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, 65 to 69 year olds was the largest age group among residents in South Arm (Nambucca Valley - NSW), accounting for 13.8% (43 people). This share was higher than Nambucca (A) (8.9%). Since 2016, the biggest change was in 10 to 14 year olds, which decreased by 17 people and 5.4 percentage points.
Section overview
Age structure - Five year age groups
South Arm (Nambucca Valley - NSW) - Total persons (Usual residence)
This table summarises five year age groups for South Arm (Nambucca Valley - NSW) in 2021 for persons, with comparison against Nambucca (A) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for South Arm (Nambucca Valley - NSW), with comparison markers for Nambucca (A).
0 to 4
2021 count
23
% of total
7.4%
Change from 2016
+2.3pp
23
7.4%
+2.3pp
5 to 9
2021 count
9
% of total
2.9%
Change from 2016
-3.5pp
9
2.9%
-3.5pp
10 to 14
2021 count
10
% of total
3.2%
Change from 2016
-5.4pp
10
3.2%
-5.4pp
15 to 19
2021 count
12
% of total
3.9%
Change from 2016
+0.7pp
12
3.9%
+0.7pp
20 to 24
2021 count
8
% of total
2.6%
Change from 2016
-5.1pp
8
2.6%
-5.1pp
25 to 29
2021 count
29
% of total
9.3%
Change from 2016
+4.2pp
29
9.3%
+4.2pp
30 to 34
2021 count
16
% of total
5.1%
Change from 2016
+0.3pp
16
5.1%
+0.3pp
35 to 39
2021 count
4
% of total
1.3%
Change from 2016
-2.5pp
4
1.3%
-2.5pp
40 to 44
2021 count
3
% of total
1.0%
Change from 2016
-4.8pp
3
1.0%
-4.8pp
45 to 49
2021 count
15
% of total
4.8%
Change from 2016
+0.6pp
15
4.8%
+0.6pp
50 to 54
2021 count
13
% of total
4.2%
Change from 2016
-1.6pp
13
4.2%
-1.6pp
55 to 59
2021 count
24
% of total
7.7%
Change from 2016
-3.8pp
24
7.7%
-3.8pp
60 to 64
2021 count
32
% of total
10.3%
Change from 2016
-2.8pp
32
10.3%
-2.8pp
65 to 69
2021 count
43
% of total
13.8%
Change from 2016
+4.5pp
43
13.8%
+4.5pp
70 to 74
2021 count
24
% of total
7.7%
Change from 2016
+4.8pp
24
7.7%
+4.8pp
75 to 79
2021 count
7
% of total
2.3%
Change from 2016
+1.3pp
7
2.3%
+1.3pp
80 to 84
2021 count
6
% of total
1.9%
Change from 2016
0.0pp
6
1.9%
0.0pp
85 and over
2021 count
5
% of total
1.6%
Change from 2016
-0.3pp
5
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
+7
+2.3pp
5 to 9
-11
-3.5pp
10 to 14
-17
-5.4pp
15 to 19
+2
+0.7pp
20 to 24
-16
-5.1pp
25 to 29
+13
+4.2pp
30 to 34
+1
+0.3pp
35 to 39
-8
-2.5pp
40 to 44
-15
-4.8pp
45 to 49
+2
+0.6pp
50 to 54
-5
-1.6pp
55 to 59
-12
-3.8pp
60 to 64
-9
-2.8pp
65 to 69
+14
+4.5pp
70 to 74
+15
+4.8pp
75 to 79
+4
+1.3pp
80 to 84
0
0.0pp
85 and over
-1
-0.3pp
Data table
Five year age groups for South Arm (Nambucca Valley - NSW). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Nambucca (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Nambucca (A)% | Count | % | Nambucca (A)% | Count | pp | |
| 0 to 4 | 23 | 7.4% | 4.8% | 16 | 5.1% | 4.8% | +7 | +2.3pp |
| 5 to 9 | 9 | 2.9% | 5.0% | 20 | 6.4% | 5.9% | -11 | -3.5pp |
| 10 to 14 | 10 | 3.2% | 5.9% | 27 | 8.6% | 5.8% | -17 | -5.4pp |
| 15 to 19 | 12 | 3.9% | 5.3% | 10 | 3.2% | 5.3% | +2 | +0.7pp |
| 20 to 24 | 8 | 2.6% | 3.4% | 24 | 7.7% | 3.9% | -16 | -5.1pp |
| 25 to 29 | 29 | 9.3% | 4.1% | 16 | 5.1% | 3.7% | +13 | +4.2pp |
| 30 to 34 | 16 | 5.1% | 4.1% | 15 | 4.8% | 3.9% | +1 | +0.3pp |
| 35 to 39 | 4 | 1.3% | 4.5% | 12 | 3.8% | 3.9% | -8 | -2.5pp |
| 40 to 44 | 3 | 1.0% | 4.5% | 18 | 5.8% | 5.1% | -15 | -4.8pp |
| 45 to 49 | 15 | 4.8% | 5.5% | 13 | 4.2% | 5.4% | +2 | +0.6pp |
| 50 to 54 | 13 | 4.2% | 5.9% | 18 | 5.8% | 7.3% | -5 | -1.6pp |
| 55 to 59 | 24 | 7.7% | 7.7% | 36 | 11.5% | 8.6% | -12 | -3.8pp |
| 60 to 64 | 32 | 10.3% | 9.3% | 41 | 13.1% | 8.7% | -9 | -2.8pp |
| 65 to 69 | 43 | 13.8% | 8.9% | 29 | 9.3% | 8.7% | +14 | +4.5pp |
| 70 to 74 | 24 | 7.7% | 8.1% | 9 | 2.9% | 6.9% | +15 | +4.8pp |
| 75 to 79 | 7 | 2.3% | 5.8% | 3 | 1.0% | 5.0% | +4 | +1.3pp |
| 80 to 84 | 6 | 1.9% | 3.7% | 6 | 1.9% | 3.3% | 0 | 0.0pp |
| 85 and over | 5 | 1.6% | 3.5% | 6 | 1.9% | 3.7% | -1 | -0.3pp |
| Total | 311 | 100.0% | 100.0% | 313 | 100.0% | 100.0% | -2 | 0.0pp |