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LEARN MORE ABOUT .idIn 2021, the largest age group in Mount Martha was 50 to 54 year olds. The group that changed the most since 2001 was 70 to 74 year olds, increasing by 452 people.
The Age Structure of Mount Martha provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Mount Martha'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 Mount Martha'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 | |||||||
|---|---|---|---|---|---|---|---|
| Mount Martha - Total females (Usual residence) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | Interface Councils % | Number | % | Interface Councils % | 2001 to 2021 |
| 0 to 4 | 455 | 4.4 | 7.1 | 472 | 7.5 | 7.4 | -17 |
| 5 to 9 | 654 | 6.3 | 7.4 | 461 | 7.3 | 8.1 | +192 |
| 10 to 14 | 762 | 7.4 | 6.7 | 466 | 7.4 | 8.0 | +295 |
| 15 to 19 | 665 | 6.4 | 5.8 | 334 | 5.3 | 7.4 | +331 |
| 20 to 24 | 421 | 4.1 | 5.8 | 224 | 3.6 | 6.1 | +196 |
| 25 to 29 | 255 | 2.5 | 6.7 | 332 | 5.3 | 6.9 | -78 |
| 30 to 34 | 346 | 3.3 | 8.3 | 467 | 7.4 | 8.2 | -122 |
| 35 to 39 | 552 | 5.3 | 8.6 | 507 | 8.1 | 8.4 | +44 |
| 40 to 44 | 676 | 6.5 | 6.9 | 531 | 8.4 | 8.2 | +144 |
| 45 to 49 | 804 | 7.8 | 6.4 | 409 | 6.5 | 7.2 | +395 |
| 50 to 54 | 854 | 8.3 | 6.1 | 429 | 6.8 | 6.4 | +424 |
| 55 to 59 | 642 | 6.2 | 5.4 | 374 | 5.9 | 4.5 | +267 |
| 60 to 64 | 675 | 6.5 | 5.0 | 295 | 4.7 | 3.4 | +380 |
| 65 to 69 | 631 | 6.1 | 4.3 | 278 | 4.4 | 2.8 | +353 |
| 70 to 74 | 721 | 7.0 | 3.7 | 268 | 4.3 | 2.5 | +452 |
| 75 to 79 | 529 | 5.1 | 2.5 | 187 | 3.0 | 2.0 | +341 |
| 80 to 84 | 349 | 3.4 | 1.6 | 151 | 2.4 | 1.3 | +198 |
| 85 and over | 356 | 3.4 | 1.6 | 111 | 1.8 | 1.1 | +245 |
| Total population | 10,347 | 100.0 | 100.0 | 6,305 | 100.0 | 100.0 | +4,041 |
Dominant groups
Analysis of the female five year age groups of Mount Martha in 2021 compared to Interface Councils shows that there was a lower proportion of females in the younger age groups (under 15) and a higher proportion of females in the older age groups (65+).
Overall, 18.1% of the female population was aged between 0 and 15, and 25.0% were aged 65 years and over, compared with 21.2% and 13.6% respectively for Interface Councils.
The major differences between the female age structure of Mount Martha and Interface Councils were:
- A larger percentage of females aged 70 to 74 (7.0% compared to 3.7%)
- A smaller percentage of females aged 30 to 34 (3.3% compared to 8.3%)
- A smaller percentage of females aged 25 to 29 (2.5% compared to 6.7%)
- A smaller percentage of females aged 35 to 39 (5.3% compared to 8.6%)
Emerging groups
From 2001 to 2021, Mount Martha's female population increased by 4,042 people (64.1%). This represents an average annual population change of 2.51% per year over the period.
The largest changes in female age structure in this area between 2001 and 2021 were in the age groups:
- 70 to 74 (+452 females)
- 50 to 54 (+424 females)
- 45 to 49 (+395 females)
- 60 to 64 (+380 females)
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