Square Mile flood map & planning overlays
A planning-constraint profile of Square Mile
(Southern Limestone Coast Council, SA) - 2.66 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 4 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
2.66 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Square Mile's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Square Mile at a glance
How Square Mile is zoned
Selling in Square Mile? 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 2.66 km², Square Mile 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 Horticulture. The median lot measures about 131,363 m² across 23 parcels.
Who lives in Square Mile
Census 2021 figures published by the ABS for the Square Mile 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 1002, and decile 7 within South Australia. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Grant, the wider ABS statistical area containing Square Mile. There is no annual population series published at suburb level, so this describes the surrounding area rather than Square Mile itself.
5,110 in 2001 to 6,505 in 2025, up 27%.
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.
Square Mile 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 | Watched, not yet sampled here | adsb.lol, under the Open Database License |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
Profile last materially updated 4 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 Square Mile 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 Square Mile lot.
See what's in the $9 report →Square Mile planning - frequently asked
Is Square Mile flood-prone?
Flood mapping covers Square Mile and none of the suburb falls within a mapped flood overlay.
Is Square Mile bushfire-prone?
Around 100% of Square Mile is mapped as bushfire-prone, compared with a Southern Limestone Coast Council average of 98%.
What is the zoning in Square Mile?
The dominant planning zone in Square Mile is Rural Horticulture, though the suburb also includes Rural.
Does Square Mile have heritage-listed places?
No heritage-listed places are on record within Square Mile.
What is the typical lot size in Square Mile?
Across 23 surveyed parcels in Square Mile, the median lot size is about 131,363 m².
Is Square Mile an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Square Mile scores 1002 and sits in decile 6 of 10 nationally and decile 7 within South Australia (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Ob Flat | 2.5 km | 0% | 100% |
| Yahl | 4.2 km | 0% | 100% |
| Mount Gambier City of Mount Gambier |
5.3 km | 0% | 41% |
| Worrolong | 7.8 km | 0% | 98% |
| Caveton | 9.5 km | 0% | 100% |
| Moorak | 10.2 km | 0% | 100% |
| Caroline | 10.6 km | 0% | 100% |
| Suttontown | 10.6 km | 0% | 96% |
| Glenburnie | 11.4 km | 0% | 100% |
| Mil-Lel | 11.8 km | 0% | 100% |