Grassy flood map & planning overlays
A planning-constraint profile of Grassy
(King Island, TAS) - 14.45 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
14.45 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Grassy's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
Grassy at a glance
How Grassy is zoned
Buying in Grassy? The zone and code overlays on this page are the Tasmanian Planning Scheme controls a section 337 certificate reports for a title.
Across its 14.45 km², Grassy is highly constrained by planning overlays. About 9% of the suburb sits within a mapped flood overlay, and 98% is flagged bushfire-prone. The dominant land-use zone is Particular Purpose. The median lot measures about 892 m² across 174 parcels.
Who lives in Grassy
Census 2021 figures published by the ABS for the Grassy 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 948, and decile 6 within Tasmania. The national average is 1000.
Age profile
Share of Grassy's 121 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of King Island, the wider ABS statistical area containing Grassy. There is no annual population series published at suburb level, so this describes the surrounding area rather than Grassy itself.
1,741 in 2001 to 1,647 in 2025, down 5%.
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.
Grassy 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 | Not watched | 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 Grassy 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.
See what's in the $9 report →Grassy planning - frequently asked
Is Grassy flood-prone?
About 9% of Grassy falls within a mapped flood overlay, against the council-wide suburb average of 5%.
Is Grassy bushfire-prone?
Around 98% of Grassy is mapped as bushfire-prone, compared with a King Island average of 99%.
What is the zoning in Grassy?
The dominant planning zone in Grassy is Particular Purpose, though the suburb also includes Village and Environmental Management.
Does Grassy have heritage-listed places?
No heritage-listed places are on record within Grassy.
What is the typical lot size in Grassy?
Across 174 surveyed parcels in Grassy, the median lot size is about 892 m².
What is the population of Grassy?
At the 2021 Census Grassy had 121 usual residents, with a median age of 36 and an average household size of 2.0 people. The wider King Island statistical area, which contains Grassy, went from 1,741 people in 2001 to 1,647 in 2025, down 5%.
Is Grassy an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Grassy scores 948 and sits in decile 3 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 Grassy?
Median household income in Grassy was $916 a week at the 2021 Census, against $1,281 for the typical suburb in King Island. Median rent was $125 a week and the median mortgage repayment $625 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Yarra Creek | 5.6 km | 3% | 100% |
| Lymwood | 5.8 km | <1% | 100% |
| Pearshape | 13.0 km | 2% | 100% |
| Pegarah | 14.1 km | <1% | 100% |
| Naracoopa | 14.6 km | 16% | 98% |
| Surprise Bay | 15.5 km | 15% | 99% |
| Nugara | 17.0 km | 1% | 100% |
| Currie | 23.3 km | 4% | 95% |
| Loorana | 23.7 km | 2% | 100% |
| Sea Elephant | 24.6 km | 10% | 100% |