Suburb · NSW
Baulkham Hills, NSW
Postcode, council area, planning zones and 2021 Census facts for Baulkham Hills, New South Wales, from government sources. What those zones allow on a particular block is in the report.
Government data only, no interpretation · Data as at 6 October 2026 · Sources and licences
Baulkham Hills at a glance
| State | New South Wales |
|---|---|
| Postcode | 2153 |
| Local government area | The Hills Shire |
| ABS suburb code (SAL 2021) | 10233 |
Planning zones in Baulkham Hills
- R2 — Low Density Residential72%
- RE1 — Public Recreation12%
- R3 — Medium Density Residential8%
- 3 other zones6%
The three largest zones are coloured; every zone covering at least 1% of Baulkham Hills is listed below. Boundaries are the NSW government’s published zone layer, clipped to the Australian Bureau of Statistics suburb boundary. A block’s own zone is read from its parcel, not from its suburb.
Road names © OpenStreetMap contributors.
- R2 — Low Density Residential72% of the suburb
- RE1 — Public Recreation12% of the suburb
- R3 — Medium Density Residential8% of the suburb
- SP2 — Infrastructure3% of the suburb
- R4 — High Density Residential2% of the suburb
- C2 — Environmental Conservation1% of the suburb
Baulkham Hills in the 2021 Census
| Population | 37,415 |
|---|---|
| Median age | 39 years |
| Median weekly household income | $2,474 |
| Median weekly rent | $520 |
| Median monthly mortgage repayment | $2,600 |
| Average household size | 3 people |
Source: Australian Bureau of Statistics, Census of Population and Housing, 2021
Other suburbs in The Hills Shire
- Bella VistaNSW 2153
- Box HillNSW 2765
- West Pennant HillsNSW 2125
- Allambie HeightsNSW 2100
- Anna BayNSW 2316
- AsquithNSW 2077
Related guides
Sources
- Suburb and postcode boundaries: Australian Bureau of Statistics, Australian Statistical Geography Standard (ASGS) Edition 3, 2021, CC BY 4.0
- Source: Australian Bureau of Statistics, Census of Population and Housing, 2021 (CC BY 4.0)
- Zone codes and names: pp.planningportal.nsw.gov.au (CC-BY 4.0)
Full list of data sources and licences: struqt.com.au/sources.
See what our architects make of a block in Baulkham Hills
Run an address in Baulkham Hills through Struqt for that block's zone controls, overlays and a feasibility read, written by registered architects and backed by government data.