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LEARN MORE ABOUT .idIn 2021, the largest age group in Black Rock was 50 to 54 year olds. The group that changed the most since 1991 was 50 to 54 year olds, increasing by 267 people.
The Age Structure of Black Rock provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Black Rock's residential role and function and how it is likely to change in the future.
Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.
To get a more complete picture Black Rock's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.
Q:
Derived from the Census question:
'What is the person's date of birth or age?'
| Age structure - Five year age groups | |||||||
|---|---|---|---|---|---|---|---|
| Black Rock - Total persons (Enumerated) | 2021 | 1991 | Change | ||||
| Five year age groups (years) | Number | % | Greater Melbourne % | Number | % | Greater Melbourne % | 1991 to 2021 |
| 0 to 4 | 246 | 3.9 | 5.9 | 272 | 5.3 | 7.3 | -27 |
| 5 to 9 | 329 | 5.2 | 6.3 | 294 | 5.7 | 6.9 | +35 |
| 10 to 14 | 423 | 6.7 | 6.0 | 319 | 6.2 | 7.0 | +104 |
| 15 to 19 | 468 | 7.4 | 5.6 | 384 | 7.5 | 7.9 | +84 |
| 20 to 24 | 291 | 4.6 | 6.7 | 318 | 6.2 | 8.9 | -28 |
| 25 to 29 | 176 | 2.8 | 7.8 | 238 | 4.6 | 8.4 | -62 |
| 30 to 34 | 225 | 3.6 | 8.3 | 307 | 6.0 | 8.5 | -82 |
| 35 to 39 | 264 | 4.2 | 8.1 | 364 | 7.1 | 7.8 | -100 |
| 40 to 44 | 371 | 5.9 | 6.9 | 438 | 8.5 | 7.6 | -67 |
| 45 to 49 | 434 | 6.9 | 6.5 | 345 | 6.7 | 6.0 | +88 |
| 50 to 54 | 546 | 8.7 | 6.3 | 279 | 5.4 | 4.9 | +267 |
| 55 to 59 | 495 | 7.9 | 5.6 | 243 | 4.7 | 4.2 | +252 |
| 60 to 64 | 472 | 7.5 | 5.1 | 306 | 5.9 | 4.0 | +166 |
| 65 to 69 | 434 | 6.9 | 4.3 | 327 | 6.4 | 3.6 | +106 |
| 70 to 74 | 414 | 6.6 | 3.8 | 281 | 5.5 | 2.7 | +132 |
| 75 to 79 | 321 | 5.1 | 2.8 | 234 | 4.6 | 2.1 | +86 |
| 80 to 84 | 182 | 2.9 | 2.0 | 129 | 2.5 | 1.3 | +53 |
| 85 and over | 211 | 3.3 | 2.0 | 71 | 1.4 | 0.9 | +140 |
| Total population | 6,302 | 100.0 | 100.0 | 5,155 | 100.0 | 100.0 | +1,146 |
Dominant groups
Analysis of the five year age groups of Black Rock in 2021 compared to Greater Melbourne shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).
Overall, 15.8% of the population was aged between 0 and 15, and 24.8% were aged 65 years and over, compared with 18.2% and 14.9% respectively for Greater Melbourne.
The major differences between the age structure of Black Rock and Greater Melbourne were:
- A larger percentage of persons aged 70 to 74 (6.6% compared to 3.8%)
- A smaller percentage of persons aged 25 to 29 (2.8% compared to 7.8%)
- A smaller percentage of persons aged 30 to 34 (3.6% compared to 8.3%)
- A smaller percentage of persons aged 35 to 39 (4.2% compared to 8.1%)
Emerging groups
From 1991 to 2021, Black Rock's population increased by 1,147 people (22.3%). This represents an average annual population change of 0.67% per year over the period.
The largest changes in age structure in this area between 1991 and 2021 were in the age groups:
- 50 to 54 (+267 persons)
- 55 to 59 (+252 persons)
- 60 to 64 (+166 persons)
- 85 and over (+140 persons)
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