Portarlington flood map & planning overlays
Portarlington's median local is 62, Greater Geelong's oldest.
Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.
A planning-constraint profile of Portarlington
(Greater Geelong, VIC) - 24.81 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.
Constraint readout
24.81 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Portarlington's boundary, with the flood, bushfire and environmental overlays drawn on top. 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 Portarlington
The ANEF contour is a published planning forecast and observed overflight is what a sampled tracking feed recorded - neither describes any individual property.
Observed overflight - sampled 4 Sep to 24 Oct 2026
typical observed square 0 a day
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Portarlington at a glance
How Portarlington is zoned
Selling in Portarlington? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.
Across its 24.81 km², Portarlington is highly constrained by planning overlays. About 10% of the suburb sits within a mapped flood overlay, and 85% is flagged bushfire-prone. There are 23 heritage-listed sites on record, and the dominant land-use zone is Farming Zone (FZ). The median lot measures about 626 m² across 4,194 parcels.
Who lives in Portarlington
Census 2021 figures published by the ABS for the Portarlington 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 969, and decile 3 within Victoria. The national average is 1000.
Age profile
Share of Portarlington's 4,436 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Portarlington, the wider ABS statistical area containing Portarlington. There is no annual population series published at suburb level, so this describes the surrounding area rather than Portarlington itself.
5,391 in 2001 to 10,874 in 2025, up 102%.
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.
Portarlington 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) | Not held | 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 Portarlington 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 76% of Portarlington. 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 Portarlington lot.
Portarlington planning - frequently asked
Is Portarlington flood-prone?
About 10% of Portarlington falls within a mapped flood overlay, against the council-wide suburb average of 18%.
Is Portarlington bushfire-prone?
Around 85% of Portarlington is mapped as bushfire-prone, compared with a Greater Geelong average of 50%.
Is Portarlington under a flight path?
Aircraft were observed below 3,000 ft over about 76% of Portarlington, and over about 85% 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 2,000 ft. At the busiest point in the suburb about 1 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 Portarlington?
The dominant planning zone in Portarlington is Farming Zone (FZ), though the suburb also includes General Residential Zone (GRZ2) and Public Use Zone (PUZ1).
Does Portarlington have heritage-listed places?
Portarlington has 23 heritage-listed places on record.
What is the typical lot size in Portarlington?
Across 4,194 surveyed parcels in Portarlington, the median lot size is about 626 m². There are also 1,634 registered easements mapped in the suburb.
Does Portarlington have a train station?
There is no train station inside Portarlington itself. The suburb is served by 36 bus stops.
What is the population of Portarlington?
At the 2021 Census Portarlington had 4,436 usual residents, with a median age of 62 and an average household size of 2.0 people. The wider Portarlington statistical area, which contains Portarlington, went from 5,391 people in 2001 to 10,874 in 2025, up 102%.
Is Portarlington an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Portarlington scores 969 and sits in decile 4 of 10 nationally and decile 3 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Portarlington?
Median household income in Portarlington was $1,064 a week at the 2021 Census, against $1,670 for the typical suburb in Greater Geelong. Median rent was $331 a week and the median mortgage repayment $1,657 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Indented Head | 2.7 km | 11% | 66% |
| Bellarine | 4.3 km | 1% | 99% |
| St Leonards | 4.6 km | 19% | 86% |
| Drysdale | 7.5 km | 2% | 94% |
| Clifton Springs | 8.5 km | <1% | 34% |
| Swan Bay | 10.4 km | 10% | 30% |
| Mannerim | 10.4 km | 4% | 100% |
| Swan Island Queenscliffe |
12.2 km | 49% | 0% |
| Curlewis | 13.6 km | <1% | 93% |
| Queenscliff Queenscliffe |
14.0 km | 45% | 51% |