Karragarra Island flood map & planning overlays
A planning-constraint profile of Karragarra Island
(Redland City, QLD) - 2.42 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 19 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
2.42 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Karragarra Island's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
How common is mapped flood risk across Karragarra Island properties?
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched in a suburb-wide analysis of 292 Karragarra Island properties. No individual property result is identified on this page.
Lot-level readout
Flood-risk rating across all 292 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Karragarra Island.
Karragarra Island at a glance
Schools in and near Karragarra Island
Public school-location data shows availability across the suburb. These figures do not rate schools and do not assign a particular address to a catchment.
Inside the suburb boundary
0 schools providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: 0.82 km from the suburb boundary
Secondary: 8.12 km from the suburb boundary
Source: Queensland Government school geographic information. Catchment boundaries can divide a suburb and change over time; use the official catchment finder for a specific address.
How Karragarra Island is zoned
Selling in Karragarra Island? The lot-level zone is the zoning Part 3 of Queensland's Form 2 seller disclosure statement asks for - see our Form 2 planning data guide.
Across its 2.42 km², Karragarra Island is highly constrained by planning overlays. About 47% of the suburb sits within a mapped flood overlay, and 12% is flagged bushfire-prone. The dominant land-use zone is Character Residential. The terrain is largely flat, and the median lot measures about 689 m² across 287 parcels.
Who lives in Karragarra Island
Census 2021 figures published by the ABS for the Karragarra Island 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 904, and decile 2 within Queensland. The national average is 1000.
Age profile
Share of Karragarra Island's 240 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Southern Moreton Bay Islands, the wider ABS statistical area containing Karragarra Island. There is no annual population series published at suburb level, so this describes the surrounding area rather than Karragarra Island itself.
3,857 in 2001 to 10,466 in 2025, up 171%.
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.
Karragarra Island property market snapshot
Queensland Government publishes this as a SA2 market series for Southern Moreton Bay Islands, the wider statistical area containing Karragarra Island. It is not a valuation and is not specific to this suburb or any individual property.
House sales
Median sale price from 644 sales over 12 months to March 2026.
Source: Queensland Government Statistician's Office (QGSO). View the source profile. The same SA2 figure can appear on several suburb pages within that statistical area.
Karragarra Island 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 relevant council planning scheme and Queensland Government spatial data |
| Bushfire-prone mapping | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Zoning | Mapped | the relevant council planning scheme and Queensland Government spatial data |
| Heritage and environment | Mapped where published | the relevant council planning scheme and Queensland Government spatial data |
| Aircraft noise contours (ANEF) | Not held | the relevant council planning scheme and Queensland Government spatial data, Defence |
| Demographics | Available | Australian Bureau of Statistics (2021 Census and SEIFA) |
| School availability | Available | Queensland Government |
| Market statistics | Available at SA2 level | Queensland Government Statistician's Office (QGSO) |
Profile last materially updated 19 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 Karragarra Island 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 over parts of Karragarra Island. The free check tells you whether one reaches an address; where it does, a Flood Model Report is +$9 with the planning report.
The Terrain Report shows the fall of the block - contours, cross sections and a 3D model of the lot (+$9 with the planning report).
Building or pricing a slab? The $119 geotechnical desktop report covers geology, soils, bores and an indicative AS 2870 site class for a Karragarra Island lot.
See what's in the $9 report →Karragarra Island planning - frequently asked
Is Karragarra Island flood-prone?
About 47% of Karragarra Island falls within a mapped flood overlay, against the council-wide suburb average of 27%. Across the suburb, 52% of the 292 properties we analysed carry some level of mapped flood risk, including 120 rated high risk or historically affected.
Is Karragarra Island bushfire-prone?
Around 12% of Karragarra Island is mapped as bushfire-prone, compared with a Redland City average of 41%.
What is the zoning in Karragarra Island?
The dominant planning zone in Karragarra Island is Character Residential, though the suburb also includes Conservation and Rural.
Does Karragarra Island have heritage-listed places?
No heritage-listed places are on record within Karragarra Island.
Is Karragarra Island hilly or flat?
Karragarra Island is largely flat: the median ground slope is about 2%. Ground level runs from roughly 0 m to 5 m AHD across the suburb.
What is the typical lot size in Karragarra Island?
Across 287 surveyed parcels in Karragarra Island, the median lot size is about 689 m². There are also 2 registered easements mapped in the suburb.
Does Karragarra Island have a train station?
There is no train station inside Karragarra Island itself. The suburb is served by 1 ferry terminal.
What is the population of Karragarra Island?
At the 2021 Census Karragarra Island had 240 usual residents, with a median age of 63 and an average household size of 1.8 people. The wider Southern Moreton Bay Islands statistical area, which contains Karragarra Island, went from 3,857 people in 2001 to 10,466 in 2025, up 171%.
Is Karragarra Island an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Karragarra Island scores 904 and sits in decile 2 of 10 nationally and decile 2 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Karragarra Island?
Median household income in Karragarra Island was $872 a week at the 2021 Census, against $1,488 for the typical suburb in Redland City. Median rent was $268 a week and the median mortgage repayment $867 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Lamb Island | 2.1 km | 34% | 17% |
| Russell Island | 3.9 km | 48% | 39% |
| Macleay Island | 4.1 km | 34% | 22% |
| Redland Bay | 8.5 km | 25% | 71% |
| Coochiemudlo Island | 8.9 km | 31% | 20% |
| Victoria Point | 9.4 km | 30% | 28% |
| North Stradbroke Island | 10.3 km | 10% | 87% |
| Moreton Bay | 11.0 km | 9% | <1% |
| Steiglitz Gold Coast City |
11.6 km | 98% | 13% |
| Carbrook Logan City |
12.2 km | 73% | 80% |