Deddington flood map & planning overlays
A planning-constraint profile of Deddington
(Northern Midlands, TAS) - 270.59 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 26 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
270.59 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Deddington'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 Deddington
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 26 Sep 2026
typical observed square 4 a day
Night movements: not established - night is sampled as often as day, but too few night flights have been seen here to conclude either way.
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.
Deddington at a glance
How Deddington is zoned
Buying in Deddington? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 270.59 km², Deddington is highly constrained by planning overlays. About 6% of the suburb sits within a mapped flood overlay, and 100% is flagged bushfire-prone. There are 25 heritage-listed sites on record, and the dominant land-use zone is Agriculture. The median lot measures about 403,302 m² across 139 parcels.
Who lives in Deddington
Census 2021 figures published by the ABS for the Deddington 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 965, and decile 7 within Tasmania. The national average is 1000.
Age profile
Share of Deddington's 85 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Northern Midlands, the wider ABS statistical area containing Deddington. There is no annual population series published at suburb level, so this describes the surrounding area rather than Deddington itself.
3,727 in 2001 to 3,883 in 2025, up 4%.
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.
Deddington 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 26 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 Deddington 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 40 Deddington addresses (+$9 with the planning report).
See what's in the $9 report →Deddington planning - frequently asked
Is Deddington flood-prone?
About 6% of Deddington falls within a mapped flood overlay, against the council-wide suburb average of 12%. Modelled flood depth, velocity and flood level are held for about 40 Deddington addresses, from published flood studies; the free check on the Flood Model Report page says whether a model reaches a given address.
Is Deddington bushfire-prone?
Around 100% of Deddington is mapped as bushfire-prone, compared with a Northern Midlands average of 99%.
Is Deddington under a flight path?
Aircraft were observed over about 5% of Deddington in the period sampled, but only above 3,000 ft - the lowest measured was 1,000 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 Deddington?
The dominant planning zone in Deddington is Agriculture, though the suburb also includes Rural and Landscape Conservation.
Does Deddington have heritage-listed places?
Deddington has 25 heritage-listed places on record.
What is the typical lot size in Deddington?
Across 139 surveyed parcels in Deddington, the median lot size is about 403,302 m².
What is the population of Deddington?
At the 2021 Census Deddington had 85 usual residents, with a median age of 43 and an average household size of 2.5 people. The wider Northern Midlands statistical area, which contains Deddington, went from 3,727 people in 2001 to 3,883 in 2025, up 4%.
Is Deddington an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Deddington scores 965 and sits in decile 4 of 10 nationally and decile 7 within Tasmania (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Deddington?
Median household income in Deddington was $1,718 a week at the 2021 Census, against $1,375 for the typical suburb in Northern Midlands. Median rent was $200 a week and the median mortgage repayment $1,640 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Nile | 10.8 km | 25% | 100% |
| Evandale | 12.9 km | 16% | 99% |
| Blessington Launceston |
13.5 km | 10% | 100% |
| Ben Lomond | 15.9 km | 3% | 100% |
| Burns Creek Launceston |
17.1 km | 7% | 100% |
| White Hills Launceston |
17.5 km | 6% | 100% |
| Conara | 18.8 km | 11% | 100% |
| Powranna | 19.3 km | 25% | 100% |
| Rossarden | 19.4 km | 4% | 100% |
| Upper Blessington Launceston |
19.6 km | 7% | 100% |