Mount Wilson flood map & planning overlays
A planning-constraint profile of Mount Wilson (Blue Mountains, NSW) - 41.69 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
41.69 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Wilson'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.
Mount Wilson at a glance
How Mount Wilson is zoned
Buying in Mount Wilson? 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 41.69 km², Mount Wilson is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 50 heritage-listed sites on record, and the dominant land-use zone is National Parks and Nature Reserves. The median lot measures about 21,091 m² across 186 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 Mount Wilson
Census 2021 figures published by the ABS for the Mount Wilson 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 1055, and decile 8 within New South Wales. The national average is 1000.
Age profile
Share of Mount Wilson's 81 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Blue Mountains - North, the wider ABS statistical area containing Mount Wilson. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Wilson itself.
27 in 2001 to 9 in 2025, down 67%.
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.
Mount Wilson 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 Mount Wilson 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 →Mount Wilson planning - frequently asked
Where can I see a flood map of Mount Wilson?
The schematic on this page is a Mount Wilson 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 Mount Wilson address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Mount Wilson flood-prone?
Flood mapping covers Mount Wilson and none of the suburb falls within a mapped flood overlay. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Mount Wilson bushfire-prone?
Yes - around 100% of Mount Wilson is mapped as bushfire-prone, compared with a Blue Mountains average of 96%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Mount Wilson?
The dominant planning zone in Mount Wilson is National Parks and Nature Reserves, though the suburb also includes Rural Landscape and Environmental Conservation. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Mount Wilson have heritage-listed places?
Mount Wilson has 50 heritage-listed places 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 Mount Wilson?
Across 186 surveyed parcels in Mount Wilson, the median lot size is about 21,091 m².
What is the population of Mount Wilson?
At the 2021 Census Mount Wilson had 81 usual residents, with a median age of 62 and an average household size of 1.7 people. The wider Blue Mountains - North statistical area, which contains Mount Wilson, went from 27 people in 2001 to 9 in 2025, down 67%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Mount Wilson alone.
Is Mount Wilson an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Wilson scores 1055 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.
What is the median household income in Mount Wilson?
Median household income in Mount Wilson was $2,250 a week at the 2021 Census, against $2,083 for the typical suburb in Blue Mountains. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Mount Wilson property?
A Mount Wilson 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 |
|---|---|---|---|
| Mount Tomah | 4.5 km | 0% | 100% |
| Berambing Hawkesbury |
5.7 km | 0% | 100% |
| Mount Irvine | 6.5 km | 0% | 100% |
| Birrabang | 8.3 km | Not mapped | 100% |
| Bell Lithgow City |
8.5 km | Not mapped | 100% |
| The Devils Wilderness Hawkesbury |
11.1 km | 0% | 100% |
| Carmarthen | 12.3 km | 0% | 100% |
| Burramoko | 12.9 km | Not mapped | 100% |
| Dargan Lithgow City |
13.1 km | Not mapped | 100% |
| Govetts | 13.6 km | Not mapped | 100% |