Monaltrie flood map & planning overlays
A planning-constraint profile of Monaltrie
(Lismore, NSW) - 19.27 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
19.27 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Monaltrie'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 Monaltrie
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: observed, lowest 9,000 ft - night is sampled as often as day, but night traffic is light, so this is a floor and no rate can be put on it.
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.
Monaltrie at a glance
How Monaltrie is zoned
Buying in Monaltrie? 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 19.27 km², Monaltrie is highly constrained by planning overlays. About 38% of the suburb sits within a mapped flood overlay, and 13% is flagged bushfire-prone. There are 2 heritage-listed sites on record, and the dominant land-use zone is Primary Production. The median lot measures about 7,756 m² across 247 parcels.
Who lives in Monaltrie
Census 2021 figures published by the ABS for the Monaltrie 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 928, and decile 2 within New South Wales. The national average is 1000.
Age profile
Share of Monaltrie's 235 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Lismore, the wider ABS statistical area containing Monaltrie. There is no annual population series published at suburb level, so this describes the surrounding area rather than Monaltrie itself.
16,516 in 2001 to 13,679 in 2025, down 17%.
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.
Monaltrie 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 Monaltrie 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 Monaltrie lot.
See what's in the $9 report →Monaltrie planning - frequently asked
Is Monaltrie flood-prone?
About 38% of Monaltrie falls within a mapped flood overlay, against the council-wide suburb average of 46%.
Is Monaltrie bushfire-prone?
Around 13% of Monaltrie is mapped as bushfire-prone, compared with a Lismore average of 33%.
Is Monaltrie under a flight path?
Aircraft were observed over about 10% of Monaltrie in the period sampled, but only above 3,000 ft - the lowest measured was 7,000 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 Monaltrie?
The dominant planning zone in Monaltrie is Primary Production, though the suburb also includes Infrastructure and Natural Waterways.
Does Monaltrie have heritage-listed places?
Monaltrie has 2 heritage-listed places on record.
What is the typical lot size in Monaltrie?
Across 247 surveyed parcels in Monaltrie, the median lot size is about 7,756 m². There are also 3 registered easements mapped in the suburb.
What is the population of Monaltrie?
At the 2021 Census Monaltrie had 235 usual residents, with a median age of 48 and an average household size of 2.6 people. The wider Lismore statistical area, which contains Monaltrie, went from 16,516 people in 2001 to 13,679 in 2025, down 17%.
Is Monaltrie an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Monaltrie scores 928 and sits in decile 3 of 10 nationally and decile 2 within New South Wales (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Monaltrie?
Median household income in Monaltrie was $1,471 a week at the 2021 Census, against $1,458 for the typical suburb in Lismore. Median rent was $300 a week and the median mortgage repayment $1,559 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| East Lismore | 3.1 km | 21% | 33% |
| Loftville | 3.3 km | 82% | 8% |
| Goonellabah | 3.8 km | <1% | 34% |
| Girards Hill | 4.0 km | 27% | 22% |
| Wyrallah | 4.7 km | 28% | 15% |
| Lismore | 5.1 km | 53% | 22% |
| South Lismore | 5.3 km | 69% | 8% |
| Lismore Heights | 5.4 km | 8% | 22% |
| Chilcotts Grass | 5.5 km | Not mapped | 79% |
| South Gundurimba | 6.0 km | 73% | 8% |