Cairns Bay flood map & planning overlays
A planning-constraint profile of Cairns Bay
(Huon Valley, TAS) - 2.72 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 6 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
2.72 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Cairns Bay's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Cairns Bay at a glance
How Cairns Bay is zoned
Buying in Cairns Bay? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 2.72 km², Cairns Bay is highly constrained by planning overlays. About 7% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. The dominant land-use zone is Rural. The median lot measures about 21,173 m² across 46 parcels.
Who lives in Cairns Bay
Census 2021 figures published by the ABS for the Cairns Bay 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 957, and decile 7 within Tasmania. The national average is 1000.
Population trend, 2001 to 2025
Estimated resident population of Geeveston - Dover, the wider ABS statistical area containing Cairns Bay. There is no annual population series published at suburb level, so this describes the surrounding area rather than Cairns Bay itself.
3,466 in 2001 to 4,408 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.
Cairns Bay 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 Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Bushfire-prone mapping | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Zoning | Mapped | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Heritage and environment | Mapped where published | the Tasmanian Planning Scheme and the LIST (Land Tasmania) |
| Aircraft noise contours (ANEF) | Not held | the Tasmanian Planning Scheme and the LIST (Land Tasmania), 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 6 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 Cairns Bay 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.
Published flood models are held here: a Flood Model Report is available for about 30 Cairns Bay addresses (+$9 with the planning report).
See what's in the $9 report →Cairns Bay planning - frequently asked
Is Cairns Bay flood-prone?
About 7% of Cairns Bay falls within a mapped flood overlay, against the council-wide suburb average of 8%. Modelled flood depth, velocity and flood level are held for about 30 Cairns Bay addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Cairns Bay bushfire-prone?
Around 100% of Cairns Bay is mapped as bushfire-prone, compared with a Huon Valley average of 99%.
What is the zoning in Cairns Bay?
The dominant planning zone in Cairns Bay is Rural, though the suburb also includes Agriculture and Landscape Conservation.
Does Cairns Bay have heritage-listed places?
No heritage-listed places are on record within Cairns Bay.
What is the typical lot size in Cairns Bay?
Across 46 surveyed parcels in Cairns Bay, the median lot size is about 21,173 m².
Is Cairns Bay an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Cairns Bay scores 957 and sits in decile 4 of 10 nationally and decile 7 within Tasmania (decile 1 is the most disadvantaged tenth, decile 10 the least).
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Waterloo | 2.7 km | 5% | 100% |
| Port Huon | 3.2 km | 9% | 94% |
| Petcheys Bay | 4.2 km | 5% | 100% |
| Surges Bay | 4.8 km | 5% | 100% |
| Wattle Grove | 4.9 km | 5% | 100% |
| Lower Wattle Grove | 6.1 km | 4% | 100% |
| Glendevie | 7.2 km | 3% | 100% |
| Glaziers Bay | 7.2 km | 5% | 100% |
| Brooks Bay | 7.3 km | 3% | 100% |
| Lymington | 7.6 km | 6% | 100% |