Areas / South Gippsland / Tarwin

Tarwin flood map & planning overlays

Tarwin's median local is 34, the youngest of 57 in South Gippsland.

Free map preview, then PDF reports from $9 - about the price of an iced latte on a public holiday.

A planning-constraint profile of Tarwin (South Gippsland, VIC) - 26.56 km², mapped from live council and state overlay data. This suburb is highly constrained.
Profile updated 24 October 2026.

Elevation hillshade with street names, clipped to Tarwin'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 Tarwin

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

Under observed aircraft
30%
of the suburb, at or below 10,000 ft
Below 3,000 ft
13%
of the suburb's area
Lowest measured
1,500 ft
averaging 3,500 ft
How often
not established
aircraft were seen, but not often enough to put a rate on

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.

Tarwin at a glance

Parcels 104 Median lot 4,208 m² Mapped easements 55

How Tarwin is zoned

Farming Zone (FZ) 97%
Public Conservation and Resource Zone (PCRZ) 1%
Transport Zone (TRZ2) 1%
Public Park and Recreation Zone (PPRZ) 1%

Selling in Tarwin? The zoning and planning overlays on this page are the controls a Section 32 vendor statement discloses.

Across its 26.56 km², Tarwin is highly constrained by planning overlays. About 4% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Farming Zone (FZ). The median lot measures about 4,208 m² across 104 parcels.

Who lives in Tarwin

Census 2021 figures published by the ABS for the Tarwin suburb boundary itself, not a wider region.

Population
59
usual residents, 2021
Median age
34
years
Median household income
$1,916
per week, South Gippsland suburb typical $1,540
Median rent
$150
per week, South Gippsland suburb typical $255
Median mortgage
$867
per month
Household size
3.3
people, average

Socio-economic standing

ABS SEIFA 2021 ranks every Australian suburb. Decile 1 is the most disadvantaged tenth of the country, decile 10 the least.

Advantage and disadvantage (IRSAD) Decile 8
most disadvantagedleast disadvantaged

Score 1022, and decile 7 within Victoria. The national average is 1000.

Relative disadvantage (IRSD) Decile 8
most disadvantagedleast disadvantaged

Age profile

Share of Tarwin's 59 residents in each ABS age band.

0-4 10.5%
5-14 15.8%
15-19 14.0%
20-24 0.0%
25-34 7.0%
35-44 17.5%
45-54 10.5%
55-64 12.3%
65-74 5.3%
75-84 7.0%
85+ 0.0%

Population trend, 2001 to 2025

Estimated resident population of Foster, the wider ABS statistical area containing Tarwin. There is no annual population series published at suburb level, so this describes the surrounding area rather than Tarwin itself.

8,272 in 2001 to 9,631 in 2025, up 16%.

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.

Tarwin data sources and coverage

“Not mapped” means we hold no source layer for this suburb - never an all-clear.

DatasetCoveragePublisher
Flood mappingMappedVicmap Planning and Victorian Government spatial services
Bushfire-prone mappingMappedVicmap Planning and Victorian Government spatial services
ZoningMappedVicmap Planning and Victorian Government spatial services
Heritage and environmentMapped where publishedVicmap Planning and Victorian Government spatial services
Aircraft noise contours (ANEF)Not heldVicmap Planning and Victorian Government spatial services, Defence
Observed flight pathsObservedadsb.lol, under the Open Database License
DemographicsAvailableAustralian 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 Tarwin 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 13% of Tarwin. 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 Tarwin lot.

Tarwin planning - frequently asked

Is Tarwin flood-prone?

About 4% of Tarwin falls within a mapped flood overlay, against the council-wide suburb average of 12%.

Is Tarwin bushfire-prone?

Around 100% of Tarwin is mapped as bushfire-prone, compared with a South Gippsland average of 99%.

Is Tarwin under a flight path?

Aircraft were observed below 3,000 ft over about 13% of Tarwin, and over about 30% 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 1,500 ft, with an average of 3,500 ft. 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 Tarwin?

The dominant planning zone in Tarwin is Farming Zone (FZ), though the suburb also includes Public Conservation and Resource Zone (PCRZ) and Transport Zone (TRZ2).

Does Tarwin have heritage-listed places?

Tarwin has 1 heritage-listed place on record.

What is the typical lot size in Tarwin?

Across 104 surveyed parcels in Tarwin, the median lot size is about 4,208 m². There are also 55 registered easements mapped in the suburb.

What is the population of Tarwin?

At the 2021 Census Tarwin had 59 usual residents, with a median age of 34 and an average household size of 3.3 people. The wider Foster statistical area, which contains Tarwin, went from 8,272 people in 2001 to 9,631 in 2025, up 16%.

Is Tarwin an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Tarwin scores 1022 and sits in decile 8 of 10 nationally and decile 7 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).

What is the median household income in Tarwin?

Median household income in Tarwin was $1,916 a week at the 2021 Census, against $1,540 for the typical suburb in South Gippsland. Median rent was $150 a week and the median mortgage repayment $867 a month.

Compare nearby suburbs

Nearby suburbDistanceFlood mappedBushfire-prone
Koonwarra 4.5 km 5% 100%
Meeniyan 5.3 km 14% 100%
Middle Tarwin 8.7 km 24% 100%
Pound Creek 9.1 km 14% 100%
Buffalo 9.6 km 12% 100%
Leongatha South 10.7 km 4% 100%
Stony Creek (Foster) 11.0 km 4% 100%
Nerrena 11.7 km 4% 100%
Leongatha 14.2 km 16% 88%
Korumburra South 15.7 km 21% 100%

See all South Gippsland suburb profiles →