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, 25 to 29 year olds was the largest age group among residents in Penrith, accounting for 11% (1,980 people). This share was higher than Penrith (C) (7.4%). Since 2016, the biggest change was in 25 to 29 year olds, which increased by 776 people and 1.9 percentage points.
Section overview
Age structure - Five year age groups
Penrith - Total persons (Usual residence)
This table summarises five year age groups for Penrith in 2021 for persons, with comparison against Penrith (C) and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for Penrith, with comparison markers for Penrith (C).
0 to 4
2021 count
1,037
% of total
5.8%
Change from 2016
-0.4pp
1,037
5.8%
-0.4pp
5 to 9
2021 count
851
% of total
4.7%
Change from 2016
-0.7pp
851
4.7%
-0.7pp
10 to 14
2021 count
800
% of total
4.5%
Change from 2016
-0.2pp
800
4.5%
-0.2pp
15 to 19
2021 count
750
% of total
4.2%
Change from 2016
-1.2pp
750
4.2%
-1.2pp
20 to 24
2021 count
1,701
% of total
9.5%
Change from 2016
+1.9pp
1,701
9.5%
+1.9pp
25 to 29
2021 count
1,980
% of total
11.0%
Change from 2016
+1.9pp
1,980
11.0%
+1.9pp
30 to 34
2021 count
1,569
% of total
8.7%
Change from 2016
+0.6pp
1,569
8.7%
+0.6pp
35 to 39
2021 count
1,297
% of total
7.2%
Change from 2016
+0.1pp
1,297
7.2%
+0.1pp
40 to 44
2021 count
1,144
% of total
6.4%
Change from 2016
+0.2pp
1,144
6.4%
+0.2pp
45 to 49
2021 count
1,008
% of total
5.6%
Change from 2016
-0.5pp
1,008
5.6%
-0.5pp
50 to 54
2021 count
1,006
% of total
5.6%
Change from 2016
-0.5pp
1,006
5.6%
-0.5pp
55 to 59
2021 count
922
% of total
5.1%
Change from 2016
-0.4pp
922
5.1%
-0.4pp
60 to 64
2021 count
833
% of total
4.6%
Change from 2016
-0.3pp
833
4.6%
-0.3pp
65 to 69
2021 count
716
% of total
4.0%
Change from 2016
-0.7pp
716
4.0%
-0.7pp
70 to 74
2021 count
751
% of total
4.2%
Change from 2016
+0.4pp
751
4.2%
+0.4pp
75 to 79
2021 count
582
% of total
3.2%
Change from 2016
+0.2pp
582
3.2%
+0.2pp
80 to 84
2021 count
445
% of total
2.5%
Change from 2016
-0.1pp
445
2.5%
-0.1pp
85 and over
2021 count
567
% of total
3.2%
Change from 2016
-0.3pp
567
3.2%
-0.3pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+213
-0.4pp
5 to 9
+133
-0.7pp
10 to 14
+175
-0.2pp
15 to 19
+33
-1.2pp
20 to 24
+686
+1.9pp
25 to 29
+776
+1.9pp
30 to 34
+490
+0.6pp
35 to 39
+353
+0.1pp
40 to 44
+325
+0.2pp
45 to 49
+196
-0.5pp
50 to 54
+197
-0.5pp
55 to 59
+190
-0.4pp
60 to 64
+185
-0.3pp
65 to 69
+90
-0.7pp
70 to 74
+247
+0.4pp
75 to 79
+179
+0.2pp
80 to 84
+101
-0.1pp
85 and over
+104
-0.3pp
Data table
Five year age groups for Penrith. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Penrith (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Penrith (C)% | Count | % | Penrith (C)% | Count | pp | |
| 0 to 4 | 1,037 | 5.8% | 7.2% | 824 | 6.2% | 7.4% | +213 | -0.4pp |
| 5 to 9 | 851 | 4.7% | 7.2% | 718 | 5.4% | 7.2% | +133 | -0.7pp |
| 10 to 14 | 800 | 4.5% | 6.8% | 625 | 4.7% | 6.5% | +175 | -0.2pp |
| 15 to 19 | 750 | 4.2% | 6.2% | 717 | 5.4% | 6.6% | +33 | -1.2pp |
| 20 to 24 | 1,701 | 9.5% | 6.8% | 1,015 | 7.6% | 7.2% | +686 | +1.9pp |
| 25 to 29 | 1,980 | 11.0% | 7.4% | 1,204 | 9.1% | 7.7% | +776 | +1.9pp |
| 30 to 34 | 1,569 | 8.7% | 7.7% | 1,079 | 8.1% | 7.8% | +490 | +0.6pp |
| 35 to 39 | 1,297 | 7.2% | 7.8% | 944 | 7.1% | 7.1% | +353 | +0.1pp |
| 40 to 44 | 1,144 | 6.4% | 6.8% | 819 | 6.2% | 6.9% | +325 | +0.2pp |
| 45 to 49 | 1,008 | 5.6% | 6.4% | 812 | 6.1% | 6.4% | +196 | -0.5pp |
| 50 to 54 | 1,006 | 5.6% | 5.9% | 809 | 6.1% | 6.2% | +197 | -0.5pp |
| 55 to 59 | 922 | 5.1% | 5.5% | 732 | 5.5% | 6.1% | +190 | -0.4pp |
| 60 to 64 | 833 | 4.6% | 5.2% | 648 | 4.9% | 5.2% | +185 | -0.3pp |
| 65 to 69 | 716 | 4.0% | 4.3% | 626 | 4.7% | 4.5% | +90 | -0.7pp |
| 70 to 74 | 751 | 4.2% | 3.7% | 504 | 3.8% | 2.9% | +247 | +0.4pp |
| 75 to 79 | 582 | 3.2% | 2.3% | 403 | 3.0% | 1.9% | +179 | +0.2pp |
| 80 to 84 | 445 | 2.5% | 1.4% | 344 | 2.6% | 1.2% | +101 | -0.1pp |
| 85 and over | 567 | 3.2% | 1.2% | 463 | 3.5% | 1.2% | +104 | -0.3pp |
| Total | 17,966 | 100.0% | 100.0% | 13,295 | 100.0% | 100.0% | +4,671 | 0.0pp |