Castle Hill, NSW: suburb profile

The population of Castle Hill NSW is 40,874 according to the 2021 Census. The median personal income in Castle Hill is $931 per week ($48,412 per year). Median rent in Castle Hill is $560 per week ($2,427 per month). Castle Hill has a median age of 42 years, older than the national median of 38. Castle Hill has a population density of 2,173 people per km².

The most common overseas birthplace in Castle Hill is China. The most common religion is No religion (29.6% of residents). After English, the most spoken language is Mandarin. The median monthly mortgage repayment in Castle Hill is $3,000.

There were 337 recorded offences in Castle Hill in 2025-26, a rate of 8 offences per 1,000 people. The most common offence category was theft (159 offences).

Population
40,874
Census 2021
Median income
$931/wk
Personal, Census 2021
Median rent
$560/wk
Weekly, Census 2021
Median age
42years
Census 2021

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

Castle Hill vs the typical NSW suburb

The median personal income in Castle Hill is $931 a week, 22% above the typical NSW suburb ($765). That ranks 520th of 2,150 NSW suburbs with 200 or more residents. Median rent is $560 a week, $175 more than the typical NSW suburb. Rent takes 22.0% of the median household income here, against 22.6% in the typical NSW suburb. The median resident is 42, 1 year younger 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.
MeasureCastle HillTypical NSWDifferenceTypical Australia
Personal income$931/wk$765/wk +22%$766/wk
Household income$2,551/wk$1,704/wk +50%$1,637/wk
Rent$560/wk$385/wk +45%$330/wk
Mortgage repayment$3,000/mo$1,965/mo +53%$1,733/mo
Median age4243 −1 yrs42
Rent share of household income22.0%22.6% −0.6 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 Castle Hill, the typical NSW suburb and the typical Australian suburb.

Castle Hill Population

40,874 residents at the 2021 Census.

Castle Hill Median Income & Rent

Median Income
$931/wk
$48,412 per year
Ranked 1,797 of 14,663
Median Rent
$560/wk
$2,427 per month
Ranked 337 of 14,663
Median Age
42years
4 years older than the national median
Mortgage
$3,000/mo
Avg household size: 3 · 0.8 per bedroom

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

Castle Hill Rent Prices & Affordability

22% of median household income goes on median rent

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

Household income $2,551/wk
Median rent $560/wk
Rent to income 22.0%

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

Median rent in Castle Hill against your income

About $11,054 a month
Median rent $560/wk
Left after rent $1,991/wk
Rent share 22.0%

Castle Hill Schools

24
schools nearby
12
government
1126
avg ICSEA score
17,976
total students
Baulkham Hills High School Government
Secondary · 7-12 · 1,223 students
1203
ICSEA
William Clarke College Independent
Combined · K-12 · 1,951 students
1162
ICSEA
Oakhill Drive Public School Government
Primary · K-6 · 756 students
1152
ICSEA
Excelsior Public School Government
Primary · K-6 · 561 students
1150
ICSEA
St Bernadette's Primary School Catholic
Primary · K-6 · 479 students
1145
ICSEA
Hills Montessori School Independent
Primary · K · 16 students
1141
ICSEA
Crestwood Public School Government
Primary · K-6 · 633 students
1139
ICSEA
Baulkham Hills North Public School Government
Primary · K-6 · 876 students
1130
ICSEA
Castle Hill Public School Government
Primary · K-6 · 970 students
1128
ICSEA
Samuel Gilbert Public School Government
Primary · K-6 · 643 students
1128
ICSEA
St Angela's Primary School Catholic
Primary · K-6 · 618 students
1126
ICSEA
Oakhill College Independent
Secondary · 7-12 · 2,242 students
1124
ICSEA
Castle Hill High School Government
Secondary · 7-12 · 1,845 students
1121
ICSEA
Sherwood Ridge Public School Government
Primary · K-6 · 584 students
1114
ICSEA
St Michael's Primary School Catholic
Primary · K-6 · 696 students
1113
ICSEA

Showing 15 of 24 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 Castle Hill, with a map

Castle Hill Map

Castle Hill, New South Wales Map data: OpenStreetMap
Loading map…

Castle Hill, New South Wales: 33.7293°S, 150.9978°E

Castle Hill Circle size: offences per 1,000 residents Schools (24)

People in Castle Hill

Demographics

Gender Split

Male 48.3% (19,747) Female 51.7% (21,128)

Population Density

2,173
people per km²
40,874 people · 18.8 km²

Households

3
Avg household size
0.8
Persons per bedroom
$2,858
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

China
9.2%
India
5.4%
England
3.0%
South Korea
2.5%
Hong Kong
1.9%
Iran
1.7%
Sri Lanka
1.6%

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

Most common languages at home other than English

Mandarin
11.4%
Cantonese
4.8%
Korean
3.1%
Hindi
2.3%
Persian (excluding Dari)
2.0%
Arabic
1.8%
Tamil
1.3%

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

Ancestry

English
21.4%
Chinese
20.2%
Australian
19.4%
Indian
7.4%
Irish
7.1%
Scottish
5.8%
Italian
4.0%
Korean
3.5%
German
2.4%
Filipino
2.1%
Lebanese
2.0%

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
29.6%
Catholic
23.7%
Anglican
11.3%
Hinduism
6.2%
Not stated
4.7%
Islam
3.9%
Buddhism
3.7%
Christian (other)
2.7%

Source: ABS Census 2021, G14 Religion by SAL

Indigenous Population

0.4%
Aboriginal & Torres Strait Islander

Source: ABS Census 2021, G07 Indigenous Status by SAL

Marital Status

Married
60.1% 19,964
Separated
2.0% 665
Divorced
5.8% 1,922
Widowed
5.7% 1,904
Never married
26.3% 8,749

Source: ABS Census 2021, G05 Marital Status by SAL

Family Structure

Couple: children under 15
45.4%
Couple: no children under 15
24.6%
Couple: no children
21.2%
One parent: no children under 15
5.0%
One parent: children under 15
3.8%

Source: ABS Census 2021, G29 Family Composition by SAL

Household Size

1 person
15.9%
2 persons
28.4%
3 persons
18.7%
4 persons
23.2%
5 persons
9.2%
6+ persons
4.7%

Source: ABS Census 2021, G35 Household Size by SAL

Homes in Castle Hill

Housing Tenure

Of the 13,224 occupied private dwellings in Castle Hill at the 2021 Census, 22.9% were rented, 35.0% owned outright and 37.4% owned with a mortgage.

Other tenure type
3.7% 493 dwellings
Owned outright
35.0% 4,632 dwellings
Owned with mortgage
37.4% 4,940 dwellings
Rented
22.9% 3,032 dwellings
Tenure type not stated
1.0% 127 dwellings

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

Dwelling Types

Separate house
87.2%
Semi-detached (2+ storey)
10.8%
Semi-detached (1 storey)
2.0%

Source: ABS Census 2021, G36 Dwelling Structure by SAL

Number of Bedrooms

1 bedroom
3.4%
2 bedrooms
13.2%
3 bedrooms
22.9%
4 bedrooms
40.9%
5 bedrooms
16.5%
6+ bedrooms
3.1%

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

Monthly Mortgage Repayments

$0-$299/mo
9.3%
$300-$449/mo
2.3%
$450-$599/mo
1.4%
$600-$799/mo
2.3%
$800-$999/mo
3.3%
$1,000-$1,399/mo
8.1%
$1,400-$1,799/mo
10.1%
$1,800-$2,399/mo
19.3%
$2,400-$2,999/mo
14.7%
$3,000-$3,999/mo
29.2%

Source: ABS Census 2021, G38 Mortgage Repayment by SAL

Car Ownership

0 vehicles
4.8%
1 vehicle
32.6%
2 vehicles
40.9%
3 vehicles
13.8%
4+ vehicles
7.8%

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

Work, income and education in Castle Hill

Employment

Employed full-time
38.9% 11,729 people
Employed part-time
18.9% 5,689 people
Unemployed
3.0% 905 people
Not in labour force
39.2% 11,808 people

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

Occupation

Professionals
41.0%
Managers
21.4%
Clerical & Administrative
13.8%
Technicians & Trade Workers
7.9%
Community & Personal Service
6.4%
Sales Workers
5.6%
Labourers
2.3%
Machinery Operators & Drivers
1.6%

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

Weekly Household Income

Nil/Negative/wk
1.9%
$1-$149/wk
0.7%
$150-$299/wk
0.9%
$300-$399/wk
1.3%
$400-$499/wk
3.4%
$500-$649/wk
3.4%
$650-$799/wk
3.9%
$800-$999/wk
4.1%
$1,000-$1,249/wk
4.9%
$1,250-$1,499/wk
5.3%
$1,500-$1,749/wk
4.5%
$1,750-$1,999/wk
4.5%
$2,000-$2,499/wk
10.4%
$2,500-$2,999/wk
7.7%
$3,000-$3,499/wk
7.8%
$3,500-$3,999/wk
6.1%
$4,000+/wk
29.2%

Source: ABS Census 2021, G33 Household Income by SAL

Personal Weekly Income Distribution

$0 or less/wk
14.8%
$1-$149/wk
4.8%
$150-$299/wk
5.5%
$300-$399/wk
2.6%
$400-$499/wk
2.2%
$500-$649/wk
2.7%
$650-$799/wk
6.5%
$800-$999/wk
7.2%
$1,000-$1,249/wk
8.9%
$1,250-$1,499/wk
7.4%
$1,500-$1,749/wk
7.0%
$1,750-$1,999/wk
5.9%
$2,000-$2,999/wk
12.9%
$3,000-$3,499/wk
4.2%
$3,500+/wk
7.5%

Source: ABS Census 2021, G17 Personal Income by SAL

How People Get to Work

Car (driver)
62.9%
Did not go to work
24.1%
Car (passenger)
4.1%
Train
2.4%
Walked only
2.3%
Bus
2.2%
Other
0.8%
Truck
0.6%
Motorbike/Scooter
0.3%
Bicycle
0.2%
Taxi/Rideshare
0.1%

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

Education Level

Year 12 or equivalent
81.5%
Year 10 or equivalent
12.9%
Year 11 or equivalent
3.2%
Year 9 or equivalent
2.4%

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
42.8%
Postgraduate Degree
21.2%
Advanced Diploma/Diploma
16.2%
Certificate III/IV
14.0%
Graduate Diploma/Certificate
4.5%
Certificate I/II
1.2%

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

Field of Study

Management & Commerce
33.2%
Engineering
13.5%
Society & Culture
10.6%
Health
10.2%
Information Technology
8.9%
Education
7.7%
Natural & Physical Sciences
4.4%
Architecture & Building
4.2%
Creative Arts
3.8%
Food, Hospitality & Personal Services
2.5%
Agriculture & Environment
0.9%

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

School & University Attendance

Primary: Government
31.1%
Secondary: Government
23.2%
Vocational Education
9.1%
Pre-school
8.8%
Secondary: Catholic
8.6%
Secondary: Other Non-Govt
7.9%
Primary: Catholic
6.3%
Primary: Other Non-Govt
5.1%

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
91.6%
Has need for assistance
4.9%
Need for assistance not stated
3.4%

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

Long-term Health Conditions

Mental health
1,988
Asthma
1,178
Diabetes
1,049
Heart disease
985
Arthritis
931
Cancer
551
Lung condition
416
Kidney disease
315
Stroke
307
Dementia
128

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

Unpaid Carers

Provided unpaid assistance
11.9% 3,810
Did not provide
88.1% 28,080

Source: ABS Census 2021, G25 Unpaid Assistance by SAL

Volunteering

Volunteer
15.0% 4,797
Not a volunteer
85.0% 27,152

Source: ABS Census 2021, G23 Voluntary Work by SAL

Military Service

Current ADF: Regular
0.1% 44
Current ADF: Reserves
0.1% 31
Previously served
1.4% 451
Never served
98.4% 31,470

Source: ABS Census 2021, G22 ADF Service by SAL

Children Ever Born

No children
28.6%
1 child
15.1%
2 children
35.6%
3 children
15.2%
4 children
4.4%
5+ children
1.0%

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

When Migrants Arrived

Before 1951
160
1951: 1960
407
1961: 1970
813
1971: 1980
1,187
1981: 1990
2,547
1991: 2000
3,079
2001: 2010
4,738
2011: 2015
2,211
2016
599
2017
520
2018
522
2019
625
2020
254
2021
120

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

Population Mobility

12.2%
moved in the last year
36.8%
moved in the last 5 years
4.5%
unemployment rate (Census)
61.0%
labour force participation

Source: ABS Census 2021, G43 Summary by SAL

Where Residents Moved From

Same address
34,565
Moved from NSW
3,775
Moved: same area (SA2)
427
Moved from overseas
398
Moved from VIC
48
Moved from QLD
43
Moved from ACT
16
Moved from SA
13
Moved from WA
12
Moved from TAS
8
Moved from NT
3

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

Unpaid Domestic Work

Less than 5 hours
21.2%
5: 14 hours
29.4%
15: 29 hours
15.0%
30+ hours
10.3%
Did not do domestic work
24.2%

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

Family Blending

Intact family: no other children
92.2%
Step family: no other children
5.6%
Blended family: no other children
1.4%
Intact family: other children present
0.7%
Other couple: children only
0.1%
Step family: other children present
0.0%

Source: ABS Census 2021, G31 Family Blending by SAL

Castle Hill Crime Statistics

337 reported offences in 2025-26, by category.

Theft
159
Other Against Property
80
Assault
28
Property Damage
20
Other Against Person
19
Traffic
16
Sexual Offences
6
Robbery
3
Drug Offences
3
Weapons
3

Total offences by year

2020
2021
2022
2023
2024
2025

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

Cheaper alternatives with similar incomes

South Coogee
Income: $958/wk Rent: $207/wk $353/wk less rent
West Wyalong
Income: $778/wk Rent: $230/wk $330/wk less rent
Coolamon
Income: $746/wk Rent: $270/wk $290/wk less rent
Tomerong
Income: $772/wk Rent: $300/wk $260/wk less rent
Yass
Income: $867/wk Rent: $340/wk $220/wk less rent
Hillvue
Income: $839/wk Rent: $350/wk $210/wk less rent
Table Top
Income: $1,052/wk Rent: $380/wk $180/wk less rent
Chifley (NSW)
Income: $841/wk Rent: $400/wk $160/wk less rent

Suburbs near Castle Hill

The closest suburb to Castle Hill is Glenhaven, 3.0 km away.

Glenhaven
3.0 km away · income $950/wk · rent $650/wk
Baulkham Hills
3.0 km away · income $973/wk · rent $520/wk
Norwest
3.2 km away · income $1,053/wk · rent $579/wk
West Pennant Hills
3.9 km away · income $1,032/wk · rent $641/wk
Bella Vista
4.3 km away · income $1,081/wk · rent $740/wk
Kellyville
4.3 km away · income $1,049/wk · rent $630/wk

Compare Castle Hill (NSW)

Frequently Asked Questions About Castle Hill

What is the population of Castle Hill NSW?

The population of Castle Hill NSW is 40,874 according to the ABS Census 2021. The suburb has a population density of 2,173 people per km². Castle Hill is ranked #14 out of 14,663 suburbs by population.

What is the median income in Castle Hill?

The median personal income in Castle Hill NSW is $931 per week, or $48,412 per year. The median household income is $2,551 per week. Family income is $2,858 per week. Castle Hill is ranked #1,797 by income out of 14,663 Australian suburbs.

How much is rent in Castle Hill?

Median rent in Castle Hill NSW is $560 per week ($2,427 per month). Rent represents 22.0% of household income, which is considered affordable. Castle Hill ranks #337 out of 14,663 suburbs by rent.

What are mortgage repayments in Castle Hill?

The median monthly mortgage repayment in Castle Hill NSW is $3,000. This data comes from the ABS Census 2021 and reflects mortgage repayments for owner-occupied dwellings.

What is the median age in Castle Hill?

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

Is Castle Hill a good suburb to live in?

Castle Hill is a suburb in New South Wales with a population of 40,874. The median income is $931/wk, which is above the typical NSW suburb ($765/wk). Rent affordability is rated as affordable (22.0% 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: 10846. All dollar figures in AUD.