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, 50 to 54 year olds was the largest age group among residents in Perthville, accounting for 8.8% (50 people). This share was higher than Bathurst Regional (A) (6.2%). Since 2016, the biggest change was in 15 to 19 year olds, which decreased by 27 people and 3.8 percentage points.
Section overview
Age structure - Five year age groups
Perthville - Total persons (Usual residence)
This table summarises five year age groups for Perthville in 2021 for persons, with comparison against Bathurst Regional (A) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Perthville, with comparison markers for Bathurst Regional (A).
0 to 4
2021 count
27
% of total
4.8%
Change from 2016
-1.8pp
27
4.8%
-1.8pp
5 to 9
2021 count
41
% of total
7.2%
Change from 2016
+2.4pp
41
7.2%
+2.4pp
10 to 14
2021 count
44
% of total
7.8%
Change from 2016
+1.2pp
44
7.8%
+1.2pp
15 to 19
2021 count
31
% of total
5.5%
Change from 2016
-3.8pp
31
5.5%
-3.8pp
20 to 24
2021 count
27
% of total
4.8%
Change from 2016
-1.1pp
27
4.8%
-1.1pp
25 to 29
2021 count
23
% of total
4.1%
Change from 2016
-1.2pp
23
4.1%
-1.2pp
30 to 34
2021 count
21
% of total
3.7%
Change from 2016
-2.4pp
21
3.7%
-2.4pp
35 to 39
2021 count
26
% of total
4.6%
Change from 2016
-1.2pp
26
4.6%
-1.2pp
40 to 44
2021 count
26
% of total
4.6%
Change from 2016
-0.2pp
26
4.6%
-0.2pp
45 to 49
2021 count
38
% of total
6.7%
Change from 2016
+0.6pp
38
6.7%
+0.6pp
50 to 54
2021 count
50
% of total
8.8%
Change from 2016
+0.9pp
50
8.8%
+0.9pp
55 to 59
2021 count
50
% of total
8.8%
Change from 2016
+0.5pp
50
8.8%
+0.5pp
60 to 64
2021 count
38
% of total
6.7%
Change from 2016
+3.0pp
38
6.7%
+3.0pp
65 to 69
2021 count
24
% of total
4.2%
Change from 2016
-2.9pp
24
4.2%
-2.9pp
70 to 74
2021 count
32
% of total
5.6%
Change from 2016
+0.5pp
32
5.6%
+0.5pp
75 to 79
2021 count
24
% of total
4.2%
Change from 2016
+2.0pp
24
4.2%
+2.0pp
80 to 84
2021 count
11
% of total
1.9%
Change from 2016
+0.3pp
11
1.9%
+0.3pp
85 and over
2021 count
5
% of total
0.9%
Change from 2016
-0.5pp
5
0.9%
-0.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-14
-1.8pp
5 to 9
+11
+2.4pp
10 to 14
+3
+1.2pp
15 to 19
-27
-3.8pp
20 to 24
-10
-1.1pp
25 to 29
-10
-1.2pp
30 to 34
-17
-2.4pp
35 to 39
-10
-1.2pp
40 to 44
-4
-0.2pp
45 to 49
0
+0.6pp
50 to 54
+1
+0.9pp
55 to 59
-2
+0.5pp
60 to 64
+15
+3.0pp
65 to 69
-20
-2.9pp
70 to 74
0
+0.5pp
75 to 79
+10
+2.0pp
80 to 84
+1
+0.3pp
85 and over
-4
-0.5pp
Data table
Five year age groups for Perthville. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Bathurst Regional (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Bathurst Regional (A)% | Count | % | Bathurst Regional (A)% | Count | pp | |
| 0 to 4 | 27 | 4.8% | 5.7% | 41 | 6.6% | 6.2% | -14 | -1.8pp |
| 5 to 9 | 41 | 7.2% | 6.3% | 30 | 4.8% | 6.7% | +11 | +2.4pp |
| 10 to 14 | 44 | 7.8% | 6.8% | 41 | 6.6% | 6.8% | +3 | +1.2pp |
| 15 to 19 | 31 | 5.5% | 6.7% | 58 | 9.3% | 7.2% | -27 | -3.8pp |
| 20 to 24 | 27 | 4.8% | 6.6% | 37 | 5.9% | 7.6% | -10 | -1.1pp |
| 25 to 29 | 23 | 4.1% | 6.3% | 33 | 5.3% | 6.5% | -10 | -1.2pp |
| 30 to 34 | 21 | 3.7% | 6.7% | 38 | 6.1% | 6.0% | -17 | -2.4pp |
| 35 to 39 | 26 | 4.6% | 6.1% | 36 | 5.8% | 5.6% | -10 | -1.2pp |
| 40 to 44 | 26 | 4.6% | 5.7% | 30 | 4.8% | 6.2% | -4 | -0.2pp |
| 45 to 49 | 38 | 6.7% | 6.1% | 38 | 6.1% | 6.5% | 0 | +0.6pp |
| 50 to 54 | 50 | 8.8% | 6.2% | 49 | 7.9% | 6.2% | +1 | +0.9pp |
| 55 to 59 | 50 | 8.8% | 6.1% | 52 | 8.3% | 6.3% | -2 | +0.5pp |
| 60 to 64 | 38 | 6.7% | 6.2% | 23 | 3.7% | 5.8% | +15 | +3.0pp |
| 65 to 69 | 24 | 4.2% | 5.5% | 44 | 7.1% | 5.3% | -20 | -2.9pp |
| 70 to 74 | 32 | 5.6% | 4.8% | 32 | 5.1% | 4.0% | 0 | +0.5pp |
| 75 to 79 | 24 | 4.2% | 3.5% | 14 | 2.2% | 2.8% | +10 | +2.0pp |
| 80 to 84 | 11 | 1.9% | 2.3% | 10 | 1.6% | 2.1% | +1 | +0.3pp |
| 85 and over | 5 | 0.9% | 2.4% | 9 | 1.4% | 2.2% | -4 | -0.5pp |
| Total | 567 | 100.0% | 100.0% | 624 | 100.0% | 100.0% | -57 | 0.0pp |