Milsons Passage flood map & planning overlays
A planning-constraint profile of Milsons Passage (Hornsby, NSW) - 2.31 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
2.31 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Milsons Passage's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Milsons Passage at a glance
How Milsons Passage is zoned
Buying in Milsons Passage? The zoning, flood and bushfire lines on the section 10.7 certificate attached to the contract are mapped controls - see our s10.7 certificate guide.
Across its 2.31 km², Milsons Passage is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 44% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Natural Waterways. The median lot measures about 908 m² across 51 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Who lives in Milsons Passage
Census 2021 figures published by the ABS for the Milsons Passage suburb boundary itself, not a wider region.
Socio-economic standing
ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.
Score 1044, and decile 8 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Berowra - Brooklyn - Cowan, the wider ABS statistical area containing Milsons Passage. There is no annual population series published at suburb level, so this describes the surrounding area rather than Milsons Passage itself.
11,707 in 2001 to 11,761 in 2025, up 0%.
Source: Australian Bureau of Statistics. Census of Population and Housing 2021 (General Community Profile) and SEIFA 2021, both published at the Suburbs and Localities level; Regional Population (estimated resident population) at Statistical Area Level 2. Used under CC BY 4.0. Census counts of small populations are randomly adjusted by the ABS to protect confidentiality, so figures for small suburbs are indicative.
Milsons Passage data sources and coverage
Every figure below is an aggregate for the suburb boundary. “Not mapped” means LayeredGeo does not hold a source layer covering this suburb; it is never an all-clear for a particular property.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Bushfire-prone mapping | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Zoning | Mapped | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Heritage and environment | Mapped where published | NSW Government spatial services, NSW ePlanning and published council flood studies |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 5 August 2026. See the methodology and full source list. Source data changes over time and critical decisions should be checked with the responsible authority.
Check a specific Milsons Passage address
See exactly which overlays touch a single property - the interactive map is free. Need it on paper? A full planning PDF is just $9.
See what's in the $9 report →Milsons Passage planning - frequently asked
Where can I see a flood map of Milsons Passage?
The schematic on this page is a Milsons Passage flood map: the mapped flood overlays drawn over the suburb's terrain and street grid. Flood lines vary block to block, so for a specific property use the free interactive map - search any Milsons Passage address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Milsons Passage flood-prone?
Flood mapping covers Milsons Passage and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 2%). Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Milsons Passage bushfire-prone?
Yes - around 44% of Milsons Passage is mapped as bushfire-prone, compared with a Hornsby average of 69%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Milsons Passage?
The dominant planning zone in Milsons Passage is Natural Waterways, though the suburb also includes Private Recreation and National Parks and Nature Reserves. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Milsons Passage have heritage-listed places?
Milsons Passage has 1 heritage-listed place on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.
What is the typical lot size in Milsons Passage?
Across 51 surveyed parcels in Milsons Passage, the median lot size is about 908 m².
Is Milsons Passage an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Milsons Passage scores 1044 and sits in decile 9 of 10 nationally and decile 8 within New South Wales - decile 1 being the most disadvantaged tenth of Australian suburbs and decile 10 the least. The national average score is 1000. SEIFA summarises income, education, occupation and housing across the whole suburb, so it describes the area, not any particular household in it.
Do I need a planning report for a Milsons Passage property?
A Milsons Passage planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Cheero Point Central Coast |
1.2 km | 0% | 94% |
| Bar Point Central Coast |
1.7 km | 0% | 74% |
| Mooney Mooney Central Coast |
3.1 km | 0% | 31% |
| Cogra Bay Central Coast |
4.7 km | 0% | 100% |
| Wondabyne Central Coast |
5.2 km | 0% | 90% |
| Marlow Central Coast |
5.3 km | 0% | 83% |
| Berowra Waters | 5.6 km | 0% | 59% |
| Dangar Island | 6.3 km | 0% | 56% |
| Mooney Mooney Creek Central Coast |
6.3 km | 0% | 93% |
| Cowan | 6.3 km | 0% | 95% |