Duffys Forest, NSW 2084 — Suburb Profile
Last reviewed: · By Knowburb Research Team
In short
Duffys Forest is a suburb of New South Wales, postcode 2084, home to 509 residents with an established residential profile. Located in the Northern Beaches local government area and roughly 24 km from the Sydney CBD.
Snapshot
Demographics
- Population
- 509
- Median age
- 43 years
- Median household income
- $4,250 /week
- Median personal income
- $1,223 /week
- Median family income
- $4,374 /week
- Average household size
- 3.2
- Persons per bedroom
- 0.8
- Local government area
- Northern Beaches
- Statistical region (SA4)
- Sydney - Northern Beaches
- Remoteness classification
- Major Cities of Australia
- Federal electorate
- Mackellar
Property & cost of living
- Median rent
- $625 /week
- Median monthly mortgage
- $6,134
- Rent share of household income
- 15%
Schools
- Terrey Hills Public School
- Gibberagong Environmental Education Centre
- Berowra Public School
Transport
Transport data refreshes monthly from state GTFS feeds.
Lifestyle & amenities
No cafes, shops, parks, gyms, libraries or playgrounds are listed in OpenStreetMap within roughly 1.5 km of this locality. Genuinely remote localities typically rely on services in the nearest town.
Climate
- Warmest month: Jan (26.0°C avg max)
- Coolest month: Jul (16.4°C avg max)
- Annual rainfall: 1211 mm
- Reference station: Sydney (Observatory Hill), 23.2 km away
NBN & connectivity
Fibre to the Premises serves 71.1% of the 187 resolvable premises in Duffys Forest. Most premises here have a fibre cable running directly into the property — the fastest and most reliable NBN option, with plans available up to NBN 1000.
- Fibre to the Premises: 71.1%
- Fibre to the Curb: 28.9%
Safety
- Recorded offences: 112 across postcode 2084 in the year to Dec 2025 (down 16% on the prior year).
- Most common categories: 34 other offences, 23 violent offences, 17 property damage.
Frequently asked questions
What is the population of Duffys Forest?
Duffys Forest (NSW 2084) had 509 residents at the most recent ABS Census. The median age is 43. It sits within the Northern Beaches local government area.
What is the median rent in Duffys Forest?
The median advertised rent in Duffys Forest is $625/week, based on SQM Research listings data. Rents vary by property type, bedrooms and condition.
Are there schools in Duffys Forest?
Yes — 3 schools are listed within or near Duffys Forest covering government sectors. Nearest include: Terrey Hills Public School (3.9 km), Gibberagong Environmental Education Centre (5.5 km), Berowra Public School (7.3 km). School data sourced from ACARA and state education departments.
What NBN technology is available in Duffys Forest?
Duffys Forest is predominantly served by Fibre to the Premises (71.1% of premises). Coverage data is sourced from the NBN upgrade map aggregated from NBN Co address checks.
How safe is Duffys Forest?
Across postcode 2084, 112 offences were recorded in the 12 months to Dec 2025. The most common offence categories were other (34), violent (23), property damage (17). Crime statistics are recorded by area (postcode or LGA), not by individual suburb. Data sourced from each state's crime statistics agency.
What is the climate like in Duffys Forest?
In Duffys Forest, mean daily temperatures range from 13.8°C to 21.8°C and annual rainfall is 1,211 mm measured at the Sydney (Observatory Hill) weather station (23.2 km away). Long-term averages from the Bureau of Meteorology.
Sources & methodology
Demographics from ABS Census. Property data from SQM Research. Climate from Bureau of Meteorology. Schools from ACARA. NBN from NBN Co. Amenities from OpenStreetMap. See full methodology.
Additional sources for this profile: