Round Swamp flood map & planning overlays
A planning-constraint profile of Round Swamp
(Lithgow City, NSW) - 42.92 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 3 October 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
42.92 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Round Swamp'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 Round Swamp
Two different things, kept apart on purpose. The ANEF contour is the planning instrument - a forecast published per airport that planning schemes use to control noise-sensitive development. Observed overflight is what a sampled aircraft-tracking feed actually recorded over the suburb - where aircraft flew, how low and how often.
Observed overflight - sampled 4 Sep to 2 Oct 2026
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Round Swamp at a glance
How Round Swamp is zoned
Buying in Round Swamp? 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 42.92 km², Round Swamp is highly constrained by planning overlays. Flood mapping covers the suburb and none of it falls within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 4 heritage-listed sites on record, and the dominant land-use zone is Rural Landscape. The median lot measures about 165,116 m² across 58 parcels.
Who lives in Round Swamp
Census 2021 figures published by the ABS for the Round Swamp 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 914, and decile 2 within New South Wales. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Lithgow Surrounds, the wider ABS statistical area containing Round Swamp. There is no annual population series published at suburb level, so this describes the surrounding area rather than Round Swamp itself.
7,567 in 2001 to 8,544 in 2025, up 13%.
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.
Round Swamp 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 | 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 |
| Aircraft noise contours (ANEF) | Not held | NSW Government spatial services, NSW ePlanning and published council flood studies, 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 3 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 Round Swamp 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.
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 an indicative AS 2870 site class for a Round Swamp lot.
See what's in the $9 report →Round Swamp planning - frequently asked
Is Round Swamp flood-prone?
Flood mapping covers Round Swamp and none of the suburb falls within a mapped flood overlay.
Is Round Swamp bushfire-prone?
Around 100% of Round Swamp is mapped as bushfire-prone, compared with a Lithgow City average of 92%.
Is Round Swamp under a flight path?
Aircraft were observed over about 9% of Round Swamp in the period sampled, but only above 3,000 ft - the lowest measured was 5,000 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 Round Swamp?
The dominant planning zone in Round Swamp is Rural Landscape, though the suburb also includes Primary Production and Forestry.
Does Round Swamp have heritage-listed places?
Round Swamp has 4 heritage-listed places on record.
What is the typical lot size in Round Swamp?
Across 58 surveyed parcels in Round Swamp, the median lot size is about 165,116 m². There are also 5 registered easements mapped in the suburb.
Is Round Swamp an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Round Swamp scores 914 and sits in decile 2 of 10 nationally and decile 2 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Capertee | 8.0 km | 0% | 100% |
| Brogans Creek Mid-Western Regional |
8.3 km | 0% | 100% |
| Running Stream Mid-Western Regional |
11.3 km | 0% | 100% |
| Clandulla Mid-Western Regional |
15.1 km | 0% | 100% |
| Mount Marsden | 15.8 km | 0% | 100% |
| Bogee | 17.0 km | 0% | 100% |
| Palmers Oaky | 17.2 km | 0% | 100% |
| Glen Alice | 17.2 km | Not mapped | 100% |
| Ilford Mid-Western Regional |
17.8 km | 0% | 100% |
| Upper Turon Mid-Western Regional |
17.9 km | 0% | 100% |