Thomastown flood map & planning overlays
Thomastown sits under 49 flights a day, joint 2nd, and 7.4% flood mapping.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Thomastown
(Whittlesea, VIC) - 14.97 km², mapped from live council and
state overlay data. This suburb is moderately constrained.
Profile updated 24 October 2026.
Constraint readout
14.97 km² - this suburb is moderately constrained by planning overlays.
Elevation hillshade with street names, clipped to Thomastown's boundary, with the flood, bushfire and environmental overlays drawn on top. Amber hatching is the published aircraft noise (ANEF) contour. Magenta is where aircraft were observed in the sampled period, brightest below 3,000 ft.
Nearby suburbs, nearest first
Aircraft noise and flight paths over Thomastown
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Inside an aircraft noise contour
3% of the suburb's land sits inside a published ANEF or airport-environs contour. Contours vary street by street, so whether a particular lot is inside one needs a property-level check.
Contours held
- Victorian Airport Environs Overlay
Observed overflight - sampled 4 Sep to 24 Oct 2026
typical observed square 1 a day
Night movements: observed, lowest 1,500 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
How this is measured
Traffic is sampled rather than watched continuously, so every figure is a floor: aircraft not captured between samples are not represented. Rates are per 500 m square - the busiest square in the suburb, not a count of flights over the suburb - and a square is only rated where enough traffic was seen to measure it. Altitudes are above mean sea level. Flight paths change with runway use, weather, season and airspace design. This is a record of observed traffic; it is not a noise contour and not a planning control.
Thomastown at a glance
How Thomastown is zoned
Selling in Thomastown? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 14.97 km², Thomastown is moderately constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay, and 12% is flagged bushfire-prone. There are 20 heritage-listed sites on record, and the dominant land-use zone is Industrial 1 Zone (IN1Z). The median lot measures about 539 m² across 12,522 parcels.
Who lives in Thomastown
Census 2021 figures published by the ABS for the Thomastown 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 900, and decile 1 within Victoria. The national average is 1000.
Age profile
Share of Thomastown's 20,234 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Thomastown, the wider ABS statistical area containing Thomastown. There is no annual population series published at suburb level, so this describes the surrounding area rather than Thomastown itself.
22,546 in 2001 to 20,595 in 2025, down 9%.
Source: ABS Census 2021 and SEIFA 2021 (Suburbs and Localities), Regional Population (SA2), CC BY 4.0. Small counts are randomly adjusted by the ABS.
Thomastown data sources and coverage
“Not mapped” means we hold no source layer for this suburb - never an all-clear.
| Dataset | Coverage | Publisher |
|---|---|---|
| Flood mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Bushfire-prone mapping | Mapped | Vicmap Planning and Victorian Government spatial services |
| Zoning | Mapped | Vicmap Planning and Victorian Government spatial services |
| Heritage and environment | Mapped where published | Vicmap Planning and Victorian Government spatial services |
| Aircraft noise contours (ANEF) | Inside a held contour | Vicmap Planning and Victorian Government spatial services, Defence |
| Observed flight paths | Observed | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 24 October 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 Thomastown 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 →Aircraft have been seen below 3,000 ft over about 79% of Thomastown. The report's Aircraft Overflight page narrows that to the address itself: how many aircraft a day, how low, and at what heights.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and the indicative soil reactivity range to expect for a Thomastown lot.
Thomastown planning - frequently asked
Is Thomastown flood-prone?
About 7% of Thomastown falls within a mapped flood overlay, against the council-wide suburb average of 4%.
Is Thomastown bushfire-prone?
Around 12% of Thomastown is mapped as bushfire-prone, compared with a Whittlesea average of 64%.
Is Thomastown affected by aircraft noise?
About 3% of Thomastown sits inside a published aircraft noise contour. ANEF contours are forecasts published per airport and used to control noise-sensitive development; they are not a measurement at any one house, and a property can sit under a flight path and outside every contour.
Is Thomastown under a flight path?
Aircraft were observed below 3,000 ft over about 79% of Thomastown, and over about 99% at any altitude up to 10,000 ft, in the period sampled (4 Sep 2026 to 24 Oct 2026). The lowest measured aircraft was at 500 ft, with an average of 3,000 ft. At the busiest point in the suburb about 48 aircraft a day were recorded passing over one 500 m square. Traffic is sampled rather than watched continuously and flight paths change with runway use, weather and season; the ANEF contour is the planning instrument.
What is the zoning in Thomastown?
The dominant planning zone in Thomastown is Industrial 1 Zone (IN1Z), though the suburb also includes General Residential Zone (GRZ5) and Transport Zone (TRZ2).
Does Thomastown have heritage-listed places?
Thomastown has 20 heritage-listed places on record.
What is the typical lot size in Thomastown?
Across 12,522 surveyed parcels in Thomastown, the median lot size is about 539 m². There are also 5,253 registered easements mapped in the suburb.
Does Thomastown have a train station?
Yes - Thomastown has 1 train station: Thomastown Station. It is also served by 112 bus stops.
What is the population of Thomastown?
At the 2021 Census Thomastown had 20,234 usual residents, with a median age of 39 and an average household size of 2.6 people. The wider Thomastown statistical area, which contains Thomastown, went from 22,546 people in 2001 to 20,595 in 2025, down 9%.
Is Thomastown an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Thomastown scores 900 and sits in decile 2 of 10 nationally and decile 1 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Thomastown?
Median household income in Thomastown was $1,225 a week at the 2021 Census, against $1,735 for the typical suburb in Whittlesea. Median rent was $350 a week and the median mortgage repayment $1,690 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Lalor | 1.6 km | 7% | 3% |
| Reservoir Darebin |
3.5 km | 6% | 0% |
| Fawkner Merri-Bek |
4.2 km | 12% | 0% |
| Campbellfield Hume |
4.4 km | 5% | 12% |
| Epping | 4.6 km | 4% | 37% |
| Kingsbury Darebin |
4.6 km | 11% | 0% |
| Bundoora Darebin |
4.9 km | 5% | 10% |
| Mill Park | 5.3 km | 4% | 16% |
| Hadfield Merri-Bek |
6.0 km | 20% | 0% |
| Coburg North Merri-Bek |
6.1 km | 13% | 0% |