Powered by .id (informed decisions) for Northern Beaches Council
.id community is an evidence base for over 250 local government areas in Australia and New Zealand, helping you make informed decisions.
LEARN MORE ABOUT .idIn 2021, the largest age group in Dee Why was 30 to 34 year olds. The group that changed the most since 2001 was 35 to 39 year olds, increasing by 999 people.
The Age Structure of Dee Why provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Dee Why'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 Dee Why'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 | |||||||
|---|---|---|---|---|---|---|---|
| Dee Why - Total persons (Enumerated) | 2021 | 2001 | Change | ||||
| Five year age groups (years) | Number | % | New South Wales % | Number | % | New South Wales % | 2001 to 2021 |
| 0 to 4 | 1,475 | 6.4 | 5.8 | 921 | 5.8 | 6.7 | +553 |
| 5 to 9 | 1,095 | 4.7 | 6.2 | 757 | 4.8 | 7.1 | +337 |
| 10 to 14 | 934 | 4.0 | 6.2 | 683 | 4.3 | 7.1 | +250 |
| 15 to 19 | 881 | 3.8 | 5.7 | 834 | 5.3 | 6.9 | +47 |
| 20 to 24 | 1,473 | 6.3 | 6.2 | 1,298 | 8.2 | 6.5 | +174 |
| 25 to 29 | 2,260 | 9.7 | 6.9 | 1,843 | 11.6 | 7.1 | +417 |
| 30 to 34 | 2,631 | 11.3 | 7.3 | 1,700 | 10.7 | 7.4 | +930 |
| 35 to 39 | 2,371 | 10.2 | 7.2 | 1,371 | 8.7 | 7.7 | +999 |
| 40 to 44 | 1,812 | 7.8 | 6.5 | 1,205 | 7.6 | 7.6 | +607 |
| 45 to 49 | 1,574 | 6.8 | 6.4 | 1,027 | 6.5 | 6.9 | +546 |
| 50 to 54 | 1,444 | 6.2 | 6.2 | 900 | 5.7 | 6.5 | +543 |
| 55 to 59 | 1,348 | 5.8 | 6.1 | 692 | 4.4 | 5.2 | +655 |
| 60 to 64 | 1,178 | 5.1 | 5.8 | 569 | 3.6 | 4.2 | +608 |
| 65 to 69 | 876 | 3.8 | 5.1 | 507 | 3.2 | 3.6 | +368 |
| 70 to 74 | 671 | 2.9 | 4.6 | 521 | 3.3 | 3.4 | +150 |
| 75 to 79 | 493 | 2.1 | 3.3 | 432 | 2.7 | 2.8 | +60 |
| 80 to 84 | 341 | 1.5 | 2.3 | 353 | 2.2 | 1.8 | -13 |
| 85 and over | 354 | 1.5 | 2.3 | 220 | 1.4 | 1.4 | +134 |
| Total population | 23,211 | 100.0 | 100.0 | 15,844 | 100.0 | 100.0 | +7,367 |
Dominant groups
Analysis of the five year age groups of Dee Why in 2021 compared to New South Wales shows that there was a lower proportion of people in the younger age groups (under 15) as well as a lower proportion of people in the older age groups (65+).
Overall, 15.1% of the population was aged between 0 and 15, and 11.8% were aged 65 years and over, compared with 18.2% and 17.6% respectively for New South Wales.
The major differences between the age structure of Dee Why and New South Wales were:
- A larger percentage of persons aged 30 to 34 (11.3% compared to 7.3%)
- A larger percentage of persons aged 35 to 39 (10.2% compared to 7.2%)
- A larger percentage of persons aged 25 to 29 (9.7% compared to 6.9%)
- A smaller percentage of persons aged 10 to 14 (4.0% compared to 6.2%)
Emerging groups
From 2001 to 2021, Dee Why's population increased by 7,367 people (46.5%). This represents an average annual population change of 1.93% per year over the period.
The largest changes in age structure in this area between 2001 and 2021 were in the age groups:
- 35 to 39 (+999 persons)
- 30 to 34 (+930 persons)
- 55 to 59 (+655 persons)
- 60 to 64 (+608 persons)
DISCLAIMER: While all due care has been taken to ensure that the content of this website is accurate and current, there may be errors or omissions in it and no legal responsibility is accepted for the information and opinions in this website.
Please view our Privacy Policy, Terms of use and Legal notices.
ABS Data and the copyright in the ABS Data remains the property of the Australian Bureau of Statistics. The copyright in the way .id has modified, transformed or reconfigured the ABS Data as published on this website remains the property of .id. ABS Data can be accessed from the Australian Bureau of Statistics at www.abs.gov.au. ABS data can be used under license - terms published on ABS website. intermediary.management@abs.gov.au if you have any queries or wish to distribute any ABS data.