Castlecrag, NSW 2068 — Suburb Profile
Last reviewed: · By Knowburb Research Team
In short
Castlecrag is a suburb of New South Wales, postcode 2068, home to 2,965 residents with a settled, mature community. Located in the Willoughby local government area and roughly 8 km from the Sydney CBD.
Snapshot
Demographics
- Population
- 2,965
- Median age
- 47 years
- Median household income
- $4,675 /week
- Median personal income
- $1,446 /week
- Median family income
- $4,857 /week
- Average household size
- 3.0
- Persons per bedroom
- 0.8
- Local government area
- Willoughby
- Statistical region (SA4)
- Sydney - North Sydney and Hornsby
- Remoteness classification
- Major Cities of Australia
- Federal electorate
- Bennelong
Property & cost of living
- Median rent
- $1,010 /week
- Median monthly mortgage
- $4,333
- Rent share of household income
- 22%
Schools
- Willoughby Public School
- Willoughby Girls High School
- Artarmon Public School
- Castle Cove Public School
- Northbridge Public School
Transport
- Within 800 m walk: 54 bus stops
- Within 1.6 km: 151 bus stops
- High St Opp Robert St
- Willoughby Public School, Keary St, Stand 1
- Willoughby Public School, Keary St, Stand 2
- Willoughby Girls High School, Keary St, Stand 5
- Willoughby Girls High School, Keary St, Stand 6
Lifestyle & amenities
- 20 cafés
- 44 restaurants
- 7 pubs and bars
- 60 parks and reserves
- 7 gyms and fitness centres
- 1 library
- 5 supermarkets
- 33 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), 6.6 km away
NBN & connectivity
Fibre to the Premises serves 46.6% of the 1,167 resolvable premises in Castlecrag. Most premises here have a fibre cable running directly into the property — the fastest and most reliable NBN option, with plans available up to NBN 1000.
- Fibre to the Premises: 46.6%
- Fibre to the Curb: 32.6%
- Fibre to the Building: 2.2%
- Hybrid Fibre-Coaxial: 18.2%
- Fibre to the Node: 0.3%
Safety
- Recorded offences: 241 across postcode 2068 in the year to Dec 2025 (down 23% on the prior year).
- Most common categories: 123 theft, 34 violent offences, 20 break-ins.
Frequently asked questions
What is the population of Castlecrag?
Castlecrag (NSW 2068) had 2,965 residents at the most recent ABS Census. The median age is 47. It sits within the Willoughby local government area.
What is the median rent in Castlecrag?
The median advertised rent in Castlecrag is $1,010/week, based on SQM Research listings data. Rents vary by property type, bedrooms and condition.
Are there schools in Castlecrag?
Yes — 5 schools are listed within or near Castlecrag covering government sectors. Nearest include: Willoughby Public School (0.3 km), Willoughby Girls High School (0.4 km), Artarmon Public School (1.9 km). School data sourced from ACARA and state education departments.
What NBN technology is available in Castlecrag?
Castlecrag is predominantly served by Fibre to the Premises (46.6% of premises). Coverage data is sourced from the NBN upgrade map aggregated from NBN Co address checks.
How safe is Castlecrag?
Across postcode 2068, 241 offences were recorded in the 12 months to Dec 2025. The most common offence categories were theft (123), violent (34), break-ins (20). 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 Castlecrag?
In Castlecrag, 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 (6.6 km away). Long-term averages from the Bureau of Meteorology.
What public transport options are in Castlecrag?
151 public transport stops are mapped within 1.6 km of the Castlecrag centroid. Within 800 m, you'll find 54 bus stops. Stop data is sourced from state government GTFS feeds.
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: