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, 55 to 59 year olds was the largest age group among residents in Barnawartha, accounting for 8% (79 people). This share was higher than Indigo (S) (7.8%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 67 people and 5.3 percentage points.
Section overview
Age structure - Five year age groups
Barnawartha - Total persons (Usual residence)
This table summarises five year age groups for Barnawartha in 2021 for persons, with comparison against Indigo (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Barnawartha, with comparison markers for Indigo (S).
0 to 4
2021 count
74
% of total
7.5%
Change from 2016
+2.2pp
74
7.5%
+2.2pp
5 to 9
2021 count
66
% of total
6.7%
Change from 2016
+2.6pp
66
6.7%
+2.6pp
10 to 14
2021 count
68
% of total
6.9%
Change from 2016
+0.4pp
68
6.9%
+0.4pp
15 to 19
2021 count
66
% of total
6.7%
Change from 2016
+0.8pp
66
6.7%
+0.8pp
20 to 24
2021 count
35
% of total
3.5%
Change from 2016
-5.4pp
35
3.5%
-5.4pp
25 to 29
2021 count
59
% of total
6.0%
Change from 2016
+1.3pp
59
6.0%
+1.3pp
30 to 34
2021 count
70
% of total
7.1%
Change from 2016
+5.3pp
70
7.1%
+5.3pp
35 to 39
2021 count
55
% of total
5.6%
Change from 2016
+0.3pp
55
5.6%
+0.3pp
40 to 44
2021 count
68
% of total
6.9%
Change from 2016
+1.0pp
68
6.9%
+1.0pp
45 to 49
2021 count
60
% of total
6.1%
Change from 2016
+2.5pp
60
6.1%
+2.5pp
50 to 54
2021 count
76
% of total
7.7%
Change from 2016
-3.0pp
76
7.7%
-3.0pp
55 to 59
2021 count
79
% of total
8.0%
Change from 2016
-2.7pp
79
8.0%
-2.7pp
60 to 64
2021 count
78
% of total
7.9%
Change from 2016
-2.8pp
78
7.9%
-2.8pp
65 to 69
2021 count
48
% of total
4.9%
Change from 2016
-2.2pp
48
4.9%
-2.2pp
70 to 74
2021 count
45
% of total
4.6%
Change from 2016
+1.0pp
45
4.6%
+1.0pp
75 to 79
2021 count
32
% of total
3.2%
Change from 2016
+3.2pp
32
3.2%
+3.2pp
80 to 84
2021 count
15
% of total
1.5%
Change from 2016
+1.5pp
15
1.5%
+1.5pp
85 and over
2021 count
3
% of total
0.3%
Change from 2016
+0.3pp
3
0.3%
+0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+65
+2.2pp
5 to 9
+59
+2.6pp
10 to 14
+57
+0.4pp
15 to 19
+56
+0.8pp
20 to 24
+20
-5.4pp
25 to 29
+51
+1.3pp
30 to 34
+67
+5.3pp
35 to 39
+46
+0.3pp
40 to 44
+58
+1.0pp
45 to 49
+54
+2.5pp
50 to 54
+58
-3.0pp
55 to 59
+61
-2.7pp
60 to 64
+60
-2.8pp
65 to 69
+36
-2.2pp
70 to 74
+39
+1.0pp
75 to 79
+32
+3.2pp
80 to 84
+15
+1.5pp
85 and over
+3
+0.3pp
Data table
Five year age groups for Barnawartha. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Indigo (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Indigo (S)% | Count | % | Indigo (S)% | Count | pp | |
| 0 to 4 | 74 | 7.5% | 4.9% | 9 | 5.3% | 4.8% | +65 | +2.2pp |
| 5 to 9 | 66 | 6.7% | 5.8% | 7 | 4.1% | 6.4% | +59 | +2.6pp |
| 10 to 14 | 68 | 6.9% | 6.9% | 11 | 6.5% | 6.6% | +57 | +0.4pp |
| 15 to 19 | 66 | 6.7% | 5.7% | 10 | 5.9% | 5.9% | +56 | +0.8pp |
| 20 to 24 | 35 | 3.5% | 3.4% | 15 | 8.9% | 3.7% | +20 | -5.4pp |
| 25 to 29 | 59 | 6.0% | 4.0% | 8 | 4.7% | 3.7% | +51 | +1.3pp |
| 30 to 34 | 70 | 7.1% | 4.4% | 3 | 1.8% | 4.3% | +67 | +5.3pp |
| 35 to 39 | 55 | 5.6% | 5.3% | 9 | 5.3% | 5.2% | +46 | +0.3pp |
| 40 to 44 | 68 | 6.9% | 5.9% | 10 | 5.9% | 6.9% | +58 | +1.0pp |
| 45 to 49 | 60 | 6.1% | 6.9% | 6 | 3.6% | 7.5% | +54 | +2.5pp |
| 50 to 54 | 76 | 7.7% | 7.2% | 18 | 10.7% | 8.0% | +58 | -3.0pp |
| 55 to 59 | 79 | 8.0% | 7.8% | 18 | 10.7% | 8.4% | +61 | -2.7pp |
| 60 to 64 | 78 | 7.9% | 8.3% | 18 | 10.7% | 8.0% | +60 | -2.8pp |
| 65 to 69 | 48 | 4.9% | 7.4% | 12 | 7.1% | 7.7% | +36 | -2.2pp |
| 70 to 74 | 45 | 4.6% | 6.8% | 6 | 3.6% | 5.1% | +39 | +1.0pp |
| 75 to 79 | 32 | 3.2% | 4.5% | 0 | 0.0% | 3.5% | +32 | +3.2pp |
| 80 to 84 | 15 | 1.5% | 2.6% | 0 | 0.0% | 2.1% | +15 | +1.5pp |
| 85 and over | 3 | 0.3% | 2.3% | 0 | 0.0% | 2.2% | +3 | +0.3pp |
| Total | 987 | 100.0% | 100.0% | 169 | 100.0% | 100.0% | +818 | 0.0pp |