Merghiny flood map & planning overlays
A planning-constraint profile of Merghiny
(The District Council of Ceduna, SA) - 176.27 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 8 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
176.27 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Merghiny's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Merghiny at a glance
How Merghiny is zoned
Selling in Merghiny? The zone and overlays on this page are the Planning and Design Code controls a Form 1 vendor's statement has to disclose.
Across its 176.27 km², Merghiny 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. The median lot measures about 4,312,016 m² across 44 parcels.
Who lives in Merghiny
Census 2021 figures published by the ABS for the Merghiny 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 978, and decile 5 within South Australia. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of West Coast (SA), the wider ABS statistical area containing Merghiny. There is no annual population series published at suburb level, so this describes the surrounding area rather than Merghiny itself.
3,437 in 2001 to 3,895 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.
Merghiny 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 | the South Australian Planning and Design Code and Location SA spatial data |
| Bushfire-prone mapping | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Zoning | Mapped | the South Australian Planning and Design Code and Location SA spatial data |
| Heritage and environment | Mapped where published | the South Australian Planning and Design Code and Location SA spatial data |
| Aircraft noise contours (ANEF) | Not held | the South Australian Planning and Design Code and Location SA spatial data, Defence |
| Observed flight paths | Not watched | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 8 September 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 Merghiny 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.
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Merghiny lot.
See what's in the $9 report →Merghiny planning - frequently asked
Is Merghiny flood-prone?
Flood mapping covers Merghiny and none of the suburb falls within a mapped flood overlay.
Is Merghiny bushfire-prone?
Around 100% of Merghiny is mapped as bushfire-prone, compared with a The District Council of Ceduna average of 94%.
What is the zoning in Merghiny?
The dominant planning zone in Merghiny is Rural, though the suburb also includes Conservation.
Does Merghiny have heritage-listed places?
No heritage-listed places are on record within Merghiny.
What is the typical lot size in Merghiny?
Across 44 surveyed parcels in Merghiny, the median lot size is about 4,312,016 m².
Is Merghiny an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Merghiny scores 978 and sits in decile 5 of 10 nationally and decile 5 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Laura Bay | 10.8 km | 0% | 96% |
| Maltee | 13.0 km | 0% | 100% |
| Ceduna Waters | 14.2 km | 0% | 92% |
| Ceduna | 16.1 km | 0% | 98% |
| Thevenard | 17.2 km | 0% | 26% |
| Wandana | 17.3 km | 0% | 100% |
| Mudamuckla | 25.6 km | 0% | 100% |
| Denial Bay | 27.1 km | 0% | 95% |
| Puntabie | 28.1 km | 0% | 100% |
| Kalanbi | 30.8 km | 0% | 100% |