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, 50 to 54 year olds was the largest age group among residents in Lower Plenty, accounting for 7.4% (292 people). This share was higher than Banyule (C) (6.5%). Since 2016, the biggest change was in 25 to 29 year olds, which decreased by 53 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Lower Plenty - Total persons (Usual residence)
This table summarises five year age groups for Lower Plenty 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 Lower Plenty, with comparison markers for Banyule (C).
0 to 4
2021 count
186
% of total
4.7%
Change from 2016
-1.0pp
186
4.7%
-1.0pp
5 to 9
2021 count
218
% of total
5.5%
Change from 2016
+0.3pp
218
5.5%
+0.3pp
10 to 14
2021 count
246
% of total
6.2%
Change from 2016
+1.1pp
246
6.2%
+1.1pp
15 to 19
2021 count
243
% of total
6.1%
Change from 2016
+0.7pp
243
6.1%
+0.7pp
20 to 24
2021 count
203
% of total
5.1%
Change from 2016
-0.8pp
203
5.1%
-0.8pp
25 to 29
2021 count
169
% of total
4.3%
Change from 2016
-1.4pp
169
4.3%
-1.4pp
30 to 34
2021 count
203
% of total
5.1%
Change from 2016
-0.6pp
203
5.1%
-0.6pp
35 to 39
2021 count
213
% of total
5.4%
Change from 2016
-0.7pp
213
5.4%
-0.7pp
40 to 44
2021 count
260
% of total
6.6%
Change from 2016
-0.3pp
260
6.6%
-0.3pp
45 to 49
2021 count
291
% of total
7.3%
Change from 2016
+0.5pp
291
7.3%
+0.5pp
50 to 54
2021 count
292
% of total
7.4%
Change from 2016
+0.9pp
292
7.4%
+0.9pp
55 to 59
2021 count
238
% of total
6.0%
Change from 2016
-1.3pp
238
6.0%
-1.3pp
60 to 64
2021 count
284
% of total
7.2%
Change from 2016
+0.8pp
284
7.2%
+0.8pp
65 to 69
2021 count
225
% of total
5.7%
Change from 2016
-0.2pp
225
5.7%
-0.2pp
70 to 74
2021 count
232
% of total
5.9%
Change from 2016
+0.9pp
232
5.9%
+0.9pp
75 to 79
2021 count
186
% of total
4.7%
Change from 2016
+0.8pp
186
4.7%
+0.8pp
80 to 84
2021 count
128
% of total
3.2%
Change from 2016
+0.4pp
128
3.2%
+0.4pp
85 and over
2021 count
159
% of total
4.0%
Change from 2016
+0.1pp
159
4.0%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-34
-1.0pp
5 to 9
+15
+0.3pp
10 to 14
+47
+1.1pp
15 to 19
+32
+0.7pp
20 to 24
-28
-0.8pp
25 to 29
-53
-1.4pp
30 to 34
-17
-0.6pp
35 to 39
-25
-0.7pp
40 to 44
-9
-0.3pp
45 to 49
+25
+0.5pp
50 to 54
+41
+0.9pp
55 to 59
-46
-1.3pp
60 to 64
+34
+0.8pp
65 to 69
-6
-0.2pp
70 to 74
+36
+0.9pp
75 to 79
+33
+0.8pp
80 to 84
+18
+0.4pp
85 and over
+6
+0.1pp
Data table
Five year age groups for Lower Plenty. 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 | 186 | 4.7% | 5.6% | 220 | 5.7% | 6.4% | -34 | -1.0pp |
| 5 to 9 | 218 | 5.5% | 6.2% | 203 | 5.2% | 6.2% | +15 | +0.3pp |
| 10 to 14 | 246 | 6.2% | 6.0% | 199 | 5.1% | 5.5% | +47 | +1.1pp |
| 15 to 19 | 243 | 6.1% | 5.4% | 211 | 5.4% | 5.6% | +32 | +0.7pp |
| 20 to 24 | 203 | 5.1% | 5.5% | 231 | 5.9% | 6.1% | -28 | -0.8pp |
| 25 to 29 | 169 | 4.3% | 5.9% | 222 | 5.7% | 6.5% | -53 | -1.4pp |
| 30 to 34 | 203 | 5.1% | 7.0% | 220 | 5.7% | 6.9% | -17 | -0.6pp |
| 35 to 39 | 213 | 5.4% | 7.3% | 238 | 6.1% | 7.1% | -25 | -0.7pp |
| 40 to 44 | 260 | 6.6% | 7.1% | 269 | 6.9% | 7.2% | -9 | -0.3pp |
| 45 to 49 | 291 | 7.3% | 6.9% | 266 | 6.8% | 6.9% | +25 | +0.5pp |
| 50 to 54 | 292 | 7.4% | 6.5% | 251 | 6.5% | 6.4% | +41 | +0.9pp |
| 55 to 59 | 238 | 6.0% | 5.9% | 284 | 7.3% | 6.3% | -46 | -1.3pp |
| 60 to 64 | 284 | 7.2% | 5.8% | 250 | 6.4% | 5.6% | +34 | +0.8pp |
| 65 to 69 | 225 | 5.7% | 5.2% | 231 | 5.9% | 5.4% | -6 | -0.2pp |
| 70 to 74 | 232 | 5.9% | 4.9% | 196 | 5.0% | 4.1% | +36 | +0.9pp |
| 75 to 79 | 186 | 4.7% | 3.6% | 153 | 3.9% | 3.0% | +33 | +0.8pp |
| 80 to 84 | 128 | 3.2% | 2.5% | 110 | 2.8% | 2.3% | +18 | +0.4pp |
| 85 and over | 159 | 4.0% | 2.7% | 153 | 3.9% | 2.7% | +6 | +0.1pp |
| Total | 3,962 | 100.0% | 100.0% | 3,891 | 100.0% | 100.0% | +71 | 0.0pp |