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 West Ballina, accounting for 10.1% (326 people). This share was higher than Ballina (A) (7%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 91 people and 2.3 percentage points.
Section overview
Age structure - Five year age groups
West Ballina - Total persons (Usual residence)
This table summarises five year age groups for West Ballina in 2021 for persons, with comparison against Ballina (A) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for West Ballina, with comparison markers for Ballina (A).
0 to 4
2021 count
136
% of total
4.2%
Change from 2016
+1.4pp
136
4.2%
+1.4pp
5 to 9
2021 count
135
% of total
4.2%
Change from 2016
-1.6pp
135
4.2%
-1.6pp
10 to 14
2021 count
169
% of total
5.2%
Change from 2016
+0.3pp
169
5.2%
+0.3pp
15 to 19
2021 count
170
% of total
5.3%
Change from 2016
+0.8pp
170
5.3%
+0.8pp
20 to 24
2021 count
144
% of total
4.5%
Change from 2016
+0.7pp
144
4.5%
+0.7pp
25 to 29
2021 count
97
% of total
3.0%
Change from 2016
-0.5pp
97
3.0%
-0.5pp
30 to 34
2021 count
130
% of total
4.0%
Change from 2016
+0.5pp
130
4.0%
+0.5pp
35 to 39
2021 count
136
% of total
4.2%
Change from 2016
+0.2pp
136
4.2%
+0.2pp
40 to 44
2021 count
131
% of total
4.1%
Change from 2016
-0.9pp
131
4.1%
-0.9pp
45 to 49
2021 count
180
% of total
5.6%
Change from 2016
-0.2pp
180
5.6%
-0.2pp
50 to 54
2021 count
194
% of total
6.0%
Change from 2016
-0.3pp
194
6.0%
-0.3pp
55 to 59
2021 count
216
% of total
6.7%
Change from 2016
-0.9pp
216
6.7%
-0.9pp
60 to 64
2021 count
218
% of total
6.7%
Change from 2016
-1.7pp
218
6.7%
-1.7pp
65 to 69
2021 count
280
% of total
8.7%
Change from 2016
-1.5pp
280
8.7%
-1.5pp
70 to 74
2021 count
326
% of total
10.1%
Change from 2016
+2.3pp
326
10.1%
+2.3pp
75 to 79
2021 count
259
% of total
8.0%
Change from 2016
+0.7pp
259
8.0%
+0.7pp
80 to 84
2021 count
170
% of total
5.3%
Change from 2016
+0.7pp
170
5.3%
+0.7pp
85 and over
2021 count
120
% of total
3.7%
Change from 2016
+0.3pp
120
3.7%
+0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+50
+1.4pp
5 to 9
-41
-1.6pp
10 to 14
+21
+0.3pp
15 to 19
+35
+0.8pp
20 to 24
+30
+0.7pp
25 to 29
-9
-0.5pp
30 to 34
+23
+0.5pp
35 to 39
+16
+0.2pp
40 to 44
-21
-0.9pp
45 to 49
+5
-0.2pp
50 to 54
+5
-0.3pp
55 to 59
-13
-0.9pp
60 to 64
-36
-1.7pp
65 to 69
-29
-1.5pp
70 to 74
+91
+2.3pp
75 to 79
+39
+0.7pp
80 to 84
+31
+0.7pp
85 and over
+18
+0.3pp
Data table
Five year age groups for West Ballina. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Ballina (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Ballina (A)% | Count | % | Ballina (A)% | Count | pp | |
| 0 to 4 | 136 | 4.2% | 4.8% | 86 | 2.8% | 5.0% | +50 | +1.4pp |
| 5 to 9 | 135 | 4.2% | 5.5% | 176 | 5.8% | 5.8% | -41 | -1.6pp |
| 10 to 14 | 169 | 5.2% | 6.1% | 148 | 4.9% | 5.8% | +21 | +0.3pp |
| 15 to 19 | 170 | 5.3% | 5.2% | 135 | 4.5% | 5.7% | +35 | +0.8pp |
| 20 to 24 | 144 | 4.5% | 4.1% | 114 | 3.8% | 3.8% | +30 | +0.7pp |
| 25 to 29 | 97 | 3.0% | 4.2% | 106 | 3.5% | 3.9% | -9 | -0.5pp |
| 30 to 34 | 130 | 4.0% | 5.0% | 107 | 3.5% | 4.7% | +23 | +0.5pp |
| 35 to 39 | 136 | 4.2% | 5.6% | 120 | 4.0% | 5.0% | +16 | +0.2pp |
| 40 to 44 | 131 | 4.1% | 5.7% | 152 | 5.0% | 6.1% | -21 | -0.9pp |
| 45 to 49 | 180 | 5.6% | 6.3% | 175 | 5.8% | 6.7% | +5 | -0.2pp |
| 50 to 54 | 194 | 6.0% | 6.5% | 189 | 6.3% | 7.1% | +5 | -0.3pp |
| 55 to 59 | 216 | 6.7% | 6.8% | 229 | 7.6% | 7.7% | -13 | -0.9pp |
| 60 to 64 | 218 | 6.7% | 7.3% | 254 | 8.4% | 7.7% | -36 | -1.7pp |
| 65 to 69 | 280 | 8.7% | 7.6% | 309 | 10.2% | 7.5% | -29 | -1.5pp |
| 70 to 74 | 326 | 10.1% | 7.0% | 235 | 7.8% | 5.6% | +91 | +2.3pp |
| 75 to 79 | 259 | 8.0% | 5.0% | 220 | 7.3% | 4.4% | +39 | +0.7pp |
| 80 to 84 | 170 | 5.3% | 3.6% | 139 | 4.6% | 3.3% | +31 | +0.7pp |
| 85 and over | 120 | 3.7% | 4.0% | 102 | 3.4% | 4.2% | +18 | +0.3pp |
| Total | 3,230 | 100.0% | 100.0% | 3,023 | 100.0% | 100.0% | +207 | 0.0pp |