Areas / South Gippsland / Koonwarra

Koonwarra flood map & planning overlays

Koonwarra keeps 15,913 m² farm lots, locals 53 at the median.

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

A planning-constraint profile of Koonwarra (South Gippsland, VIC) - 38.12 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 Koonwarra'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 Koonwarra

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
35%
of the suburb, at or below 10,000 ft
Below 3,000 ft
19%
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.

Koonwarra at a glance

Parcels 347 Median lot 15,913 m² Mapped easements 98 Bus stops 1

How Koonwarra is zoned

Farming Zone (FZ) 87%
Rural Activity Zone (RAZ) 6%
Public Conservation and Resource Zone (PCRZ) 3%
Public Park and Recreation Zone (PPRZ) 1%
Transport Zone (TRZ2) 1%
Low Density Residential Zone (LDRZ) 1%

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

Across its 38.12 km², Koonwarra is highly constrained by planning overlays. About 5% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 3 heritage-listed sites on record, and the dominant land-use zone is Farming Zone (FZ). The median lot measures about 15,913 m² across 347 parcels.

Who lives in Koonwarra

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

Population
366
usual residents, 2021
Median age
53
years
Median household income
$1,825
per week, South Gippsland suburb typical $1,540
Median rent
$252
per week, South Gippsland suburb typical $255
Median mortgage
$1,517
per month
Household size
2.5
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 7
most disadvantagedleast disadvantaged

Score 1010, and decile 6 within Victoria. The national average is 1000.

Relative disadvantage (IRSD) Decile 8
most disadvantagedleast disadvantaged

Age profile

Share of Koonwarra's 366 residents in each ABS age band.

0-4 2.8%
5-14 9.2%
15-19 6.7%
20-24 5.8%
25-34 4.7%
35-44 8.1%
45-54 16.7%
55-64 23.6%
65-74 13.9%
75-84 6.7%
85+ 1.9%

Population trend, 2001 to 2025

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

9,791 in 2001 to 11,699 in 2025, up 19%.

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.

Koonwarra 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 Koonwarra 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 19% of Koonwarra. 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 Koonwarra lot.

Koonwarra planning - frequently asked

Is Koonwarra flood-prone?

About 5% of Koonwarra falls within a mapped flood overlay, against the council-wide suburb average of 12%.

Is Koonwarra bushfire-prone?

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

Is Koonwarra under a flight path?

Aircraft were observed below 3,000 ft over about 19% of Koonwarra, and over about 35% 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 Koonwarra?

The dominant planning zone in Koonwarra is Farming Zone (FZ), though the suburb also includes Rural Activity Zone (RAZ) and Public Conservation and Resource Zone (PCRZ).

Does Koonwarra have heritage-listed places?

Koonwarra has 3 heritage-listed places on record.

What is the typical lot size in Koonwarra?

Across 347 surveyed parcels in Koonwarra, the median lot size is about 15,913 m². There are also 98 registered easements mapped in the suburb.

Does Koonwarra have a train station?

There is no train station inside Koonwarra itself. The suburb is served by 1 bus stop.

What is the population of Koonwarra?

At the 2021 Census Koonwarra had 366 usual residents, with a median age of 53 and an average household size of 2.5 people. The wider Leongatha statistical area, which contains Koonwarra, went from 9,791 people in 2001 to 11,699 in 2025, up 19%.

Is Koonwarra an advantaged suburb?

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Koonwarra scores 1010 and sits in decile 7 of 10 nationally and decile 6 within Victoria (decile 1 is the most disadvantaged tenth, decile 10 the least).

What is the median household income in Koonwarra?

Median household income in Koonwarra was $1,825 a week at the 2021 Census, against $1,540 for the typical suburb in South Gippsland. Median rent was $252 a week and the median mortgage repayment $1,517 a month.

Compare nearby suburbs

Nearby suburbDistanceFlood mappedBushfire-prone
Tarwin 4.5 km 4% 100%
Meeniyan 5.5 km 14% 100%
Nerrena 8.1 km 4% 100%
Leongatha South 8.7 km 4% 100%
Leongatha 9.7 km 16% 88%
Pound Creek 11.1 km 14% 100%
Stony Creek (Foster) 11.7 km 4% 100%
Koorooman 12.0 km 11% 100%
Korumburra South 12.1 km 21% 100%
Middle Tarwin 13.0 km 24% 100%

See all South Gippsland suburb profiles →