New South Wales · Suburb Profile

Duffys Forest NSW — Suburb Profile

Population, median income, rent prices, housing costs and demographics for Duffys Forest, New South Wales. ABS Census 2021.

The population of Duffys Forest NSW is 509 according to the 2021 Census. The median personal income in Duffys Forest is $1,223 per week ($63,596 per year). Median rent in Duffys Forest is $625 per week ($2,708 per month). Duffys Forest has a median age of 43 years, older than the national median of 38. Duffys Forest has a population density of 110.2 people per km².

The most common overseas birthplace in Duffys Forest is England. The most common religion is No Religion (44% of residents). After English, the most spoken language is Italian. The median monthly mortgage repayment in Duffys Forest is $6,134.

There were 1 recorded offences in Duffys Forest in 2025-26, a rate of 2 offences per 1,000 people. The most common offence category was other against person (1 offences).

Duffys Forest Map

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Duffys Forest Population

residents (Census 2021)

Duffys Forest Median Income & Rent

💰

Median Income

$1,223/wk

$63,596 per year

#380 of 14,663

🏠

Median Rent

$625/wk

$2,708 per month

#169 of 14,663

👤

Median Age

43years

5 years older than national median

🏡

Mortgage

$6,134/mo

Avg household size: 3.2 · 0.8 per bedroom

Duffys Forest Demographics

Gender Split

Male 51.9% (267) Female 48.1% (247)

Population Density

110.2

people per km²

509 people · 4.6 km²

Households

3.2

Avg household size

0.8

Persons per bedroom

$4,374

Family income/wk

Duffys Forest Age Distribution

0-4

5-9

10-14

15-19

20-24

25-29

30-34

35-39

40-44

45-49

50-54

55-59

60-64

65-69

70-74

75-79

80-84

85+

♂ Male ♀ Female

Source: ABS Census 2021 — Suburb & Locality (SAL)

Duffys Forest Housing Tenure

🏠

Owned outright

56.8% 71 dwellings

🏦

Owned with mortgage

43.2% 54 dwellings

Source: ABS Census 2021 — Suburb & Locality (SAL)

Duffys Forest Country of Birth

Australia

85.5%

England

10.6%

China

4.0%

Source: ABS Census 2021 G09 — Country of Birth by SAL

Duffys Forest Religion

No Religion

44.0%

Catholic

23.7%

Anglican

18.3%

Uniting Church

4.8%

Not stated

4.2%

Othr Protestnt

1.8%

Christinty Prsbytrin Refrmd

1.6%

Buddhism

1.6%

Source: ABS Census 2021 G14 — Religion by SAL

Duffys Forest Education Level

Year 12 or equivalent

78.7%

Year 10 or equivalent

14.2%

Year 11 or equivalent

4.4%

Year 9 or equivalent

2.7%

Source: ABS Census 2021 G16 — Highest Year of School by SAL

Duffys Forest Languages Spoken at Home

Italian

47.6%

Arabic

19.0%

Mandarin

19.0%

Cantonese

14.3%

Source: ABS Census 2021 G13 — Language Spoken at Home by SAL

Duffys Forest Employment

💼

Employed full-time

34.5% 131 people

⏰

Employed part-time

26.8% 102 people

🔍

Unemployed

3.4% 13 people

🏠

Not in labour force

35.3% 134 people

Source: ABS Census 2021 G46 — Labour Force Status by SAL

Duffys Forest Qualifications

Bachelor Degree

45.5%

Certificate III/IV

18.6%

Advanced Diploma/Diploma

18.2%

Postgraduate Degree

9.5%

Graduate Diploma/Certificate

5.8%

Certificate I/II

2.5%

Source: ABS Census 2021 G49 — Non-School Qualification by SAL

Duffys Forest Occupation

Managers

37.8%

Professionals

28.6%

Sales Workers

9.7%

Technicians & Trade Workers

8.6%

Clerical & Administrative

8.1%

Community & Personal Service

3.8%

Machinery Operators & Drivers

1.6%

Labourers

1.6%

Source: ABS Census 2021 G51 — Industry of Employment by Occupation

Duffys Forest Field of Study

Management & Commerce

37.5%

Society & Culture

13.0%

Engineering

12.5%

Health

10.3%

Education

7.6%

Architecture & Building

6.0%

Agriculture & Environment

4.3%

Natural & Physical Sciences

3.3%

Creative Arts

2.2%

Information Technology

1.6%

Food, Hospitality & Personal Services

1.6%

Source: ABS Census 2021 G51 — Field of Study by SAL

Duffys Forest Dwelling Types

Separate house

100.0%

Source: ABS Census 2021 G36 — Dwelling Structure by SAL

Duffys Forest Weekly Household Income

Nil/Negative/wk

3.6%

$400-$499/wk

2.2%

$500-$649/wk

2.2%

$800-$999/wk

7.3%

$1,000-$1,249/wk

2.9%

$1,250-$1,499/wk

5.8%

$1,500-$1,749/wk

2.2%

$1,750-$1,999/wk

2.9%

$2,000-$2,499/wk

5.1%

$2,500-$2,999/wk

5.1%

$3,000-$3,499/wk

5.1%

$3,500-$3,999/wk

5.1%

$4,000+/wk

50.4%

Source: ABS Census 2021 G33 — Household Income by SAL

Duffys Forest Marital Status

💍

Married

59.5% 247

↔️

Separated

1.7% 7

📋

Divorced

7.0% 29

🕊️

Widowed

0.7% 3

👤

Never married

31.1% 129

Source: ABS Census 2021 G05 — Marital Status by SAL

Duffys Forest Ancestry

English

31.9%

Australian

21.2%

Scottish

10.3%

Irish

9.0%

Other

8.0%

Italian

6.2%

Chinese

3.2%

German

2.9%

South African

2.7%

New Zealander

2.0%

Lebanese

1.4%

Hungarian

1.3%

Source: ABS Census 2021 G08 — Ancestry by SAL

Duffys Forest School & University Attendance

Secondary — Other Non-Govt

34.5%

Primary — Other Non-Govt

18.1%

Primary — Government

17.2%

Secondary — Government

9.5%

Secondary — Catholic

7.8%

Vocational Education

6.9%

Pre-school

6.0%

Source: ABS Census 2021 G15 — Type of Educational Institution by SAL

Duffys Forest Need for Assistance

♿

Needs assistance

1.4% 13

✅

No need for assistance

98.6% 946

Source: ABS Census 2021 G18 — Core Activity Need for Assistance by SAL

Duffys Forest Volunteering

🤝

Volunteer

22.3% 89

—

Not a volunteer

77.7% 310

Source: ABS Census 2021 G23 — Voluntary Work by SAL

Duffys Forest Monthly Mortgage Repayments

$0-$299/mo

62.5%

$3,000-$3,999/mo

37.5%

Source: ABS Census 2021 G38 — Mortgage Repayment by SAL

Duffys Forest How People Get to Work

Car (driver)

74.4%

Did not go to work

19.5%

Walked only

6.0%

Source: ABS Census 2021 G62 — Method of Travel to Work by SAL

Duffys Forest Car Ownership

1 vehicle

12.2%

2 vehicles

41.2%

3 vehicles

15.5%

4+ vehicles

31.1%

Source: ABS Census 2021 G34 — Motor Vehicles per Dwelling by SAL

Duffys Forest Number of Bedrooms

1 bedroom

6.0%

2 bedrooms

4.7%

3 bedrooms

14.7%

4 bedrooms

25.3%

5 bedrooms

36.0%

6+ bedrooms

13.3%

Source: ABS Census 2021 G41 — Number of Bedrooms by SAL

Duffys Forest Population Mobility

11.0%

moved in the last year

35.5%

moved in the last 5 years

3.4%

unemployment rate (Census)

64.2%

labour force participation

Source: ABS Census 2021 G43 — Summary by SAL

Duffys Forest Indigenous Population

0.0%

Aboriginal & Torres Strait Islander

Indigenous residents

990

Non-Indigenous residents

Source: ABS Census 2021 G07 — Indigenous Status by SAL

Duffys Forest Long-term Health Conditions

Mental health

Asthma

Arthritis

Heart disease

Diabetes

Cancer

Lung condition

Source: ABS Census 2021 G19 — Long-term Health Conditions by SAL

Duffys Forest Personal Weekly Income Distribution

$0 or less/wk

13.1%

$1-$149/wk

3.1%

$150-$299/wk

2.8%

$300-$399/wk

1.7%

$400-$499/wk

0.8%

$500-$649/wk

1.7%

$650-$799/wk

7.0%

$800-$999/wk

5.0%

$1,000-$1,249/wk

10.3%

$1,250-$1,499/wk

8.9%

$1,500-$1,749/wk

6.1%

$1,750-$1,999/wk

4.2%

$2,000-$2,999/wk

8.6%

$3,000-$3,499/wk

6.1%

$3,500+/wk

20.6%

Source: ABS Census 2021 G17 — Personal Income by SAL

Duffys Forest Family Structure

Couple — children under 15

44.6%

Couple — no children under 15

30.0%

Couple — no children

19.9%

One parent — no children under 15

3.1%

One parent — children under 15

2.4%

Source: ABS Census 2021 G29 — Family Composition by SAL

Duffys Forest Military Service

🏅

Previously served

2.5% 10

👤

Never served

97.5% 389

Source: ABS Census 2021 G22 — ADF Service by SAL

Duffys Forest Unpaid Carers

🤲

Provided unpaid assistance

13.1% 52

—

Did not provide

86.9% 346

Source: ABS Census 2021 G25 — Unpaid Assistance by SAL

Duffys Forest Children Ever Born

No children

36.2%

1 child

2.3%

2 children

37.4%

3 children

17.2%

4 children

6.9%

Source: ABS Census 2021 G28 — Children Ever Born by SAL

Duffys Forest When Migrants Arrived

Before 1951

1951–1960

1961–1970

1971–1980

1981–1990

1991–2000

2001–2010

2011–2015

2017

Source: ABS Census 2021 G10 — Year of Arrival by SAL

Duffys Forest Unpaid Domestic Work

Less than 5 hours

19.6%

5–14 hours

32.7%

15–29 hours

15.3%

30+ hours

12.4%

Did not do domestic work

20.0%

Source: ABS Census 2021 G24 — Unpaid Domestic Work by SAL

Duffys Forest Household Size

1 person

11.6%

2 persons

27.1%

3 persons

15.5%

4 persons

30.3%

5 persons

7.1%

6+ persons

8.4%

Source: ABS Census 2021 G35 — Household Size by SAL

Duffys Forest Where Residents Moved From

Same address

439

Moved from NSW

Moved — same area (SA2)

Source: ABS Census 2021 G44 — Address 1 Year Ago by SAL

Duffys Forest Family Blending

Intact family — no other children

84.9%

Step family — no other children

10.5%

Blended family — no other children

4.7%

Source: ABS Census 2021 G31 — Family Blending by SAL

Duffys Forest Crime Statistics

Reported offences in 2025-26 — 1 total

Other Against Person

Offence trend by year:

2020

2021

2022

2023

2024

2025

Source: NSW BOCSAR — bocsar.nsw.gov.au

Duffys Forest Schools

schools nearby

government

1082

avg ICSEA score

1,563

total students

Sydney Japanese International School Independent

Primary · K-9 · 190 students

1137

ICSEA

Northern Beaches Christian School Independent

Combined · K-12 · 1,228 students

1134

ICSEA

Kinma School Independent

Primary · K-6 · 67 students

1096

ICSEA

A.G.B.U. Alexander Primary School Independent

Primary · K-6 · 78 students

962

ICSEA

Mosman Preparatory School Outdoor Education Centre Independent

Primary

Source: ACARA — Australian Curriculum, Assessment and Reporting Authority, 2025. ICSEA = Index of Community Socio-Educational Advantage (national average 1000).

View all schools in Duffys Forest with map →

Duffys Forest Rent Prices & Affordability

15%

of income

Affordable

Household Income $4,250/wk

Median Rent $625/wk

Rent-to-Income 14.7%

Rent is under 25% of household income — generally considered affordable.

If you earn X in Duffys Forest

Your weekly income

≈ $18,417/month

Median rent $625/wk

Left after rent $3,625/wk

Rent share 14.7%

Cheaper alternatives with similar incomes

Kurrajong Heights

Income: $1,055/wk Rent: $450/wk Save: $175/wk

Gundaroo

Income: $1,352/wk Rent: $475/wk Save: $150/wk

Oatley

Income: $1,064/wk Rent: $490/wk Save: $135/wk

Cronulla

Income: $1,179/wk Rent: $500/wk Save: $125/wk

Russell Lea

Income: $1,133/wk Rent: $520/wk Save: $105/wk

Beecroft

Income: $1,076/wk Rent: $590/wk Save: $35/wk

Turramurra

Income: $1,144/wk Rent: $590/wk Save: $35/wk

Allambie Heights

Income: $1,006/wk Rent: $600/wk Save: $25/wk

Duffys Forest vs State & National Average

Nearby Suburbs in NSW

Jugiong

Pop: 255 Income: $754/wk Rent: $185/wk

Peel

Pop: 256 Income: $1,048/wk Rent: $410/wk

James Creek

Pop: 257 Income: $779/wk Rent: $423/wk

Tacoma South

Pop: 257 Income: $860/wk Rent: $440/wk

Collingullie

Pop: 258 Income: $877/wk Rent: $295/wk

Merungle Hill

Pop: 258 Income: $734/wk Rent: $241/wk

Compare Duffys Forest

Duffys Forest vs Jugiong →Duffys Forest vs Peel →Duffys Forest vs James Creek →Duffys Forest vs Tacoma South →

Frequently Asked Questions About Duffys Forest

What is the population of Duffys Forest NSW?

The population of Duffys Forest NSW is 509 according to the ABS Census 2021.The suburb has a population density of 110.2 people per km².Duffys Forest is ranked #5,000 out of 14,663 suburbs by population.

What is the median income in Duffys Forest?

The median personal income in Duffys Forest NSW is $1,223 per week, or $63,596 per year.The median household income is $4,250 per week.Family income is $4,374 per week.Duffys Forest is ranked #380 by income out of 14,663 Australian suburbs.

How much is rent in Duffys Forest?

Median rent in Duffys Forest NSW is $625 per week ($2,708 per month).Rent represents 14.7% of household income, which is considered affordable.Duffys Forest ranks #169 out of 14,663 suburbs by rent.

What are mortgage repayments in Duffys Forest?

The median monthly mortgage repayment in Duffys Forest NSW is $6,134. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Duffys Forest?

The median age in Duffys Forest NSW is 43 years.This is older than the national median age of 38 years.

Is Duffys Forest a good suburb to live in?

Duffys Forest is a suburb in New South Wales with a population of 509.The median income is $1,223/wk, which is above the NSW average of $781/wk.Rent affordability is rated as affordable (14.7% of household income). See the full suburb profile above for detailed statistics.

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Data: Australian Bureau of Statistics, Census of Population and Housing 2021. SA2 area: 11304. All dollar figures in AUD.