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, 40 to 44 year olds was the largest age group among residents in Sandhurst, accounting for 8.8% (457 people). This share was higher than Frankston (C) (6.8%). Since 2016, the biggest change was in 30 to 34 year olds, which decreased by 155 people and 3.4 percentage points.
Section overview
Age structure - Five year age groups
Sandhurst - Total persons (Usual residence)
This table summarises five year age groups for Sandhurst in 2021 for persons, with comparison against Frankston (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Sandhurst, with comparison markers for Frankston (C).
0 to 4
2021 count
311
% of total
6.0%
Change from 2016
-2.4pp
311
6.0%
-2.4pp
5 to 9
2021 count
420
% of total
8.1%
Change from 2016
+0.5pp
420
8.1%
+0.5pp
10 to 14
2021 count
379
% of total
7.3%
Change from 2016
+1.0pp
379
7.3%
+1.0pp
15 to 19
2021 count
316
% of total
6.1%
Change from 2016
+0.5pp
316
6.1%
+0.5pp
20 to 24
2021 count
243
% of total
4.7%
Change from 2016
-0.1pp
243
4.7%
-0.1pp
25 to 29
2021 count
173
% of total
3.3%
Change from 2016
-1.6pp
173
3.3%
-1.6pp
30 to 34
2021 count
251
% of total
4.8%
Change from 2016
-3.4pp
251
4.8%
-3.4pp
35 to 39
2021 count
393
% of total
7.5%
Change from 2016
-1.2pp
393
7.5%
-1.2pp
40 to 44
2021 count
457
% of total
8.8%
Change from 2016
-0.2pp
457
8.8%
-0.2pp
45 to 49
2021 count
449
% of total
8.6%
Change from 2016
+1.4pp
449
8.6%
+1.4pp
50 to 54
2021 count
377
% of total
7.2%
Change from 2016
-0.1pp
377
7.2%
-0.1pp
55 to 59
2021 count
371
% of total
7.1%
Change from 2016
+0.9pp
371
7.1%
+0.9pp
60 to 64
2021 count
337
% of total
6.5%
Change from 2016
+0.4pp
337
6.5%
+0.4pp
65 to 69
2021 count
307
% of total
5.9%
Change from 2016
+0.8pp
307
5.9%
+0.8pp
70 to 74
2021 count
247
% of total
4.7%
Change from 2016
+2.0pp
247
4.7%
+2.0pp
75 to 79
2021 count
106
% of total
2.0%
Change from 2016
+1.1pp
106
2.0%
+1.1pp
80 to 84
2021 count
41
% of total
0.8%
Change from 2016
+0.4pp
41
0.8%
+0.4pp
85 and over
2021 count
22
% of total
0.4%
Change from 2016
+0.3pp
22
0.4%
+0.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-108
-2.4pp
5 to 9
+40
+0.5pp
10 to 14
+66
+1.0pp
15 to 19
+39
+0.5pp
20 to 24
+2
-0.1pp
25 to 29
-72
-1.6pp
30 to 34
-155
-3.4pp
35 to 39
-39
-1.2pp
40 to 44
+7
-0.2pp
45 to 49
+88
+1.4pp
50 to 54
+14
-0.1pp
55 to 59
+62
+0.9pp
60 to 64
+32
+0.4pp
65 to 69
+52
+0.8pp
70 to 74
+114
+2.0pp
75 to 79
+61
+1.1pp
80 to 84
+19
+0.4pp
85 and over
+15
+0.3pp
Data table
Five year age groups for Sandhurst. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Frankston (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Frankston (C)% | Count | % | Frankston (C)% | Count | pp | |
| 0 to 4 | 311 | 6.0% | 6.2% | 419 | 8.4% | 6.7% | -108 | -2.4pp |
| 5 to 9 | 420 | 8.1% | 6.3% | 380 | 7.6% | 6.2% | +40 | +0.5pp |
| 10 to 14 | 379 | 7.3% | 6.1% | 313 | 6.3% | 5.7% | +66 | +1.0pp |
| 15 to 19 | 316 | 6.1% | 5.6% | 277 | 5.6% | 6.0% | +39 | +0.5pp |
| 20 to 24 | 243 | 4.7% | 5.6% | 241 | 4.8% | 6.3% | +2 | -0.1pp |
| 25 to 29 | 173 | 3.3% | 6.4% | 245 | 4.9% | 6.6% | -72 | -1.6pp |
| 30 to 34 | 251 | 4.8% | 7.3% | 406 | 8.2% | 7.2% | -155 | -3.4pp |
| 35 to 39 | 393 | 7.5% | 7.4% | 432 | 8.7% | 6.8% | -39 | -1.2pp |
| 40 to 44 | 457 | 8.8% | 6.8% | 450 | 9.0% | 7.1% | +7 | -0.2pp |
| 45 to 49 | 449 | 8.6% | 6.9% | 361 | 7.2% | 7.2% | +88 | +1.4pp |
| 50 to 54 | 377 | 7.2% | 6.7% | 363 | 7.3% | 6.8% | +14 | -0.1pp |
| 55 to 59 | 371 | 7.1% | 6.3% | 309 | 6.2% | 6.5% | +62 | +0.9pp |
| 60 to 64 | 337 | 6.5% | 5.9% | 305 | 6.1% | 5.5% | +32 | +0.4pp |
| 65 to 69 | 307 | 5.9% | 4.9% | 255 | 5.1% | 5.0% | +52 | +0.8pp |
| 70 to 74 | 247 | 4.7% | 4.4% | 133 | 2.7% | 3.7% | +114 | +2.0pp |
| 75 to 79 | 106 | 2.0% | 3.1% | 45 | 0.9% | 2.7% | +61 | +1.1pp |
| 80 to 84 | 41 | 0.8% | 2.0% | 22 | 0.4% | 1.9% | +19 | +0.4pp |
| 85 and over | 22 | 0.4% | 2.2% | 7 | 0.1% | 2.0% | +15 | +0.3pp |
| Total | 5,211 | 100.0% | 100.0% | 4,981 | 100.0% | 100.0% | +230 | 0.0pp |