Sidmouth flood map & planning overlays
A planning-constraint profile of Sidmouth
(West Tamar, TAS) - 23.86 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
23.86 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Sidmouth'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 Sidmouth
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 3 Oct 2026
Night movements: observed, lowest 8,500 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.
Sidmouth at a glance
How Sidmouth is zoned
Buying in Sidmouth? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 23.86 km², Sidmouth is highly constrained by planning overlays. About 5% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There is 1 heritage-listed site on record, and the dominant land-use zone is Agriculture. The median lot measures about 25,507 m² across 260 parcels.
Who lives in Sidmouth
Census 2021 figures published by the ABS for the Sidmouth 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 954, and decile 6 within Tasmania. The national average is 1000.
Age profile
Share of Sidmouth's 411 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Grindelwald - Lanena, the wider ABS statistical area containing Sidmouth. There is no annual population series published at suburb level, so this describes the surrounding area rather than Sidmouth itself.
5,270 in 2001 to 6,416 in 2025, up 22%.
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.
Sidmouth 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 | 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 Sidmouth 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.
Published flood models are held here: a Flood Model Report is available for about 210 Sidmouth addresses (+$9 with the planning report).
See what's in the $9 report →Sidmouth planning - frequently asked
Is Sidmouth flood-prone?
About 5% of Sidmouth falls within a mapped flood overlay, against the council-wide suburb average of 9%. Modelled flood depth, velocity and flood level are held for about 210 Sidmouth addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Sidmouth bushfire-prone?
Around 100% of Sidmouth is mapped as bushfire-prone, compared with a West Tamar average of 95%.
Is Sidmouth under a flight path?
Aircraft were observed over about 4% of Sidmouth in the period sampled, but only above 3,000 ft - the lowest measured was 1,500 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 Sidmouth?
The dominant planning zone in Sidmouth is Agriculture, though the suburb also includes Rural and Rural Living.
Does Sidmouth have heritage-listed places?
Sidmouth has 1 heritage-listed place on record.
What is the typical lot size in Sidmouth?
Across 260 surveyed parcels in Sidmouth, the median lot size is about 25,507 m².
What is the population of Sidmouth?
At the 2021 Census Sidmouth had 411 usual residents, with a median age of 52 and an average household size of 2.3 people. The wider Grindelwald - Lanena statistical area, which contains Sidmouth, went from 5,270 people in 2001 to 6,416 in 2025, up 22%.
Is Sidmouth an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Sidmouth scores 954 and sits in decile 4 of 10 nationally and decile 6 within Tasmania (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Sidmouth?
Median household income in Sidmouth was $1,131 a week at the 2021 Census, against $1,293 for the typical suburb in West Tamar. Median rent was $250 a week and the median mortgage repayment $1,604 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Deviot | 3.8 km | 5% | 99% |
| Kayena | 4.7 km | 12% | 99% |
| Loira | 5.0 km | 13% | 100% |
| Flowery Gully | 5.1 km | 5% | 100% |
| Robigana | 6.9 km | 12% | 100% |
| Rowella | 7.0 km | 15% | 100% |
| Winkleigh | 7.5 km | 8% | 100% |
| Hillwood George Town |
8.2 km | 5% | 100% |
| Swan Point | 8.3 km | 14% | 94% |
| Gravelly Beach | 9.6 km | 7% | 97% |