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, 30 to 34 year olds was the largest age group among residents in Heidelberg West, accounting for 10.4% (546 people). This share was higher than Banyule (C) (7%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 540 people and 6.2 percentage points.
Section overview
Age structure - Five year age groups
Heidelberg West - Total persons (Usual residence)
This table summarises five year age groups for Heidelberg West 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 Heidelberg West, with comparison markers for Banyule (C).
0 to 4
2021 count
352
% of total
6.7%
Change from 2016
+6.7pp
352
6.7%
+6.7pp
5 to 9
2021 count
286
% of total
5.4%
Change from 2016
+5.4pp
286
5.4%
+5.4pp
10 to 14
2021 count
252
% of total
4.8%
Change from 2016
-5.7pp
252
4.8%
-5.7pp
15 to 19
2021 count
267
% of total
5.1%
Change from 2016
-1.9pp
267
5.1%
-1.9pp
20 to 24
2021 count
394
% of total
7.5%
Change from 2016
+7.5pp
394
7.5%
+7.5pp
25 to 29
2021 count
512
% of total
9.7%
Change from 2016
+7.6pp
512
9.7%
+7.6pp
30 to 34
2021 count
546
% of total
10.4%
Change from 2016
+6.2pp
546
10.4%
+6.2pp
35 to 39
2021 count
389
% of total
7.4%
Change from 2016
+7.4pp
389
7.4%
+7.4pp
40 to 44
2021 count
329
% of total
6.3%
Change from 2016
+2.1pp
329
6.3%
+2.1pp
45 to 49
2021 count
296
% of total
5.6%
Change from 2016
+1.4pp
296
5.6%
+1.4pp
50 to 54
2021 count
286
% of total
5.4%
Change from 2016
+1.2pp
286
5.4%
+1.2pp
55 to 59
2021 count
330
% of total
6.3%
Change from 2016
-3.5pp
330
6.3%
-3.5pp
60 to 64
2021 count
284
% of total
5.4%
Change from 2016
+3.3pp
284
5.4%
+3.3pp
65 to 69
2021 count
226
% of total
4.3%
Change from 2016
-2.0pp
226
4.3%
-2.0pp
70 to 74
2021 count
194
% of total
3.7%
Change from 2016
-1.2pp
194
3.7%
-1.2pp
75 to 79
2021 count
118
% of total
2.2%
Change from 2016
+0.1pp
118
2.2%
+0.1pp
80 to 84
2021 count
89
% of total
1.7%
Change from 2016
+1.7pp
89
1.7%
+1.7pp
85 and over
2021 count
86
% of total
1.6%
Change from 2016
-0.5pp
86
1.6%
-0.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+352
+6.7pp
5 to 9
+286
+5.4pp
10 to 14
+237
-5.7pp
15 to 19
+257
-1.9pp
20 to 24
+394
+7.5pp
25 to 29
+509
+7.6pp
30 to 34
+540
+6.2pp
35 to 39
+389
+7.4pp
40 to 44
+323
+2.1pp
45 to 49
+290
+1.4pp
50 to 54
+280
+1.2pp
55 to 59
+316
-3.5pp
60 to 64
+281
+3.3pp
65 to 69
+217
-2.0pp
70 to 74
+187
-1.2pp
75 to 79
+115
+0.1pp
80 to 84
+89
+1.7pp
85 and over
+83
-0.5pp
Data table
Five year age groups for Heidelberg West. 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 | 352 | 6.7% | 5.6% | 0 | 0.0% | 6.4% | +352 | +6.7pp |
| 5 to 9 | 286 | 5.4% | 6.2% | 0 | 0.0% | 6.2% | +286 | +5.4pp |
| 10 to 14 | 252 | 4.8% | 6.0% | 15 | 10.5% | 5.5% | +237 | -5.7pp |
| 15 to 19 | 267 | 5.1% | 5.4% | 10 | 7.0% | 5.6% | +257 | -1.9pp |
| 20 to 24 | 394 | 7.5% | 5.5% | 0 | 0.0% | 6.1% | +394 | +7.5pp |
| 25 to 29 | 512 | 9.7% | 5.9% | 3 | 2.1% | 6.5% | +509 | +7.6pp |
| 30 to 34 | 546 | 10.4% | 7.0% | 6 | 4.2% | 6.9% | +540 | +6.2pp |
| 35 to 39 | 389 | 7.4% | 7.3% | 0 | 0.0% | 7.1% | +389 | +7.4pp |
| 40 to 44 | 329 | 6.3% | 7.1% | 6 | 4.2% | 7.2% | +323 | +2.1pp |
| 45 to 49 | 296 | 5.6% | 6.9% | 6 | 4.2% | 6.9% | +290 | +1.4pp |
| 50 to 54 | 286 | 5.4% | 6.5% | 6 | 4.2% | 6.4% | +280 | +1.2pp |
| 55 to 59 | 330 | 6.3% | 5.9% | 14 | 9.8% | 6.3% | +316 | -3.5pp |
| 60 to 64 | 284 | 5.4% | 5.8% | 3 | 2.1% | 5.6% | +281 | +3.3pp |
| 65 to 69 | 226 | 4.3% | 5.2% | 9 | 6.3% | 5.4% | +217 | -2.0pp |
| 70 to 74 | 194 | 3.7% | 4.9% | 7 | 4.9% | 4.1% | +187 | -1.2pp |
| 75 to 79 | 118 | 2.2% | 3.6% | 3 | 2.1% | 3.0% | +115 | +0.1pp |
| 80 to 84 | 89 | 1.7% | 2.5% | 0 | 0.0% | 2.3% | +89 | +1.7pp |
| 85 and over | 86 | 1.6% | 2.7% | 3 | 2.1% | 2.7% | +83 | -0.5pp |
| Total | 5,252 | 100.0% | 100.0% | 143 | 100.0% | 100.0% | +5,109 | 0.0pp |