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, 70 to 74 year olds was the largest age group among residents in North Arm Cove, accounting for 12.3% (68 people). This share was higher than Mid-Coast (A) (9.2%). Since 2016, the biggest change was in 50 to 54 year olds, which increased by 29 people and 4.4 percentage points.
Section overview
Age structure - Five year age groups
North Arm Cove - Total persons (Usual residence)
This table summarises five year age groups for North Arm Cove in 2021 for persons, with comparison against Mid-Coast (A) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for North Arm Cove, with comparison markers for Mid-Coast (A).
0 to 4
2021 count
23
% of total
4.2%
Change from 2016
+0.2pp
23
4.2%
+0.2pp
5 to 9
2021 count
21
% of total
3.8%
Change from 2016
-1.1pp
21
3.8%
-1.1pp
10 to 14
2021 count
26
% of total
4.7%
Change from 2016
+1.6pp
26
4.7%
+1.6pp
15 to 19
2021 count
23
% of total
4.2%
Change from 2016
+1.3pp
23
4.2%
+1.3pp
20 to 24
2021 count
17
% of total
3.1%
Change from 2016
+2.2pp
17
3.1%
+2.2pp
25 to 29
2021 count
11
% of total
2.0%
Change from 2016
-0.5pp
11
2.0%
-0.5pp
30 to 34
2021 count
11
% of total
2.0%
Change from 2016
-2.7pp
11
2.0%
-2.7pp
35 to 39
2021 count
19
% of total
3.4%
Change from 2016
-0.9pp
19
3.4%
-0.9pp
40 to 44
2021 count
25
% of total
4.5%
Change from 2016
-0.2pp
25
4.5%
-0.2pp
45 to 49
2021 count
26
% of total
4.7%
Change from 2016
+1.1pp
26
4.7%
+1.1pp
50 to 54
2021 count
50
% of total
9.1%
Change from 2016
+4.4pp
50
9.1%
+4.4pp
55 to 59
2021 count
59
% of total
10.7%
Change from 2016
+0.8pp
59
10.7%
+0.8pp
60 to 64
2021 count
63
% of total
11.4%
Change from 2016
+0.8pp
63
11.4%
+0.8pp
65 to 69
2021 count
50
% of total
9.1%
Change from 2016
-5.7pp
50
9.1%
-5.7pp
70 to 74
2021 count
68
% of total
12.3%
Change from 2016
+2.2pp
68
12.3%
+2.2pp
75 to 79
2021 count
31
% of total
5.6%
Change from 2016
-1.1pp
31
5.6%
-1.1pp
80 to 84
2021 count
10
% of total
1.8%
Change from 2016
-1.3pp
10
1.8%
-1.3pp
85 and over
2021 count
15
% of total
2.7%
Change from 2016
-0.2pp
15
2.7%
-0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+5
+0.2pp
5 to 9
-1
-1.1pp
10 to 14
+12
+1.6pp
15 to 19
+10
+1.3pp
20 to 24
+13
+2.2pp
25 to 29
0
-0.5pp
30 to 34
-10
-2.7pp
35 to 39
0
-0.9pp
40 to 44
+4
-0.2pp
45 to 49
+10
+1.1pp
50 to 54
+29
+4.4pp
55 to 59
+15
+0.8pp
60 to 64
+16
+0.8pp
65 to 69
-16
-5.7pp
70 to 74
+23
+2.2pp
75 to 79
+1
-1.1pp
80 to 84
-4
-1.3pp
85 and over
+2
-0.2pp
Data table
Five year age groups for North Arm Cove. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Mid-Coast (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mid-Coast (A)% | Count | % | Mid-Coast (A)% | Count | pp | |
| 0 to 4 | 23 | 4.2% | 4.1% | 18 | 4.0% | 4.6% | +5 | +0.2pp |
| 5 to 9 | 21 | 3.8% | 4.9% | 22 | 4.9% | 5.4% | -1 | -1.1pp |
| 10 to 14 | 26 | 4.7% | 5.6% | 14 | 3.1% | 5.4% | +12 | +1.6pp |
| 15 to 19 | 23 | 4.2% | 4.8% | 13 | 2.9% | 5.3% | +10 | +1.3pp |
| 20 to 24 | 17 | 3.1% | 3.6% | 4 | 0.9% | 3.8% | +13 | +2.2pp |
| 25 to 29 | 11 | 2.0% | 3.8% | 11 | 2.5% | 3.7% | 0 | -0.5pp |
| 30 to 34 | 11 | 2.0% | 4.1% | 21 | 4.7% | 3.8% | -10 | -2.7pp |
| 35 to 39 | 19 | 3.4% | 4.3% | 19 | 4.3% | 4.1% | 0 | -0.9pp |
| 40 to 44 | 25 | 4.5% | 4.4% | 21 | 4.7% | 5.1% | +4 | -0.2pp |
| 45 to 49 | 26 | 4.7% | 5.3% | 16 | 3.6% | 5.8% | +10 | +1.1pp |
| 50 to 54 | 50 | 9.1% | 6.0% | 21 | 4.7% | 6.7% | +29 | +4.4pp |
| 55 to 59 | 59 | 10.7% | 7.2% | 44 | 9.9% | 7.8% | +15 | +0.8pp |
| 60 to 64 | 63 | 11.4% | 8.8% | 47 | 10.6% | 8.4% | +16 | +0.8pp |
| 65 to 69 | 50 | 9.1% | 9.1% | 66 | 14.8% | 9.3% | -16 | -5.7pp |
| 70 to 74 | 68 | 12.3% | 9.2% | 45 | 10.1% | 7.7% | +23 | +2.2pp |
| 75 to 79 | 31 | 5.6% | 6.7% | 30 | 6.7% | 5.5% | +1 | -1.1pp |
| 80 to 84 | 10 | 1.8% | 4.2% | 14 | 3.1% | 3.7% | -4 | -1.3pp |
| 85 and over | 15 | 2.7% | 4.0% | 13 | 2.9% | 3.8% | +2 | -0.2pp |
| Total | 552 | 100.0% | 100.0% | 445 | 100.0% | 100.0% | +107 | 0.0pp |