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, 35 to 39 year olds was the largest age group among residents in Watsonia North, accounting for 7.4% (281 people). This share was similar to Banyule (C) (7.3%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 281 people and 7.4 percentage points.
Section overview
Age structure - Five year age groups
Watsonia North - Total persons (Usual residence)
This table summarises five year age groups for Watsonia North in 2021 for persons, with comparison against Banyule (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Watsonia North, with comparison markers for Banyule (C).
0 to 4
2021 count
220
% of total
5.8%
Change from 2016
+5.8pp
220
5.8%
+5.8pp
5 to 9
2021 count
244
% of total
6.4%
Change from 2016
-10.7pp
244
6.4%
-10.7pp
10 to 14
2021 count
226
% of total
5.9%
Change from 2016
+5.9pp
226
5.9%
+5.9pp
15 to 19
2021 count
183
% of total
4.8%
Change from 2016
+4.8pp
183
4.8%
+4.8pp
20 to 24
2021 count
211
% of total
5.6%
Change from 2016
+5.6pp
211
5.6%
+5.6pp
25 to 29
2021 count
222
% of total
5.8%
Change from 2016
+5.8pp
222
5.8%
+5.8pp
30 to 34
2021 count
242
% of total
6.4%
Change from 2016
+6.4pp
242
6.4%
+6.4pp
35 to 39
2021 count
281
% of total
7.4%
Change from 2016
+7.4pp
281
7.4%
+7.4pp
40 to 44
2021 count
253
% of total
6.7%
Change from 2016
+6.7pp
253
6.7%
+6.7pp
45 to 49
2021 count
261
% of total
6.9%
Change from 2016
-1.7pp
261
6.9%
-1.7pp
50 to 54
2021 count
223
% of total
5.9%
Change from 2016
-2.7pp
223
5.9%
-2.7pp
55 to 59
2021 count
194
% of total
5.1%
Change from 2016
+5.1pp
194
5.1%
+5.1pp
60 to 64
2021 count
230
% of total
6.1%
Change from 2016
-2.5pp
230
6.1%
-2.5pp
65 to 69
2021 count
194
% of total
5.1%
Change from 2016
+5.1pp
194
5.1%
+5.1pp
70 to 74
2021 count
255
% of total
6.7%
Change from 2016
+6.7pp
255
6.7%
+6.7pp
75 to 79
2021 count
160
% of total
4.2%
Change from 2016
-4.4pp
160
4.2%
-4.4pp
80 to 84
2021 count
126
% of total
3.3%
Change from 2016
+3.3pp
126
3.3%
+3.3pp
85 and over
2021 count
56
% of total
1.5%
Change from 2016
+1.5pp
56
1.5%
+1.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+220
+5.8pp
5 to 9
+238
-10.7pp
10 to 14
+226
+5.9pp
15 to 19
+183
+4.8pp
20 to 24
+211
+5.6pp
25 to 29
+222
+5.8pp
30 to 34
+242
+6.4pp
35 to 39
+281
+7.4pp
40 to 44
+253
+6.7pp
45 to 49
+258
-1.7pp
50 to 54
+220
-2.7pp
55 to 59
+194
+5.1pp
60 to 64
+227
-2.5pp
65 to 69
+194
+5.1pp
70 to 74
+255
+6.7pp
75 to 79
+157
-4.4pp
80 to 84
+126
+3.3pp
85 and over
+56
+1.5pp
Data table
Five year age groups for Watsonia North. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Banyule (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Banyule (C)% | Count | % | Banyule (C)% | Count | pp | |
| 0 to 4 | 220 | 5.8% | 5.6% | 0 | 0.0% | 6.4% | +220 | +5.8pp |
| 5 to 9 | 244 | 6.4% | 6.2% | 6 | 17.1% | 6.2% | +238 | -10.7pp |
| 10 to 14 | 226 | 5.9% | 6.0% | 0 | 0.0% | 5.5% | +226 | +5.9pp |
| 15 to 19 | 183 | 4.8% | 5.4% | 0 | 0.0% | 5.6% | +183 | +4.8pp |
| 20 to 24 | 211 | 5.6% | 5.5% | 0 | 0.0% | 6.1% | +211 | +5.6pp |
| 25 to 29 | 222 | 5.8% | 5.9% | 0 | 0.0% | 6.5% | +222 | +5.8pp |
| 30 to 34 | 242 | 6.4% | 7.0% | 0 | 0.0% | 6.9% | +242 | +6.4pp |
| 35 to 39 | 281 | 7.4% | 7.3% | 0 | 0.0% | 7.1% | +281 | +7.4pp |
| 40 to 44 | 253 | 6.7% | 7.1% | 0 | 0.0% | 7.2% | +253 | +6.7pp |
| 45 to 49 | 261 | 6.9% | 6.9% | 3 | 8.6% | 6.9% | +258 | -1.7pp |
| 50 to 54 | 223 | 5.9% | 6.5% | 3 | 8.6% | 6.4% | +220 | -2.7pp |
| 55 to 59 | 194 | 5.1% | 5.9% | 0 | 0.0% | 6.3% | +194 | +5.1pp |
| 60 to 64 | 230 | 6.1% | 5.8% | 3 | 8.6% | 5.6% | +227 | -2.5pp |
| 65 to 69 | 194 | 5.1% | 5.2% | 0 | 0.0% | 5.4% | +194 | +5.1pp |
| 70 to 74 | 255 | 6.7% | 4.9% | 0 | 0.0% | 4.1% | +255 | +6.7pp |
| 75 to 79 | 160 | 4.2% | 3.6% | 3 | 8.6% | 3.0% | +157 | -4.4pp |
| 80 to 84 | 126 | 3.3% | 2.5% | 0 | 0.0% | 2.3% | +126 | +3.3pp |
| 85 and over | 56 | 1.5% | 2.7% | 0 | 0.0% | 2.7% | +56 | +1.5pp |
| Total | 3,799 | 100.0% | 100.0% | 35 | 100.0% | 100.0% | +3,764 | 0.0pp |