Castle Hill (NSW)
NSWCastle Hill (NSW) is a growing suburb in NSW with 40,874 residents.
- SAL code
- 10846
- SA2
- 115011555
- Population
- 40,874
- LGA
- The Hills
Castle Hill (NSW), NSW had 40,874 residents at the 2021 Census, with the broader statistical area showing a 4.5% growth over the last five years. The predominant age group is 5-14 years, and the median age sits at 42. Households are most often couples with children, and those with a mortgage repay a median of $3,000 a month. Around 72.4% of homes are owner-occupied, with the largest single tenure being owned with a mortgage at 37.4%. Most dwellings are separate houses, making up 73.8% of the suburb's housing stock. The suburb has 58 parks and reserves mapped within its boundary. Source: ABS Census 2021 and Estimated Resident Population, with amenity counts from state Open Data and OpenStreetMap.
Suburb analysis
Castle Hill (NSW), NSW at a glance
Castle Hill is an established Hills District suburb ~34 km north-west of Sydney CBD and ~9.5 km north of Parramatta, mostly within The Hills Shire. The character mixes detached family homes on standard lots with growing medium- and high-density redevelopment around the Metro station and Showground precinct. The data tiles below cover the demographic baseline; this card adds the live market, lifestyle and council pipeline.
For homebuyers
Castle Hill suits households who want a settled Hills lifestyle with the Metro on the doorstep. The dominant feel is detached 4-bedroom houses on standard suburban lots, with apartments and townhouses concentrated around the station and the Showground precinct. Castle Towers is the retail anchor — ~112,000 m² of GLA across three levels, anchored by Myer, David Jones, Coles and Event Cinemas, with a direct pedestrian link to Castle Hill Metro station (Castle Towers / Wikipedia 2026). Trains run to Barangaroo in ~33 minutes (Sydney Metro 2024). Schools include Castle Hill Public, Castle Hill High and Oakhill College (Catholic, Years 7-12 boys + 11-12 co-ed) on Old Northern Road; Oakhill Drive Public has scored in the state's top 20 for NAPLAN (Good Schools Guide 2026). Fred Caterson Reserve provides 58 hectares of soccer, cricket, baseball and tennis space (The Hills Shire Council 2026). In short: a mature, well-serviced family suburb with strong schooling, a major retail hub, and direct Metro access to the CBD.
For investors
Castle Hill is a capital-growth-oriented market with thin yield. Median house price $2.51M against ~$920/wk rent gives a gross yield of ~2.21%; units are $1.006M at $780/wk for ~3.96% (Your Investment Property March 2026). 12-month house growth ~1.62-4.0% depending on source; units +6.46%. Days-on-market 37 (houses), 32 (units). Sales volume is deep at 464 house and 369 unit sales in the past 12 months. Vacancy ~1.31% (htag March 2026).
Strengths
- Direct Metro to Barangaroo in ~33 minutes plus the Castle Towers retail anchor (~18.7M annual visitors) underwrite long-run demand.
- Deep transaction market — ~833 combined house + unit sales in 12 months — easy to enter and exit at scale.
- Strong school catchments (Oakhill College, Oakhill Drive Public top-20 NAPLAN) attract stable, longer-tenancy family renters.
- Unit segment showed +6.46% growth over 12 months at ~3.96% gross yield — a more balanced risk/return profile than the houses.
Trade-offs
- House yield is thin at ~2.21% — this is a growth/equity play, not cashflow.
- Median house price $2.51M (Your Investment Property March 2026) caps the buyer pool and lifts holding costs.
- Castle Hill North Precinct is rezoned for ~3,300 additional dwellings by 2036 (The Hills Shire Council / NSW Planning Portal) — meaningful unit-stock pipeline that may compress unit yields.
- 37 days on market (houses) is materially slower than tight inner-Sydney comparables — pricing discipline matters.
What's coming
The Castle Hill Showground Revitalisation Master Plan is staged over ~30 years and anchors a new town-centre precinct planned for ~20,000 residents around the Metro station; the NSW Government has committed over $16M via the Western Sydney Infrastructure Grants Program for a new arena and pedestrian bridge (NSW Government 2026). The Castle Hill North Precinct Plan permits ~3,300 additional dwellings by 2036. Council is also progressing a Fred Caterson Reserve Master Plan to absorb growth-driven demand on sports fields.
Bottom line
For homebuyers: a mature Hills suburb with the Metro, Castle Towers and strong schools on the doorstep. For investors: a capital-growth and depth play rather than a yield play, with a sizeable unit pipeline to factor into the runway.
Population
?40,874
Suburb · Census 2021
5-Year Growth
+4.5%
3yr: +5.7% · 10yr: +6.0%
SA2 · 5yr
Household Income
$2,551/wk
Suburb · Census 2021 median
Median Age
42
Suburb · Census 2021
Socio-Economic Index
?10/10
SA2 · least disadvantaged
Unemployment
?4.3%
SA2 · Q4 2025
Schools
5
4 primary, 1 secondary
Hospitals
No data for this suburb
Childcare services
?36
26 long day, 7 OSHC
Parks & green space
?58
Parks, reserves
Transport stops
?150
GTFS stops
Dwelling approvals
?138
The Hills · Feb 2026
Median Weekly Rent
Based on NSW rental bond lodgements, aggregated at postcode level. All SALs sharing this postcode show the same median.
Median House Sale Price
Source: state Valuer-General (suburb-level quarterly medians).
→ Calculate stamp duty on this suburb's median price→ Estimate mortgage repayments→ Calculate rental yield (price + median rent)
Population over time — Castle Hill - North (SA2)
ABS publishes annual estimates only at SA2; Castle Hill (NSW) suburb alone is ~40,874 (Census 2021).
Source: ABS ERP (latest release · 2025) · Census 2021. Numbers refreshed quarterly.
Growth at a Glance
Population grew from 11,141 to 12,973 over 24 years, averaging 0.6% per year.
Schools
5 in suburbSector
5 public
Type
4 primary · 1 secondary
Total enrolment
4,772
Avg per school
954
Government school catchment
Intake zonePrimary
Samuel Gilbert PS29.5%
- Castle Hill PS 28.6%
- Oakhill Drive PS 11.9%
- Sherwood Ridge PS 9.4%
- Baulkham Hls NPS 8.4%
- Excelsior PS 7.8%
- Crestwood PS 3.7%
- Dural PS 0.6%
- Murray Farm PS 0.2%
- Kellyville PS 0.0%
- Glenhaven PS 0.0%
- John Purchase PS 0.0%
Secondary
Castle Hill HS50.2%
- Crestwood HS 19.4%
- Cherrybrook THS 11.9%
- Kellyville HS 9.4%
- Muirfield HS 8.4%
- Galston HS 0.6%
- Pennant Hls HS 0.1%
Source: NSW Department of Education — School Intake Zones. Boundaries can be amended without notice; confirm with the school before relying on enrolment.
Profile
Census snapshot
Housing
Public housing 0.4%Predominantly detached houses (73.8%), owner-occupied (72.4%), built for families (41% are 4 bed).
Dwelling mix
Tenure
NSW 33%
Number of bedrooms
Bushfire risk
Source: NSW RFS BFPL via SEED
As of May 2026
Overlap is the percentage of the suburb's land area inside the mapped bushfire polygons. Always verify the exact property address with the relevant authority before making decisions.
Flood risk
This suburb falls outside every flood polygon mapped by the relevant authority. Always confirm at the property address — local conditions and unmapped overlays can still apply.
Overlap is the percentage of the suburb's land area inside the mapped flood polygons. Always verify the exact property address with the relevant authority before making decisions. Source when available: NSW Rural Fire Service (BFPL) and NSW DPHI EPI Flood.
Planning zones
15 zones in suburb| Code | Zone | % covered | Area |
|---|---|---|---|
| R2 | ZoneResidential | 51.7% | 9.72 km² |
| RE1 | ZoneRecreation | 11.3% | 2.13 km² |
| R3 | ZoneResidential | 9.5% | 1.79 km² |
| C4 | ZoneEnvironmental | 8.5% | 1.59 km² |
| R4 | ZoneResidential | 4.3% | 0.81 km² |
| E4 | ZoneEnvironmental | 4.1% | 0.77 km² |
| E3 | ZoneEnvironmental | 3.3% | 0.63 km² |
| SP2 | ZoneSpecial use | 2.4% | 0.45 km² |
| MU1 | ZoneBusiness | 1.7% | 0.31 km² |
| C2 | ZoneEnvironmental | 1.2% | 0.22 km² |
| R1 | ZoneResidential | 0.6% | 0.12 km² |
| RU2 | ZoneRural | 0.6% | 0.11 km² |
| E1 | ZoneEnvironmental | 0.3% | 0.06 km² |
| RE2 | ZoneRecreation | 0.3% | 0.06 km² |
| C3 | ZoneEnvironmental | 0.2% | 0.04 km² |
Source: NSW DPHI EPI Land Zoning (ZONE_NSW/2026-04-29/1eccf1a530fa1be5) · As of Apr 2026. Zone boundaries are amended periodically; verify the exact property with the relevant council before relying on permitted use.