775
% of total
7.7%
Change from 2016
0.0pp
775
7.7%
0.0pp
25 to 29
2021 count
704
% of total
7.0%
Change from 2016
+0.1pp
704
7.0%
+0.1pp
30 to 34
2021 count
665
% of total
6.6%
Change from 2016
-0.6pp
665
6.6%
-0.6pp
35 to 39
2021 count
719
% of total
7.1%
Change from 2016
+0.2pp
719
7.1%
+0.2pp
40 to 44
2021 count
702
% of total
7.0%
Change from 2016
-0.1pp
702
7.0%
-0.1pp
45 to 49
2021 count
657
% of total
6.5%
Change from 2016
-0.7pp
657
6.5%
-0.7pp
50 to 54
2021 count
666
% of total
6.6%
Change from 2016
-0.3pp
666
6.6%
-0.3pp
55 to 59
2021 count
610
% of total
6.1%
Change from 2016
0.0pp
610
6.1%
0.0pp
60 to 64
2021 count
558
% of total
5.5%
Change from 2016
+1.0pp
558
5.5%
+1.0pp
65 to 69
2021 count
402
% of total
4.0%
Change from 2016
+1.2pp
402
4.0%
+1.2pp
70 to 74
2021 count
251
% of total
2.5%
Change from 2016
+0.9pp
251
2.5%
+0.9pp
75 to 79
2021 count
137
% of total
1.4%
Change from 2016
+0.2pp
137
1.4%
+0.2pp
80 to 84
2021 count
111
% of total
1.1%
Change from 2016
+0.2pp
111
1.1%
+0.2pp
85 and over
2021 count
115
% of total
1.1%
Change from 2016
0.0pp
115
1.1%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-32
-0.9pp
5 to 9
+49
-0.2pp
10 to 14
+87
+0.2pp
15 to 19
-53
-1.2pp
20 to 24
+69
0.0pp
25 to 29
+70
+0.1pp
30 to 34
+4
-0.6pp
35 to 39
+87
+0.2pp
40 to 44
+51
-0.1pp
45 to 49
-5
-0.7pp
50 to 54
+26
-0.3pp
55 to 59
+45
0.0pp
60 to 64
+139
+1.0pp
65 to 69
+145
+1.2pp
70 to 74
+103
+0.9pp
75 to 79
+26
+0.2pp
80 to 84
+31
+0.2pp
85 and over
+15
0.0pp
Data table
Five year age groups for Plumpton (NSW). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Blacktown (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Blacktown (C)% | Count | % | Blacktown (C)% | Count | pp | |
| 0 to 4 | 644 | 6.4% | 7.5% | 676 | 7.3% | 8.0% | -32 | -0.9pp |
| 5 to 9 | 778 | 7.7% | 7.9% | 729 | 7.9% | 7.9% | +49 | -0.2pp |
| 10 to 14 | 821 | 8.2% | 7.3% | 734 | 8.0% | 6.9% | +87 | +0.2pp |
| 15 to 19 | 742 | 7.4% | 6.1% | 795 | 8.6% | 6.9% | -53 | -1.2pp |
| 20 to 24 | 775 | 7.7% | 6.7% | 706 | 7.7% | 6.8% | +69 | 0.0pp |
| 25 to 29 | 704 | 7.0% | 7.0% | 634 | 6.9% | 7.2% | +70 | +0.1pp |
| 30 to 34 | 665 | 6.6% | 7.9% | 661 | 7.2% | 8.3% | +4 | -0.6pp |
| 35 to 39 | 719 | 7.1% | 9.2% | 632 | 6.9% | 8.1% | +87 | +0.2pp |
| 40 to 44 | 702 | 7.0% | 7.8% | 651 | 7.1% | 7.2% | +51 | -0.1pp |
| 45 to 49 | 657 | 6.5% | 6.4% | 662 | 7.2% | 6.5% | -5 | -0.7pp |
| 50 to 54 | 666 | 6.6% | 5.6% | 640 | 6.9% | 6.0% | +26 | -0.3pp |
| 55 to 59 | 610 | 6.1% | 5.1% | 565 | 6.1% | 5.4% | +45 | 0.0pp |
| 60 to 64 | 558 | 5.5% | 4.5% | 419 | 4.5% | 4.6% | +139 | +1.0pp |
| 65 to 69 | 402 | 4.0% | 3.7% | 257 | 2.8% | 3.8% | +145 | +1.2pp |
| 70 to 74 | 251 | 2.5% | 3.1% | 148 | 1.6% | 2.5% | +103 | +0.9pp |
| 75 to 79 | 137 | 1.4% | 1.9% | 111 | 1.2% | 1.7% | +26 | +0.2pp |
| 80 to 84 | 111 | 1.1% | 1.2% | 80 | 0.9% | 1.1% | +31 | +0.2pp |
| 85 and over | 115 | 1.1% | 1.1% | 100 | 1.1% | 1.1% | +15 | 0.0pp |
| Total | 10,070 | 100.0% | 100.0% | 9,209 | 100.0% | 100.0% | +861 | 0.0pp |