Collaroy Plateau, NSW
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's more advantaged suburbs
Collaroy Plateau is more socio-economically advantaged than about 98% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1137, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
Collaroy Plateau at a glance
- Population (2021)
- 4,805
- Median age
- 40
- Median weekly household income
- $3,278
- SEIFA score
- 1137
- Coordinates
- -33.7302, 151.2896
Collaroy Plateau demographics (2021 Census)
The figures below profile Collaroy Plateau using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is mid-life (45–64) at 29%, 12% of homes are rented, and 23% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 1,071 | 22% |
| Youth (15–24) | 673 | 14% |
| Young adults (25–44) | 1,034 | 21% |
| Mid-life (45–64) | 1,399 | 29% |
| Seniors (65+) | 643 | 13% |
Share of the 4,820 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 542 | 38% |
| Owned with a mortgage | 695 | 48% |
| Rented | 180 | 12% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 1,362 | 94% |
| Townhouses & semis | 38 | 3% |
| Flats & apartments | 46 | 3% |
Tenure and dwelling shares are of the roughly 1,446 occupied private dwellings in Collaroy Plateau.
- Median weekly rent
- $800
- Median monthly mortgage
- $3,467
- Average household size
- 3.2 people
- Median weekly family income
- $3,341
- Median weekly personal income
- $1,071
Community and culture
- Born overseas
- 1,099 (23%)
- Speaks a language other than English at home
- 559 (12%)
- Aboriginal and/or Torres Strait Islander
- 26 (1%)
Work and education
- Completed Year 12
- 2,424 (69%)
- Labour-force participation
- 69.8%
- Unemployment rate
- 2.3%
- Employed full-time
- 1,432
- Employed part-time
- 878
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
Weather and climate in Collaroy Plateau
Based on 2014–2023 records, the warmest month in Collaroy Plateau is January (average daytime high around 25.7°C) and the coolest is July (around 16.5°C). The area receives roughly 1084 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 25.7°C | 19.3°C | 104 mm |
| Feb | 25.1°C | 19°C | 119 mm |
| Mar | 24°C | 18°C | 186 mm |
| Apr | 21.9°C | 15°C | 100 mm |
| May | 19.2°C | 11.7°C | 56 mm |
| Jun | 16.5°C | 9.8°C | 74 mm |
| Jul | 16.5°C | 8.7°C | 70 mm |
| Aug | 17.3°C | 9.2°C | 67 mm |
| Sep | 19.6°C | 11.3°C | 55 mm |
| Oct | 21.8°C | 13.7°C | 92 mm |
| Nov | 22.8°C | 15.5°C | 78 mm |
| Dec | 24.7°C | 17.5°C | 83 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Collaroy Plateau
Where is Collaroy Plateau?
Collaroy Plateau is a suburb of New South Wales, Australia.
What is the population of Collaroy Plateau?
At the 2021 Census, Collaroy Plateau had a population of about 4,805.
Is Collaroy Plateau an advantaged area?
Collaroy Plateau has an ABS SEIFA score of 1137, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 98 out of 100 — more socio-economically advantaged than about 98% of Australian suburbs.
What is the weather like in Collaroy Plateau?
Collaroy Plateau has average daytime highs of about 21.3°C and overnight lows of about 14.1°C, with roughly 1,084 mm of rain across the year (based on 2014–2023 climate normals).
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