Castlecrag, NSW: suburb profile

The population of Castlecrag NSW is 2,965 according to the 2021 Census. The median personal income in Castlecrag is $1,446 per week ($75,192 per year). Median rent in Castlecrag is $1,010 per week ($4,377 per month). Castlecrag has a median age of 47 years, older than the national median of 38. Castlecrag has a population density of 1,969 people per km².

The most common overseas birthplace in Castlecrag is England. The most common religion is No religion (43.0% of residents). After English, the most spoken language is Mandarin. The median monthly mortgage repayment in Castlecrag is $4,333.

There were 12 recorded offences in Castlecrag in 2025-26, a rate of 4 offences per 1,000 people. The most common offence category was theft (8 offences).

Population
2,965
Census 2021
Median income
$1,446/wk
Personal, Census 2021
Median rent
$1,010/wk
Weekly, Census 2021
Median age
47years
Census 2021

Valid: Census 2021 · Source: ABS Census of Population and Housing 2021; offences from NSW BOCSAR (bocsar.nsw.gov.au), 2025-26.

Castlecrag vs the typical NSW suburb

The median personal income in Castlecrag is $1,446 a week, 89% above the typical NSW suburb ($765). That ranks 59th of 2,150 NSW suburbs with 200 or more residents. Median rent is $1,010 a week, $625 more than the typical NSW suburb. Rent takes 21.6% of the median household income here, against 22.6% in the typical NSW suburb. The median resident is 47, 4 years older than in the typical NSW suburb (43).

The typical suburb is the median across suburbs with 200 or more residents. ABS Census 2021, calculated by GDP.com.au.
MeasureCastlecragTypical NSWDifferenceTypical Australia
Personal income$1,446/wk$765/wk +89%$766/wk
Household income$4,675/wk$1,704/wk +174%$1,637/wk
Rent$1,010/wk$385/wk +162%$330/wk
Mortgage repayment$4,333/mo$1,965/mo +121%$1,733/mo
Median age4743 +4 yrs42
Rent share of household income21.6%22.6% −1.0 pts20.3%
Income, rent and mortgage against the typical suburb Valid: Census 2021 · Source: ABS, calculated by GDP.com.au
Bar chart of median income, rent and mortgage repayment in Castlecrag, the typical NSW suburb and the typical Australian suburb.

Castlecrag Population

2,965 residents at the 2021 Census.

Castlecrag Median Income & Rent

Median Income
$1,446/wk
$75,192 per year
Ranked 147 of 14,663
Median Rent
$1,010/wk
$4,377 per month
Ranked 17 of 14,663
Median Age
47years
9 years older than the national median
Mortgage
$4,333/mo
Avg household size: 3 · 0.8 per bedroom

Valid: Census 2021 · Source: ABS Census of Population and Housing.

Castlecrag Rent Prices & Affordability

22% of median household income goes on median rent

Marks at 25% and 35%. Band: affordable.

Household income $4,675/wk
Median rent $1,010/wk
Rent to income 21.6%

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

Median rent in Castlecrag against your income

About $20,258 a month
Median rent $1,010/wk
Left after rent $3,665/wk
Rent share 21.6%

Castlecrag Schools

25
schools nearby
17
government
1158
avg ICSEA score
11,993
total students
North Sydney Girls High School Government
Secondary · 7-12 · 916 students
1203
ICSEA
North Sydney Boys High School Government
Secondary · 7-12 · 933 students
1195
ICSEA
Sacred Heart Catholic Primary School Catholic
Primary · K-6 · 373 students
1189
ICSEA
Northbridge Public School Government
Primary · K-6 · 364 students
1181
ICSEA
Queenwood Independent
Combined · K-12 · 816 students
1172
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
Cammeray Public School Government
Primary · K-6 · 622 students
1168
ICSEA
Castle Cove Public School Government
Primary · K-6 · 273 students
1167
ICSEA
Farmhouse Montessori School Independent
Primary · K-6 · 37 students
1165
ICSEA
Middle Harbour Public School Government
Primary · K-6 · 423 students
1162
ICSEA
St Thomas' Catholic Primary School Catholic
Primary · K-6 · 277 students
1161
ICSEA
Mosman Public School Government
Primary · K-6 · 458 students
1157
ICSEA
Beauty Point Public School Government
Primary · K-6 · 205 students
1154
ICSEA
Willoughby Girls High School Government
Secondary · 7-12 · 1,036 students
1152
ICSEA

Showing 15 of 25 schools.

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

All schools near Castlecrag, with a map

Castlecrag Map

Castlecrag, New South Wales Map data: OpenStreetMap
Loading map…

Castlecrag, New South Wales: 33.8003°S, 151.2200°E

Castlecrag Circle size: offences per 1,000 residents Schools (25)

People in Castlecrag

Demographics

Gender Split

Male 50.1% (1,486) Female 49.9% (1,479)

Population Density

1,969
people per km²
2,965 people · 1.5 km²

Households

3
Avg household size
0.8
Persons per bedroom
$4,857
Family income/wk

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 and Locality (SAL)

Most common overseas birthplaces

England
5.9%
China
3.4%
Hong Kong
2.0%
New Zealand
1.9%
United States of America
1.7%
South Africa
1.6%
Malaysia
1.5%

Shares are of all residents. Source: ABS Census 2021, G09 Country of Birth by SAL

Most common languages at home other than English

Mandarin
4.3%
Cantonese
4.1%
French
1.0%
German
0.9%
Japanese
0.9%
Korean
0.6%
Italian
0.6%

Shares are of all residents. Source: ABS Census 2021, G13 Language Used at Home by SAL

Ancestry

English
36.5%
Australian
27.4%
Irish
13.7%
Chinese
12.7%
Scottish
12.0%
German
4.7%
Italian
3.6%
Greek
2.2%
Hungarian
1.5%
Polish
1.5%
Dutch
1.4%

Shares are of the suburb population. People can report up to two ancestries, so shares add to more than 100%. Source: ABS Census 2021, G08 Ancestry by SAL

Religion

No religion
43.0%
Catholic
22.5%
Anglican
14.9%
Not stated
4.4%
Judaism
2.4%
Eastern Orthodox
2.1%
Christian (other)
1.7%
Uniting Church
1.5%

Source: ABS Census 2021, G14 Religion by SAL

Indigenous Population

0.1%
Aboriginal & Torres Strait Islander

Source: ABS Census 2021, G07 Indigenous Status by SAL

Marital Status

Married
61.5% 1,490
Separated
1.3% 31
Divorced
4.6% 111
Widowed
3.6% 88
Never married
29.0% 704

Source: ABS Census 2021, G05 Marital Status by SAL

Family Structure

Couple: children under 15
43.2%
Couple: no children under 15
28.4%
Couple: no children
21.2%
One parent: no children under 15
4.4%
One parent: children under 15
2.9%

Source: ABS Census 2021, G29 Family Composition by SAL

Household Size

1 person
11.0%
2 persons
32.6%
3 persons
18.8%
4 persons
24.4%
5 persons
10.3%
6+ persons
2.9%

Source: ABS Census 2021, G35 Household Size by SAL

Homes in Castlecrag

Housing Tenure

Of the 955 occupied private dwellings in Castlecrag at the 2021 Census, 10.9% were rented, 48.6% owned outright and 38.5% owned with a mortgage.

Other tenure type
1.5% 14 dwellings
Owned outright
48.6% 464 dwellings
Owned with mortgage
38.5% 368 dwellings
Rented
10.9% 104 dwellings
Tenure type not stated
0.4% 4 dwellings

Source: ABS Census 2021, Suburb and Locality (SAL)

Dwelling Types

Separate house
98.8%
Semi-detached (1 storey)
0.9%
Semi-detached (2+ storey)
0.3%

Source: ABS Census 2021, G36 Dwelling Structure by SAL

Number of Bedrooms

1 bedroom
1.7%
2 bedrooms
6.5%
3 bedrooms
28.3%
4 bedrooms
45.4%
5 bedrooms
16.8%
6+ bedrooms
1.4%

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

Monthly Mortgage Repayments

$0-$299/mo
13.9%
$450-$599/mo
3.5%
$600-$799/mo
4.9%
$800-$999/mo
5.6%
$1,000-$1,399/mo
8.3%
$1,400-$1,799/mo
8.3%
$1,800-$2,399/mo
18.1%
$2,400-$2,999/mo
10.4%
$3,000-$3,999/mo
27.1%

Source: ABS Census 2021, G38 Mortgage Repayment by SAL

Car Ownership

0 vehicles
2.0%
1 vehicle
27.7%
2 vehicles
47.3%
3 vehicles
16.4%
4+ vehicles
6.5%

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

Work, income and education in Castlecrag

Employment

Employed full-time
37.3% 844 people
Employed part-time
22.0% 497 people
Unemployed
2.9% 65 people
Not in labour force
37.8% 854 people

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

Occupation

Professionals
50.3%
Managers
29.4%
Clerical & Administrative
9.4%
Sales Workers
4.5%
Community & Personal Service
2.6%
Technicians & Trade Workers
2.6%
Labourers
0.9%
Machinery Operators & Drivers
0.4%

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

Weekly Household Income

Nil/Negative/wk
1.4%
$1-$149/wk
1.1%
$150-$299/wk
0.3%
$300-$399/wk
0.7%
$400-$499/wk
1.0%
$500-$649/wk
0.8%
$650-$799/wk
1.4%
$800-$999/wk
2.0%
$1,000-$1,249/wk
3.1%
$1,250-$1,499/wk
3.4%
$1,500-$1,749/wk
2.8%
$1,750-$1,999/wk
3.7%
$2,000-$2,499/wk
7.6%
$2,500-$2,999/wk
3.9%
$3,000-$3,499/wk
6.3%
$3,500-$3,999/wk
3.6%
$4,000+/wk
56.8%

Source: ABS Census 2021, G33 Household Income by SAL

Personal Weekly Income Distribution

$0 or less/wk
13.1%
$1-$149/wk
5.1%
$150-$299/wk
3.9%
$300-$399/wk
1.6%
$400-$499/wk
1.4%
$500-$649/wk
1.7%
$650-$799/wk
3.9%
$800-$999/wk
5.0%
$1,000-$1,249/wk
6.1%
$1,250-$1,499/wk
6.1%
$1,500-$1,749/wk
5.3%
$1,750-$1,999/wk
4.7%
$2,000-$2,999/wk
10.8%
$3,000-$3,499/wk
4.6%
$3,500+/wk
26.6%

Source: ABS Census 2021, G17 Personal Income by SAL

How People Get to Work

Car (driver)
61.2%
Did not go to work
25.3%
Car (passenger)
3.6%
Bus
3.3%
Walked only
2.9%
Bicycle
1.0%
Motorbike/Scooter
0.9%
Taxi/Rideshare
0.7%
Truck
0.5%
Other
0.5%

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

Education Level

Year 12 or equivalent
91.7%
Year 10 or equivalent
5.7%
Year 11 or equivalent
2.1%
Year 9 or equivalent
0.5%

Shares are of people whose highest year of school is Year 9 to 12 only. Source: ABS Census 2021, G16 Highest Year of School by SAL

Qualifications

Bachelor Degree
52.8%
Postgraduate Degree
24.8%
Advanced Diploma/Diploma
11.0%
Graduate Diploma/Certificate
5.9%
Certificate III/IV
5.0%
Certificate I/II
0.5%

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

Field of Study

Management & Commerce
35.3%
Society & Culture
19.7%
Health
11.7%
Engineering
7.6%
Creative Arts
6.1%
Natural & Physical Sciences
5.1%
Architecture & Building
4.8%
Information Technology
4.4%
Education
3.7%
Agriculture & Environment
0.9%
Food, Hospitality & Personal Services
0.9%

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

School & University Attendance

Secondary: Other Non-Govt
27.2%
Primary: Government
17.1%
Primary: Other Non-Govt
13.7%
Secondary: Government
13.0%
Secondary: Catholic
11.1%
Pre-school
8.4%
Primary: Catholic
5.4%
Vocational Education
4.1%

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

More from the 2021 Census

Need for Assistance

Does not have need for assistance
94.9%
Has need for assistance
2.7%
Need for assistance not stated
2.5%

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

Long-term Health Conditions

Mental health
148
Asthma
99
Arthritis
82
Heart disease
70
Cancer
51
Diabetes
47
Lung condition
28
Kidney disease
12
Stroke
8
Dementia
6

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

Unpaid Carers

Provided unpaid assistance
14.0% 333
Did not provide
86.0% 2,039

Source: ABS Census 2021, G25 Unpaid Assistance by SAL

Volunteering

Volunteer
25.9% 613
Not a volunteer
74.1% 1,754

Source: ABS Census 2021, G23 Voluntary Work by SAL

Military Service

Previously served
1.0% 23
Never served
99.0% 2,347

Source: ABS Census 2021, G22 ADF Service by SAL

Children Ever Born

No children
32.2%
1 child
9.3%
2 children
37.6%
3 children
16.6%
4 children
4.0%
5+ children
0.3%

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

When Migrants Arrived

Before 1951
21
1951: 1960
37
1961: 1970
96
1971: 1980
119
1981: 1990
191
1991: 2000
130
2001: 2010
170
2011: 2015
93
2016
15
2017
20
2018
4
2019
19
2020
10
2021
5

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

Population Mobility

9.1%
moved in the last year
30.4%
moved in the last 5 years
4.4%
unemployment rate (Census)
62.6%
labour force participation

Source: ABS Census 2021, G43 Summary by SAL

Where Residents Moved From

Same address
2,622
Moved from NSW
156
Moved: same area (SA2)
49
Moved from overseas
41
Moved from VIC
8
Moved from WA
3
Moved from QLD
3

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

Unpaid Domestic Work

Less than 5 hours
23.9%
5: 14 hours
32.6%
15: 29 hours
18.1%
30+ hours
10.2%
Did not do domestic work
15.2%

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

Family Blending

Intact family: no other children
91.3%
Step family: no other children
6.5%
Blended family: no other children
1.6%
Other couple: children only
0.6%

Source: ABS Census 2021, G31 Family Blending by SAL

Castlecrag Crime Statistics

12 reported offences in 2025-26, by category.

Theft
8
Assault
1
Sexual Offences
1
Other Against Person
1
Property Damage
1

Total offences by year

2020
2021
2022
2023
2024
2025

Source: NSW BOCSAR (bocsar.nsw.gov.au).

Cheaper alternatives with similar incomes

Bywong
Income: $1,328/wk Rent: $450/wk $560/wk less rent
Abbotsford (NSW)
Income: $1,179/wk Rent: $550/wk $460/wk less rent
Cremorne Point
Income: $1,661/wk Rent: $650/wk $360/wk less rent
Breakfast Point
Income: $1,249/wk Rent: $680/wk $330/wk less rent
Wamboin
Income: $1,362/wk Rent: $520/wk $490/wk less rent
Balmain East
Income: $1,550/wk Rent: $617/wk $393/wk less rent
Cheltenham (NSW)
Income: $1,159/wk Rent: $695/wk $315/wk less rent
Birchgrove
Income: $1,661/wk Rent: $700/wk $310/wk less rent

Suburbs near Castlecrag

The closest suburb to Castlecrag is Middle Cove, 1.1 km away.

Middle Cove
1.1 km away · income $1,369/wk · rent $930/wk
Northbridge (NSW)
1.2 km away · income $1,375/wk · rent $740/wk
Willoughby East
1.3 km away · income $1,155/wk · rent $873/wk
Castle Cove
1.7 km away · income $1,219/wk · rent $1,000/wk
North Willoughby
1.8 km away · income $1,067/wk · rent $590/wk
Willoughby (NSW)
1.8 km away · income $1,264/wk · rent $583/wk

Compare Castlecrag

Frequently Asked Questions About Castlecrag

What is the population of Castlecrag NSW?

The population of Castlecrag NSW is 2,965 according to the ABS Census 2021. The suburb has a population density of 1,969 people per km². Castlecrag is ranked #2,434 out of 14,663 suburbs by population.

What is the median income in Castlecrag?

The median personal income in Castlecrag NSW is $1,446 per week, or $75,192 per year. The median household income is $4,675 per week. Family income is $4,857 per week. Castlecrag is ranked #147 by income out of 14,663 Australian suburbs.

How much is rent in Castlecrag?

Median rent in Castlecrag NSW is $1,010 per week ($4,377 per month). Rent represents 21.6% of household income, which is considered affordable. Castlecrag ranks #17 out of 14,663 suburbs by rent.

What are mortgage repayments in Castlecrag?

The median monthly mortgage repayment in Castlecrag 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 Castlecrag?

The median age in Castlecrag NSW is 47 years. This is older than the national median age of 38 years.

Is Castlecrag a good suburb to live in?

Castlecrag is a suburb in New South Wales with a population of 2,965. The median income is $1,446/wk, which is above the typical NSW suburb ($765/wk). Rent affordability is rated as affordable (21.6% of household income). See the full suburb profile above for detailed statistics.

Explore More

Australian Average Salary Australian House Prices Sydney Cost of Living

Data: Australian Bureau of Statistics, Census of Population and Housing 2021. SA2 area: 10848. All dollar figures in AUD.