Castle Hill at a glance
Walk score
8
Very car dependent
Population
40.9k
Median age 42
The brief
What to know about Castle Hill.
The postcode for Castle Hill is 2154 (NSW), part of Greater Sydney.
Castle Hill (2154) sits in the Hornsby region of NSW.
Castle Hill has roughly 40,874 residents, with a typical family-age mix. Households are mostly owner-occupied. Daily life is car-dependent: most residents drive to work, school and the shops.
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Median, growth, schools, walkability, all in one view.
Day to day
What it’s like to live here.
Castle Hill scores 8/100 on walkability, which makes it car-dependent with limited public transport. Plan for two cars in a typical household, especially if work isn't local.
Summer days here average around 26°C (mild), winter mornings around 8°C (mild). Annual rainfall lands at about 1302mm. Data comes from the Bureau of Meteorology's Sydney (Observatory Hill) station, 32.5km away.
Schooling within or near the suburb covers 8 government primary, 4 government secondary, 4 Catholic, 4 independent.
Who lives here
Demographics.
The 2021 Census put Castle Hill's population at 40,874, with a median age of 42. That sits as a typical family-age mix. Households are mostly owner-occupied (72% own, 23% rent), which shapes everything from school catchment stability to how often properties turn over. The household mix skews family-dominated (83% family households, 16% lone person), so amenity decisions tend to follow what families want: parks, schools, supermarkets.
Population
40,874
Median age
42
Family households
83%
Lone person
16%
Demographics data as of May 2026· ABS 2021 Census
Market
The price of a home here.
Median house price
Verified median pending
We don't yet have a verified suburb-level median for this market. We're working on a data partner; in the meantime, treat the state-level figures as a guide only. How we source data.
Sales data as of May 2026· rental-nsw
Rental and ownership
Weekly rent (house)
$820/wk
Weekly rent (unit)
$560/wk
Owner occupied
72%
Renter occupied
23%
At a deeper level
40,874
Median age: 42
Rental data as of December 2025· rental-nsw
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Safety
Crime and safety.
1,399
total offences in 2025
Top offence categories
Crime statistics are reported at LGA level and may cover a broader area than this suburb.
Source: State Police Open Data
Crime data as of January 2025· State Police Open Data
Getting around
Walkability.
8
0
100
Scores calculated from OpenStreetMap data (ODbL)
Walkability data as of May 2026· OpenStreetMap
Place
Location.
Amenities
Transport
Education
Schools in Castle Hill.
Local schools for Castle Hill
View the catchment for each school to find out more.
Government School Catchment
Castle Hill High School
Castle Hill Public School
Excelsior Public School
© ACARA, licensed under CC BY 4.0.
Climate
Weather year-round.
Annual Rainfall
1302 mm
Hottest Month (avg max)
26.2°C
Coldest Month (avg min)
8.4°C
Monthly Rainfall (mm)
Weather data from BOM station Sydney (Observatory Hill) (33 km away)
Climate data as of May 2026· Bureau of Meteorology
Frequently asked
About Castle Hill.
- What is the Castle Hill postcode?
- Castle Hill is in the 2154 postcode, in NSW, in the Hornsby Shire Council region.
- Where is Castle Hill?
- Castle Hill is a suburb of Sydney, in NSW 2154. It is part of the Greater Sydney area, in the Hornsby Shire Council region.
- What is the average rent in Castle Hill?
- The median weekly rent for houses is $820, for units it's $560.
- What schools are in Castle Hill?
- There are 20 schools serving Castle Hill on this page, including Castle Hill High School, Castle Hill Public School, Gilroy Catholic College.
- How walkable is Castle Hill?
- Castle Hill has a Walk Score of 8 out of 100, highly car-dependent. transit score 0, bike score 100.
- What suburbs are near Castle Hill?
- Castle Hill is close to Milguy, Glenhaven, Crestwood, West Pennant Hills, Baulkham Hills.
- What is the population of Castle Hill?
- The population of Castle Hill is approximately 40,874 (2021 Census). The median age is 42.
For Sale
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Sources cited
Median, growth and rental data from state revenue offices and ABS. Census from ABS 2021. Climate from BoM. Hazard from Geoscience Australia. School data from ACARA. Crime from state police open data. Full methodology →
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