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, 60 to 64 year olds was the largest age group among residents in Barunga West (DC), accounting for 10.1% (265 people). This share was higher than Regional SA (7.7%). Since 2016, the biggest change was in 75 to 79 year olds, which increased by 74 people and 2.7 percentage points.
Section overview
Age structure - Five year age groups
Barunga West (DC) - Total persons (Usual residence)
This table summarises five year age groups for Barunga West (DC) in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Barunga West (DC), with comparison markers for Regional SA.
0 to 4
2021 count
114
% of total
4.4%
Change from 2016
-0.5pp
114
4.4%
-0.5pp
5 to 9
2021 count
138
% of total
5.3%
Change from 2016
+0.8pp
138
5.3%
+0.8pp
10 to 14
2021 count
121
% of total
4.6%
Change from 2016
-0.3pp
121
4.6%
-0.3pp
15 to 19
2021 count
89
% of total
3.4%
Change from 2016
-1.0pp
89
3.4%
-1.0pp
20 to 24
2021 count
76
% of total
2.9%
Change from 2016
+0.4pp
76
2.9%
+0.4pp
25 to 29
2021 count
65
% of total
2.5%
Change from 2016
-0.7pp
65
2.5%
-0.7pp
30 to 34
2021 count
119
% of total
4.5%
Change from 2016
+0.9pp
119
4.5%
+0.9pp
35 to 39
2021 count
97
% of total
3.7%
Change from 2016
-0.1pp
97
3.7%
-0.1pp
40 to 44
2021 count
94
% of total
3.6%
Change from 2016
-1.9pp
94
3.6%
-1.9pp
45 to 49
2021 count
145
% of total
5.5%
Change from 2016
-0.8pp
145
5.5%
-0.8pp
50 to 54
2021 count
159
% of total
6.1%
Change from 2016
-1.7pp
159
6.1%
-1.7pp
55 to 59
2021 count
221
% of total
8.4%
Change from 2016
-0.1pp
221
8.4%
-0.1pp
60 to 64
2021 count
265
% of total
10.1%
Change from 2016
+0.8pp
265
10.1%
+0.8pp
65 to 69
2021 count
258
% of total
9.9%
Change from 2016
-0.6pp
258
9.9%
-0.6pp
70 to 74
2021 count
262
% of total
10.0%
Change from 2016
+1.7pp
262
10.0%
+1.7pp
75 to 79
2021 count
192
% of total
7.3%
Change from 2016
+2.7pp
192
7.3%
+2.7pp
80 to 84
2021 count
110
% of total
4.2%
Change from 2016
0.0pp
110
4.2%
0.0pp
85 and over
2021 count
101
% of total
3.9%
Change from 2016
-0.2pp
101
3.9%
-0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-11
-0.5pp
5 to 9
+23
+0.8pp
10 to 14
-3
-0.3pp
15 to 19
-23
-1.0pp
20 to 24
+12
+0.4pp
25 to 29
-17
-0.7pp
30 to 34
+27
+0.9pp
35 to 39
0
-0.1pp
40 to 44
-45
-1.9pp
45 to 49
-14
-0.8pp
50 to 54
-39
-1.7pp
55 to 59
+6
-0.1pp
60 to 64
+28
+0.8pp
65 to 69
-10
-0.6pp
70 to 74
+51
+1.7pp
75 to 79
+74
+2.7pp
80 to 84
+2
0.0pp
85 and over
-3
-0.2pp
Data table
Five year age groups for Barunga West (DC). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional SA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional SA% | Count | % | Regional SA% | Count | pp | |
| 0 to 4 | 114 | 4.4% | 4.9% | 125 | 4.9% | 5.5% | -11 | -0.5pp |
| 5 to 9 | 138 | 5.3% | 5.7% | 115 | 4.5% | 6.1% | +23 | +0.8pp |
| 10 to 14 | 121 | 4.6% | 6.1% | 124 | 4.9% | 6.0% | -3 | -0.3pp |
| 15 to 19 | 89 | 3.4% | 5.3% | 112 | 4.4% | 5.6% | -23 | -1.0pp |
| 20 to 24 | 76 | 2.9% | 4.6% | 64 | 2.5% | 4.8% | +12 | +0.4pp |
| 25 to 29 | 65 | 2.5% | 5.1% | 82 | 3.2% | 5.1% | -17 | -0.7pp |
| 30 to 34 | 119 | 4.5% | 5.4% | 92 | 3.6% | 5.3% | +27 | +0.9pp |
| 35 to 39 | 97 | 3.7% | 5.4% | 97 | 3.8% | 5.2% | 0 | -0.1pp |
| 40 to 44 | 94 | 3.6% | 5.2% | 139 | 5.5% | 5.9% | -45 | -1.9pp |
| 45 to 49 | 145 | 5.5% | 5.8% | 159 | 6.3% | 6.7% | -14 | -0.8pp |
| 50 to 54 | 159 | 6.1% | 6.7% | 198 | 7.8% | 7.1% | -39 | -1.7pp |
| 55 to 59 | 221 | 8.4% | 7.2% | 215 | 8.5% | 7.5% | +6 | -0.1pp |
| 60 to 64 | 265 | 10.1% | 7.7% | 237 | 9.3% | 7.3% | +28 | +0.8pp |
| 65 to 69 | 258 | 9.9% | 7.4% | 268 | 10.5% | 7.1% | -10 | -0.6pp |
| 70 to 74 | 262 | 10.0% | 6.8% | 211 | 8.3% | 5.5% | +51 | +1.7pp |
| 75 to 79 | 192 | 7.3% | 4.8% | 118 | 4.6% | 3.9% | +74 | +2.7pp |
| 80 to 84 | 110 | 4.2% | 3.1% | 108 | 4.2% | 2.6% | +2 | 0.0pp |
| 85 and over | 101 | 3.9% | 2.8% | 104 | 4.1% | 2.7% | -3 | -0.2pp |
| Total | 2,619 | 100.0% | 100.0% | 2,544 | 100.0% | 100.0% | +75 | 0.0pp |