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Duffys Forest Postcode
New South Wales
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
How Duffys Forest Compares
Duffys Forest vs the NSW average and the national average (2021 Census, population-weighted).
| Metric | Duffys Forest | NSW avg | AU avg | Greater Sydney |
|---|---|---|---|---|
| Household income/wk | $4,250 +NSW | $1,931 | $1,836 | $2,181 |
| Rent/wk | $625 +NSW | $445 | $390 | $506 |
| Mortgage/month | $6,134 +NSW | $2,247 | $1,958 | $2,587 |
| Median age | 43 | 45.0 | 45.0 | 39.0 |
| SEIFA decile | 10/10 +NSW | 6.0/10 | 6.0/10 | 10.0/10 |
| Unemployment | 4.1% -NSW | 5.0% | 5.0% | 5.0% |
Green pill = at least 10% above the NSW average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Postcode 2084 covers Duffys Forest, an inland suburb of Sydney about 22 km from the city centre. It forms part of the Sydney - Northern Beaches region of New South Wales. Local government services are provided by Northern Beaches.
According to the 2021 Census, Duffys Forest has a population of 509 with a median age of 43. The median weekly household income is $4,250, above the NSW average. The unemployment rate is 4.1%, lower than the NSW average.
Housing in Duffys Forest includes a median weekly rent of $625, median monthly mortgage repayment of $6,134, with 152 total dwellings. These housing costs sit above the NSW average. Owner-occupied dwellings (owned or mortgaged) make up 82.2% of housing.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Duffys Forest scores in decile 10 out of 10, which is well above the national average.
Duffys Forest is served by A.G.B.U. Alexander Primary School.
Duffys Forest is part of the Warringah statistical area in New South Wales.
Duffys Forest Details
| Postcode | 2084 |
| State | New South Wales (NSW) |
| Phone Area Code | 02 |
| Population (2021) | 509 |
| Median Age | 43 years |
| Median Household Income (Census 2021) | $4,250/week |
| Median Personal Income (Census 2021) | $1,223/week |
| Median Weekly Rent (Census 2021) | $625 |
| Median Monthly Mortgage (Census 2021) | $6,134 |
| Average Household Size | 3.2 persons |
| Area | 4.6 km² |
| Population Density | 110/km² |
| Total Dwellings | 152 |
| Australian Citizens | 91.9% |
| Unemployment Rate | 4.1% |
| SEIFA IRSAD Decile | 10/10 (well above average) |
| Latitude | -33.67525 |
| Longitude | 151.19789 |
| Distance from Sydney | 22 km |
| Region (SA4) | Sydney - Northern Beaches |
| Area (SA3) | Warringah |
| Local Government | Northern Beaches |
| Federal Electorate | Mackellar |
Age Profile
Show counts
| 0–14 years | 96 (18.9%) |
| 15–24 years | 76 (14.9%) |
| 25–44 years | 84 (16.5%) |
| 45–64 years | 159 (31.2%) |
| 65+ years | 71 (13.9%) |
Housing Tenure
SEIFA Socio-economic Index
Index of Relative Socio-economic Advantage and Disadvantage (IRSAD), decile 10 of 10. Higher deciles indicate more advantage.
Health Conditions (2021 Census)
| Arthritis | 33 (6.5%) |
| Asthma | 27 (5.3%) |
| Diabetes | 15 (2.9%) |
| Heart Disease | 15 (2.9%) |
| Cancer | 12 (2.4%) |
| Lung Condition | 3 (0.6%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 0 (0.0%) |
| 1 vehicle | 18 (12.2%) |
| 2 vehicles | 61 (41.2%) |
| 3+ vehicles | 69 (46.6%) |
Schools in Duffys Forest
Suburbs Near Duffys Forest
Same Postcode (2084)
More Duffys Forest Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.