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, 10 to 14 year olds was the largest age group among residents in Wollongbar, accounting for 7.6% (247 people). This share was higher than Ballina (A) (6.1%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 97 people and 2.3 percentage points.
Section overview
Age structure - Five year age groups
Wollongbar - Total persons (Usual residence)
This table summarises five year age groups for Wollongbar 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 Wollongbar, with comparison markers for Ballina (A).
0 to 4
2021 count
186
% of total
5.7%
Change from 2016
-0.1pp
186
5.7%
-0.1pp
5 to 9
2021 count
221
% of total
6.8%
Change from 2016
-0.5pp
221
6.8%
-0.5pp
10 to 14
2021 count
247
% of total
7.6%
Change from 2016
+0.1pp
247
7.6%
+0.1pp
15 to 19
2021 count
225
% of total
6.9%
Change from 2016
+0.4pp
225
6.9%
+0.4pp
20 to 24
2021 count
165
% of total
5.1%
Change from 2016
+0.1pp
165
5.1%
+0.1pp
25 to 29
2021 count
160
% of total
4.9%
Change from 2016
+0.5pp
160
4.9%
+0.5pp
30 to 34
2021 count
181
% of total
5.6%
Change from 2016
-0.6pp
181
5.6%
-0.6pp
35 to 39
2021 count
223
% of total
6.8%
Change from 2016
+2.3pp
223
6.8%
+2.3pp
40 to 44
2021 count
175
% of total
5.4%
Change from 2016
-1.2pp
175
5.4%
-1.2pp
45 to 49
2021 count
219
% of total
6.7%
Change from 2016
-0.4pp
219
6.7%
-0.4pp
50 to 54
2021 count
208
% of total
6.4%
Change from 2016
-0.3pp
208
6.4%
-0.3pp
55 to 59
2021 count
181
% of total
5.6%
Change from 2016
-1.8pp
181
5.6%
-1.8pp
60 to 64
2021 count
210
% of total
6.4%
Change from 2016
-0.6pp
210
6.4%
-0.6pp
65 to 69
2021 count
196
% of total
6.0%
Change from 2016
+0.5pp
196
6.0%
+0.5pp
70 to 74
2021 count
174
% of total
5.3%
Change from 2016
+0.1pp
174
5.3%
+0.1pp
75 to 79
2021 count
135
% of total
4.1%
Change from 2016
+0.7pp
135
4.1%
+0.7pp
80 to 84
2021 count
86
% of total
2.6%
Change from 2016
+0.4pp
86
2.6%
+0.4pp
85 and over
2021 count
57
% of total
1.7%
Change from 2016
0.0pp
57
1.7%
0.0pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+22
-0.1pp
5 to 9
+14
-0.5pp
10 to 14
+36
+0.1pp
15 to 19
+40
+0.4pp
20 to 24
+25
+0.1pp
25 to 29
+36
+0.5pp
30 to 34
+6
-0.6pp
35 to 39
+97
+2.3pp
40 to 44
-11
-1.2pp
45 to 49
+19
-0.4pp
50 to 54
+18
-0.3pp
55 to 59
-28
-1.8pp
60 to 64
+11
-0.6pp
65 to 69
+41
+0.5pp
70 to 74
+26
+0.1pp
75 to 79
+38
+0.7pp
80 to 84
+24
+0.4pp
85 and over
+9
0.0pp
Data table
Five year age groups for Wollongbar. 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 | 186 | 5.7% | 4.8% | 164 | 5.8% | 5.0% | +22 | -0.1pp |
| 5 to 9 | 221 | 6.8% | 5.5% | 207 | 7.3% | 5.8% | +14 | -0.5pp |
| 10 to 14 | 247 | 7.6% | 6.1% | 211 | 7.5% | 5.8% | +36 | +0.1pp |
| 15 to 19 | 225 | 6.9% | 5.2% | 185 | 6.5% | 5.7% | +40 | +0.4pp |
| 20 to 24 | 165 | 5.1% | 4.1% | 140 | 5.0% | 3.8% | +25 | +0.1pp |
| 25 to 29 | 160 | 4.9% | 4.2% | 124 | 4.4% | 3.9% | +36 | +0.5pp |
| 30 to 34 | 181 | 5.6% | 5.0% | 175 | 6.2% | 4.7% | +6 | -0.6pp |
| 35 to 39 | 223 | 6.8% | 5.6% | 126 | 4.5% | 5.0% | +97 | +2.3pp |
| 40 to 44 | 175 | 5.4% | 5.7% | 186 | 6.6% | 6.1% | -11 | -1.2pp |
| 45 to 49 | 219 | 6.7% | 6.3% | 200 | 7.1% | 6.7% | +19 | -0.4pp |
| 50 to 54 | 208 | 6.4% | 6.5% | 190 | 6.7% | 7.1% | +18 | -0.3pp |
| 55 to 59 | 181 | 5.6% | 6.8% | 209 | 7.4% | 7.7% | -28 | -1.8pp |
| 60 to 64 | 210 | 6.4% | 7.3% | 199 | 7.0% | 7.7% | +11 | -0.6pp |
| 65 to 69 | 196 | 6.0% | 7.6% | 155 | 5.5% | 7.5% | +41 | +0.5pp |
| 70 to 74 | 174 | 5.3% | 7.0% | 148 | 5.2% | 5.6% | +26 | +0.1pp |
| 75 to 79 | 135 | 4.1% | 5.0% | 97 | 3.4% | 4.4% | +38 | +0.7pp |
| 80 to 84 | 86 | 2.6% | 3.6% | 62 | 2.2% | 3.3% | +24 | +0.4pp |
| 85 and over | 57 | 1.7% | 4.0% | 48 | 1.7% | 4.2% | +9 | 0.0pp |
| Total | 3,261 | 100.0% | 100.0% | 2,828 | 100.0% | 100.0% | +433 | 0.0pp |