Mount Marsden flood map & planning overlays
A planning-constraint profile of Mount Marsden
(Lithgow City, NSW) - 88.0 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
88.0 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Mount Marsden'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 Mount Marsden
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.
Mount Marsden at a glance
How Mount Marsden is zoned
Buying in Mount Marsden? 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 88.0 km², Mount Marsden 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. The dominant land-use zone is Rural Landscape. The median lot measures about 395,888 m² across 106 parcels.
Who lives in Mount Marsden
Census 2021 figures published by the ABS for the Mount Marsden 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 953, and decile 3 within New South Wales. The national average is 1000.
Age profile
Share of Mount Marsden's 54 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Lithgow Surrounds, the wider ABS statistical area containing Mount Marsden. There is no annual population series published at suburb level, so this describes the surrounding area rather than Mount Marsden 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.
Mount Marsden 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 Mount Marsden 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 Mount Marsden lot.
See what's in the $9 report →Mount Marsden planning - frequently asked
Is Mount Marsden flood-prone?
Flood mapping covers Mount Marsden and none of the suburb falls within a mapped flood overlay.
Is Mount Marsden bushfire-prone?
Around 100% of Mount Marsden is mapped as bushfire-prone, compared with a Lithgow City average of 92%.
Is Mount Marsden under a flight path?
Aircraft were observed over about 6% of Mount Marsden in the period sampled, but only above 3,000 ft - the lowest measured was 6,000 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 Mount Marsden?
The dominant planning zone in Mount Marsden is Rural Landscape, though the suburb also includes Primary Production and Forestry.
Does Mount Marsden have heritage-listed places?
No heritage-listed places are on record within Mount Marsden.
What is the typical lot size in Mount Marsden?
Across 106 surveyed parcels in Mount Marsden, the median lot size is about 395,888 m². There are also 1 registered easements mapped in the suburb.
What is the population of Mount Marsden?
At the 2021 Census Mount Marsden had 54 usual residents, with a median age of 52 and an average household size of 2.1 people. The wider Lithgow Surrounds statistical area, which contains Mount Marsden, went from 7,567 people in 2001 to 8,544 in 2025, up 13%.
Is Mount Marsden an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mount Marsden scores 953 and sits in decile 4 of 10 nationally and decile 3 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Mount Marsden?
Median household income in Mount Marsden was $860 a week at the 2021 Census, against $1,390 for the typical suburb in Lithgow City. Median rent was $250 a week and the median mortgage repayment $2,600 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Bogee | 7.7 km | 0% | 100% |
| Dunville Loop | 8.4 km | 0% | 100% |
| Clandulla Mid-Western Regional |
8.5 km | 0% | 100% |
| Brogans Creek Mid-Western Regional |
8.8 km | 0% | 100% |
| Charbon Mid-Western Regional |
10.1 km | 0% | 99% |
| Dabee Mid-Western Regional |
10.8 km | 0% | 100% |
| Kandos Mid-Western Regional |
12.4 km | 0% | 94% |
| Glen Alice | 15.7 km | Not mapped | 100% |
| Round Swamp | 15.8 km | 0% | 100% |
| Olinda Mid-Western Regional |
16.4 km | 0% | 100% |