Castle Hill, NSW 2154 — Suburb Profile
Last reviewed: · By Knowburb Research Team
In short
Castle Hill is an established Hills District suburb 30km north-west of Sydney CBD, anchored by Castle Towers shopping centre and Castle Hill Metro station. It is home to families and professionals from diverse backgrounds including Chinese and Indian communities. Housing is dominated by detached houses with median prices over $2.5 million.
Snapshot
Demographics
- Population
- 40,874
- Median age
- 42 years
- Median household income
- $2,551 /week
- Median personal income
- $931 /week
- Median family income
- $2,858 /week
- Average household size
- 3.0
- Persons per bedroom
- 0.8
- Local government area
- The Hills Shire
- Statistical region (SA4)
- Sydney - Baulkham Hills and Hawkesbury
- Remoteness classification
- Major Cities of Australia
- Federal electorate
- Mitchell
Property & cost of living
- Median rent
- $970 /week
- Median monthly mortgage
- $3,000
- Median house price
- $2,550,000
- Rent share of household income
- 38%
Schools
- Castle Hill High School
- Oakhill College
- William Clarke College
Transport
- Sydney Metro — Castle Hill Station
- North West Busway
- Old Northern Road
Lifestyle & amenities
Established family suburb in The Hills Shire with a mix of residential, commercial and light industrial areas. Castle Towers shopping centre and annual shows are local landmarks; demographics include high proportions born overseas with Mandarin widely spoken.
- 12 cafés
- 42 restaurants
- 2 pubs and bars
- 48 parks and reserves
- 6 gyms and fitness centres
- 1 library
- 3 supermarkets
- 25 playgrounds
Climate
- Warmest month: Jan (26.0°C avg max)
- Coolest month: Jul (16.4°C avg max)
- Annual rainfall: 1211 mm
- Reference station: Sydney (Observatory Hill), 24.0 km away
NBN & connectivity
Hybrid Fibre-Coaxial serves 62.9% of the 7,505 resolvable premises in Castle Hill. Most premises here use the existing pay-TV coaxial cable, upgraded for NBN. Plans up to NBN 1000 are typically available.
- Fibre to the Premises: 28.5%
- Fibre to the Curb: 0.4%
- Fibre to the Building: 0.3%
- Hybrid Fibre-Coaxial: 62.9%
- Fibre to the Node: 8.0%
Safety
- Recorded offences: 1,106 across postcode 2154 in the year to Dec 2025 (down 11% on the prior year).
- Most common categories: 512 theft, 223 violent offences, 92 property damage.
Frequently asked questions
What is the population of Castle Hill?
Castle Hill (NSW 2154) had 40,874 residents at the most recent ABS Census. The median age is 42. It sits within the The Hills Shire local government area.
What is the median rent in Castle Hill?
The median advertised rent in Castle Hill is $970/week, based on SQM Research listings data. Rents vary by property type, bedrooms and condition.
Are there schools in Castle Hill?
Yes — 3 schools are listed within or near Castle Hill. Nearest include: Castle Hill High School, Oakhill College, William Clarke College. School data sourced from ACARA and state education departments.
What NBN technology is available in Castle Hill?
Castle Hill is predominantly served by Hybrid Fibre Coaxial (62.9% of premises). Coverage data is sourced from the NBN upgrade map aggregated from NBN Co address checks.
How safe is Castle Hill?
Across postcode 2154, 1,106 offences were recorded in the 12 months to Dec 2025. The most common offence categories were theft (512), violent (223), property damage (92). Crime statistics are recorded by area (postcode or LGA), not by individual suburb. Data sourced from each state's crime statistics agency.
What is the climate like in Castle Hill?
In Castle Hill, mean daily temperatures range from 13.8°C to 21.8°C and annual rainfall is 1,211 mm measured at the Sydney (Observatory Hill) weather station (24 km away). Long-term averages from the Bureau of Meteorology.
Sources & methodology
Demographics from ABS Census. Property data from SQM Research. Climate from Bureau of Meteorology. Schools from ACARA. NBN from NBN Co. Amenities from OpenStreetMap. See full methodology.
Additional sources for this profile: