Williamtown flood map & planning overlays
A planning-constraint profile of Williamtown (Port Stephens, NSW) - 45.22 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
45.22 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Williamtown'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.
Williamtown at a glance
How Williamtown is zoned
Buying in Williamtown? 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 45.22 km², Williamtown is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 88% is flagged bushfire-prone. There are 5 heritage-listed sites on record, and the dominant land-use zone is Rural Landscape. The median lot measures about 20,867 m² across 421 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 Williamtown
Census 2021 figures published by the ABS for the Williamtown 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 927, and decile 2 within New South Wales. The national average is 1000.
Age profile
Share of Williamtown's 762 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Williamtown - Medowie - Karuah, the wider ABS statistical area containing Williamtown. There is no annual population series published at suburb level, so this describes the surrounding area rather than Williamtown itself.
10,830 in 2001 to 17,178 in 2025, up 59%.
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.
Williamtown 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 Williamtown 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 →Williamtown planning - frequently asked
Where can I see a flood map of Williamtown?
The schematic on this page is a Williamtown 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 Williamtown address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Williamtown flood-prone?
Flood mapping covers Williamtown 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 Williamtown bushfire-prone?
Yes - around 88% of Williamtown is mapped as bushfire-prone, compared with a Port Stephens average of 82%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Williamtown?
The dominant planning zone in Williamtown is Rural Landscape, though the suburb also includes Infrastructure and National Parks and Nature Reserves. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Williamtown have heritage-listed places?
Williamtown has 5 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 Williamtown?
Across 421 surveyed parcels in Williamtown, the median lot size is about 20,867 m². There are also 6 registered easements mapped in the suburb - an easement can restrict where you can build, so always check the title and overlays for the specific lot.
Does Williamtown have a train station?
There is no train station inside Williamtown itself. The suburb is served by 48 bus stops.
What is the population of Williamtown?
At the 2021 Census Williamtown had 762 usual residents, with a median age of 56 and an average household size of 2.1 people. The wider Williamtown - Medowie - Karuah statistical area, which contains Williamtown, went from 10,830 people in 2001 to 17,178 in 2025, up 59%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Williamtown alone.
Is Williamtown an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Williamtown scores 927 and sits in decile 2 of 10 nationally and decile 2 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 Williamtown?
Median household income in Williamtown was $889 a week at the 2021 Census, against $1,421 for the typical suburb in Port Stephens. Median rent was $320 a week and the median mortgage repayment $1,950 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Williamtown property?
A Williamtown 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 |
|---|---|---|---|
| Fullerton Cove | 3.6 km | 0% | 51% |
| Campvale | 4.3 km | 0% | 99% |
| Fern Bay | 6.3 km | Not mapped | 65% |
| Salt Ash | 8.4 km | 0% | 84% |
| Raymond Terrace | 9.1 km | 0% | 76% |
| Heatherbrae | 9.3 km | 0% | 80% |
| Medowie | 9.4 km | Not mapped | 79% |
| Tomago | 9.7 km | 0% | 77% |
| Kooragang Newcastle |
10.0 km | 0% | 2% |
| Stockton Newcastle |
10.6 km | Not mapped | 26% |