Suburbs Seaforth (NSW)

New South Wales · Suburb Profile

Seaforth NSW — Suburb Profile

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

The population of Seaforth NSW is 7,384 according to the 2021 Census. The median personal income in Seaforth is $1,263 per week ($65,676 per year). Median rent in Seaforth is $875 per week ($3,792 per month). Seaforth has a median age of 42 years, older than the national median of 38. Seaforth has a population density of 2375.9 people per km².

The most common overseas birthplace in Seaforth is England. The most common religion is No Religion (44% of residents). After English, the most spoken language is Mandarin. The median monthly mortgage repayment in Seaforth is $4,333.

There were 37 recorded offences in Seaforth in 2025-26, a rate of 5 offences per 1,000 people. The most common offence category was theft (16 offences).

Seaforth Map

📍
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📍 Seaforth, New South Wales — 33.7911°S, 151.2431°E

Crime: Low Med High 🏫 Schools (20)

Seaforth Population

0
residents (Census 2021)

Seaforth Median Income & Rent

💰
Median Income
$1,263/wk
$65,676 per year
#321 of 14,663
🏠
Median Rent
$875/wk
$3,792 per month
#37 of 14,663
👤
Median Age
42years
4 years older than national median
🏡
Mortgage
$4,333/mo
Avg household size: 3.1 · 0.8 per bedroom

Seaforth Demographics

Gender Split

Male 49.6% (3,660) Female 50.4% (3,719)

Population Density

2375.9
people per km²
7,384 people · 3.1 km²

Households

3.1
Avg household size
0.8
Persons per bedroom
$4,620
Family income/wk

Seaforth 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)

Seaforth Housing Tenure

🏠
Owned outright
47.0% 876 dwellings
🏦
Owned with mortgage
53.0% 988 dwellings

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

Seaforth Country of Birth

Australia
80.5%
England
13.1%
China
2.5%
Hong Kong
1.1%
Germany
0.7%
Iran
0.5%
Canada
0.4%
Greece
0.4%
India
0.4%
Croatia
0.4%

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

Seaforth Religion

No Religion
44.0%
Catholic
26.2%
Anglican
17.3%
Not stated
5.2%
Eastern Orthodox
2.9%
Uniting Church
1.6%
Christian (other)
1.5%
Christinty Prsbytrin Refrmd
1.4%

Source: ABS Census 2021 G14 — Religion by SAL

Seaforth Education Level

Year 12 or equivalent
85.5%
Year 10 or equivalent
9.2%
Year 11 or equivalent
3.8%
Year 9 or equivalent
1.5%

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

Seaforth Languages Spoken at Home

Mandarin
23.7%
Other
17.7%
Cantonese
11.1%
Greek
11.1%
Italian
9.5%
French
8.7%
Spanish
8.0%
German
6.7%
Croatian
3.6%

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

Seaforth Employment

💼
Employed full-time
40.5% 2,092 people
⏰
Employed part-time
21.3% 1,099 people
🔍
Unemployed
2.2% 114 people
🏠
Not in labour force
36.0% 1,862 people

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

Seaforth Qualifications

Bachelor Degree
49.5%
Postgraduate Degree
17.9%
Advanced Diploma/Diploma
15.9%
Certificate III/IV
11.2%
Graduate Diploma/Certificate
4.4%
Certificate I/II
1.1%

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

Seaforth Occupation

Professionals
41.3%
Managers
31.5%
Clerical & Administrative
9.8%
Technicians & Trade Workers
5.3%
Community & Personal Service
5.2%
Sales Workers
5.1%
Labourers
1.0%
Machinery Operators & Drivers
0.8%

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

Seaforth Field of Study

Management & Commerce
37.0%
Society & Culture
17.2%
Engineering
8.8%
Health
8.5%
Creative Arts
6.2%
Education
5.6%
Architecture & Building
4.6%
Information Technology
4.6%
Natural & Physical Sciences
4.3%
Food, Hospitality & Personal Services
2.0%
Agriculture & Environment
1.1%

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

Seaforth Dwelling Types

Separate house
91.6%
Semi-detached (2+ storey)
7.6%
Semi-detached (1 storey)
0.8%

Source: ABS Census 2021 G36 — Dwelling Structure by SAL

Seaforth Weekly Household Income

Nil/Negative/wk
1.6%
$1-$149/wk
0.6%
$150-$299/wk
0.9%
$300-$399/wk
0.4%
$400-$499/wk
2.0%
$500-$649/wk
2.0%
$650-$799/wk
2.7%
$800-$999/wk
2.9%
$1,000-$1,249/wk
3.7%
$1,250-$1,499/wk
3.4%
$1,500-$1,749/wk
2.8%
$1,750-$1,999/wk
3.4%
$2,000-$2,499/wk
6.6%
$2,500-$2,999/wk
6.0%
$3,000-$3,499/wk
6.0%
$3,500-$3,999/wk
3.9%
$4,000+/wk
51.1%

Source: ABS Census 2021 G33 — Household Income by SAL

Seaforth Marital Status

💍
Married
60.5% 3,428
↔️
Separated
1.3% 72
📋
Divorced
6.0% 340
🕊️
Widowed
3.7% 207
👤
Never married
28.6% 1,623

Source: ABS Census 2021 G05 — Marital Status by SAL

Seaforth Ancestry

English
32.5%
Australian
22.4%
Irish
10.5%
Other
8.6%
Scottish
8.5%
Chinese
4.7%
Italian
4.1%
German
3.2%
Greek
1.7%
Dutch
1.3%
South African
1.3%
New Zealander
1.2%

Source: ABS Census 2021 G08 — Ancestry by SAL

Seaforth School & University Attendance

Primary — Government
27.5%
Secondary — Other Non-Govt
16.9%
Secondary — Catholic
12.4%
Pre-school
11.3%
Secondary — Government
11.0%
Primary — Catholic
7.5%
Primary — Other Non-Govt
7.3%
Vocational Education
6.1%

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

Seaforth Need for Assistance

♿
Needs assistance
3.1% 447
✅
No need for assistance
96.9% 13,802

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

Seaforth Volunteering

🤝
Volunteer
21.0% 1,149
—
Not a volunteer
79.0% 4,316

Source: ABS Census 2021 G23 — Voluntary Work by SAL

Seaforth Monthly Mortgage Repayments

$0-$299/mo
14.7%
$300-$449/mo
0.8%
$450-$599/mo
0.8%
$600-$799/mo
3.4%
$800-$999/mo
1.8%
$1,000-$1,399/mo
6.2%
$1,400-$1,799/mo
8.0%
$1,800-$2,399/mo
21.9%
$2,400-$2,999/mo
13.9%
$3,000-$3,999/mo
28.6%

Source: ABS Census 2021 G38 — Mortgage Repayment by SAL

Seaforth How People Get to Work

Car (driver)
57.6%
Did not go to work
26.8%
Car (passenger)
5.1%
Bus
4.2%
Walked only
2.0%
Truck
1.1%
Bicycle
1.0%
Other
0.8%
Motorbike/Scooter
0.7%
Taxi/Rideshare
0.5%
Train
0.2%

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

Seaforth Car Ownership

0 vehicles
2.8%
1 vehicle
28.4%
2 vehicles
46.9%
3 vehicles
14.3%
4+ vehicles
7.5%

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

Seaforth Number of Bedrooms

1 bedroom
1.5%
2 bedrooms
6.9%
3 bedrooms
32.1%
4 bedrooms
38.2%
5 bedrooms
18.6%
6+ bedrooms
2.7%

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

Seaforth Population Mobility

12.9%
moved in the last year
36.3%
moved in the last 5 years
3.3%
unemployment rate (Census)
63.5%
labour force participation

Source: ABS Census 2021 G43 — Summary by SAL

Seaforth Indigenous Population

0.5%
Aboriginal & Torres Strait Islander
73
Indigenous residents
14,300
Non-Indigenous residents

Source: ABS Census 2021 G07 — Indigenous Status by SAL

Seaforth Long-term Health Conditions

Mental health
419
Asthma
218
Heart disease
158
Arthritis
136
Cancer
107
Diabetes
100
Lung condition
52
Kidney disease
51
Stroke
44
Dementia
19

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

Seaforth Personal Weekly Income Distribution

$0 or less/wk
12.5%
$1-$149/wk
4.9%
$150-$299/wk
4.3%
$300-$399/wk
1.7%
$400-$499/wk
1.4%
$500-$649/wk
2.4%
$650-$799/wk
5.4%
$800-$999/wk
6.3%
$1,000-$1,249/wk
6.5%
$1,250-$1,499/wk
5.8%
$1,500-$1,749/wk
5.6%
$1,750-$1,999/wk
5.0%
$2,000-$2,999/wk
11.4%
$3,000-$3,499/wk
4.9%
$3,500+/wk
22.0%

Source: ABS Census 2021 G17 — Personal Income by SAL

Seaforth Family Structure

Couple — children under 15
53.4%
Couple — no children under 15
21.5%
Couple — no children
17.3%
One parent — no children under 15
4.0%
One parent — children under 15
3.9%

Source: ABS Census 2021 G29 — Family Composition by SAL

Seaforth Military Service

🎖️
Current ADF — Regular
0.3% 17
🛡️
Current ADF — Reserves
0.1% 8
🏅
Previously served
1.5% 82
👤
Never served
98.0% 5,377

Source: ABS Census 2021 G22 — ADF Service by SAL

Seaforth Unpaid Carers

🤲
Provided unpaid assistance
11.3% 616
—
Did not provide
88.7% 4,825

Source: ABS Census 2021 G25 — Unpaid Assistance by SAL

Seaforth Children Ever Born

No children
28.7%
1 child
11.1%
2 children
38.7%
3 children
16.4%
4 children
4.6%
5+ children
0.4%

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

Seaforth When Migrants Arrived

Before 1951
26
1951–1960
68
1961–1970
178
1971–1980
187
1981–1990
299
1991–2000
372
2001–2010
640
2011–2015
344
2016
37
2017
46
2018
58
2019
61
2020
33
2021
11

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

Seaforth Unpaid Domestic Work

Less than 5 hours
23.1%
5–14 hours
32.7%
15–29 hours
16.6%
30+ hours
10.5%
Did not do domestic work
17.1%

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

Seaforth Household Size

1 person
11.5%
2 persons
27.5%
3 persons
16.7%
4 persons
29.0%
5 persons
12.0%
6+ persons
3.4%

Source: ABS Census 2021 G35 — Household Size by SAL

Seaforth Where Residents Moved From

Same address
6,162
Moved from NSW
587
Moved — same area (SA2)
185
Moved from overseas
75
Moved from VIC
15
Moved from ACT
10
Moved from SA
8
Moved from QLD
4
Moved from TAS
3

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

Seaforth Family Blending

Intact family — no other children
90.2%
Step family — no other children
6.7%
Blended family — no other children
2.5%
Other couple — children only
0.3%
Intact family — other children present
0.2%

Source: ABS Census 2021 G31 — Family Blending by SAL

Seaforth Crime Statistics

Reported offences in 2025-26 — 37 total

Theft
16
Other Against Property
10
Property Damage
4
Other Against Person
3
Drug Offences
2
Assault
1
Traffic
1

Offence trend by year:

2020
2021
2022
2023
2024
2025

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

Seaforth Schools

20
schools nearby
14
government
1138
avg ICSEA score
8,418
total students
Northbridge Public School Government
Primary · K-6 · 364 students
1181
ICSEA
Balgowlah Heights Public School Government
Primary · K-6 · 651 students
1177
ICSEA
St Philip Neri Catholic Primary School Catholic
Primary · K-6 · 102 students
1170
ICSEA
Balgowlah North Public School Government
Primary · K-6 · 381 students
1169
ICSEA
St Cecilia's Catholic Primary School Catholic
Primary · K-6 · 232 students
1168
ICSEA
Farmhouse Montessori School Independent
Primary · K-6 · 37 students
1165
ICSEA
Seaforth Public School Government
Primary · K-6 · 394 students
1165
ICSEA
Beauty Point Public School Government
Primary · K-6 · 205 students
1154
ICSEA
Killarney Heights Public School Government
Primary · K-6 · 661 students
1150
ICSEA
Manly West Public School Government
Primary · K-6 · 761 students
1147
ICSEA
Allambie Heights Public School Government
Primary · K-6 · 406 students
1138
ICSEA
Killarney Heights High School Government
Secondary · 7-12 · 969 students
1132
ICSEA
Manly Vale Public School Government
Primary · K-6 · 553 students
1129
ICSEA
St Kieran's Catholic Primary School Catholic
Primary · K-6 · 141 students
1122
ICSEA
Northern Beaches Secondary College Balgowlah Boys Campus Government
Secondary · 7-12 · 1,100 students
1115
ICSEA

Showing 15 of 20 schools

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

View all schools in Seaforth with map →

Seaforth Rent Prices & Affordability

21%
of income
Affordable
Household Income $4,184/wk
Median Rent $875/wk
Rent-to-Income 20.9%

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

If you earn X in Seaforth

≈ $18,131/month
Median rent $875/wk
Left after rent $3,309/wk
Rent share 20.9%

Cheaper alternatives with similar incomes

Table Top
Income: $1,052/wk Rent: $380/wk Save: $495/wk
Yellow Rock (Blue Mountains - NSW)
Income: $1,018/wk Rent: $400/wk Save: $475/wk
Newcastle West
Income: $1,022/wk Rent: $460/wk Save: $415/wk
Yarrawarrah
Income: $1,020/wk Rent: $520/wk Save: $355/wk
Austinmer
Income: $1,080/wk Rent: $550/wk Save: $325/wk
Greenwich
Income: $1,457/wk Rent: $550/wk Save: $325/wk
Little Bay
Income: $1,141/wk Rent: $590/wk Save: $285/wk
Drummoyne
Income: $1,388/wk Rent: $600/wk Save: $275/wk

Seaforth vs State & National Average

Nearby Suburbs in NSW

Werrington County
Pop: 3,698 Income: $863/wk Rent: $415/wk
Tregear
Pop: 3,700 Income: $518/wk Rent: $300/wk
East Lindfield
Pop: 3,710 Income: $1,132/wk Rent: $990/wk
Mount Hutton (NSW)
Pop: 3,712 Income: $710/wk Rent: $395/wk
Burraneer
Pop: 3,719 Income: $1,209/wk Rent: $660/wk
Denistone
Pop: 3,726 Income: $970/wk Rent: $600/wk

Compare Seaforth (NSW)

Seaforth (NSW) vs Werrington County →Seaforth (NSW) vs Tregear →Seaforth (NSW) vs East Lindfield →Seaforth (NSW) vs Mount Hutton (NSW) →

Frequently Asked Questions About Seaforth

What is the population of Seaforth NSW?

The population of Seaforth NSW is 7,384 according to the ABS Census 2021.The suburb has a population density of 2375.9 people per km².Seaforth is ranked #984 out of 14,663 suburbs by population.

What is the median income in Seaforth?

The median personal income in Seaforth NSW is $1,263 per week, or $65,676 per year.The median household income is $4,184 per week.Family income is $4,620 per week.Seaforth is ranked #321 by income out of 14,663 Australian suburbs.

How much is rent in Seaforth?

Median rent in Seaforth NSW is $875 per week ($3,792 per month).Rent represents 20.9% of household income, which is considered affordable.Seaforth ranks #37 out of 14,663 suburbs by rent.

What are mortgage repayments in Seaforth?

The median monthly mortgage repayment in Seaforth NSW is $4,333. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Seaforth?

The median age in Seaforth NSW is 42 years.This is older than the national median age of 38 years.

Is Seaforth a good suburb to live in?

Seaforth is a suburb in New South Wales with a population of 7,384.The median income is $1,263/wk, which is above the NSW average of $781/wk.Rent affordability is rated as affordable (20.9% 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: 13524. All dollar figures in AUD.