Seaforth flood map & planning overlays
A planning-constraint profile of Seaforth
(Mackay Regional, QLD) - 68.37 km², mapped from live council and
state overlay data. This suburb is highly constrained.
Profile updated 12 September 2026.
Suburb-wide figures; the free map shows which overlays touch your lot.
Constraint readout
68.37 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Seaforth's boundary, with the flood, bushfire and environmental overlays drawn on top.
Nearby suburbs, nearest first
How common is mapped flood risk across Seaforth properties?
Overlay percentages say how much land is constrained; these figures say how many properties are actually touched in a suburb-wide analysis of 707 Seaforth properties. No individual property result is identified on this page.
Lot-level readout
Flood-risk rating across all 707 properties
From LayeredGeo's lot-risk engine: council flood overlays, historical flooding and terrain, resolved to each individual lot in Seaforth.
Seaforth at a glance
Schools in and near Seaforth
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
1 school providing primary years and 0 providing secondary years. A combined school may be counted in both teaching levels.
Nearest school availability
Primary: inside the suburb
Secondary: 11.30 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 Seaforth is zoned
Selling in Seaforth? 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 68.37 km², Seaforth is highly constrained by planning overlays. About 21% of the suburb sits within a mapped flood overlay, and 44% is flagged bushfire-prone. The dominant land-use zone is Rural. The terrain is largely flat, and the median lot measures about 803 m² across 735 parcels.
Who lives in Seaforth
Census 2021 figures published by the ABS for the Seaforth 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 923, and decile 3 within Queensland. The national average is 1000.
Age profile
Share of Seaforth's 800 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Seaforth - Calen, the wider ABS statistical area containing Seaforth. There is no annual population series published at suburb level, so this describes the surrounding area rather than Seaforth itself.
7,079 in 2001 to 8,785 in 2025, up 24%.
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.
Seaforth 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 |
Profile last materially updated 12 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 Seaforth 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 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 Seaforth lot.
See what's in the $9 report →Seaforth planning - frequently asked
Is Seaforth flood-prone?
About 21% of Seaforth falls within a mapped flood overlay, against the council-wide suburb average of 34%. Across the suburb, 42% of the 707 properties we analysed carry some level of mapped flood risk, including 294 rated high risk or historically affected.
Is Seaforth bushfire-prone?
Around 44% of Seaforth is mapped as bushfire-prone, compared with a Mackay Regional average of 26%.
What is the zoning in Seaforth?
The dominant planning zone in Seaforth is Rural, though the suburb also includes Open space and Township.
Does Seaforth have heritage-listed places?
No heritage-listed places are on record within Seaforth.
Is Seaforth hilly or flat?
Seaforth is largely flat: the median ground slope is about 2%, and 9% of measured points sit on grades of 15% or steeper. Ground level runs from roughly 5 m to 59 m AHD across the suburb.
What is the typical lot size in Seaforth?
Across 735 surveyed parcels in Seaforth, the median lot size is about 803 m². There are also 33 registered easements mapped in the suburb.
What is the population of Seaforth?
At the 2021 Census Seaforth had 800 usual residents, with a median age of 56 and an average household size of 2.1 people. The wider Seaforth - Calen statistical area, which contains Seaforth, went from 7,079 people in 2001 to 8,785 in 2025, up 24%.
Is Seaforth an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Seaforth scores 923 and sits in decile 2 of 10 nationally and decile 3 within Queensland (decile 1 is the most disadvantaged tenth, decile 10 the least).
What is the median household income in Seaforth?
Median household income in Seaforth was $1,088 a week at the 2021 Census, against $1,937 for the typical suburb in Mackay Regional. Median rent was $290 a week and the median mortgage repayment $1,733 a month.
Compare nearby suburbs
| Nearby suburb | Distance | Flood mapped | Bushfire-prone |
|---|---|---|---|
| Haliday Bay | 5.3 km | 22% | 55% |
| Ball Bay | 5.9 km | 7% | 49% |
| Mount Jukes | 7.5 km | 24% | 42% |
| Belmunda | 9.0 km | 86% | 30% |
| Kuttabul | 11.5 km | <1% | 53% |
| Cape Hillsborough | 12.4 km | 22% | 56% |
| Mount Ossa | 12.7 km | 9% | 44% |
| Mount Pelion | 15.3 km | 9% | 37% |
| The Leap | 16.0 km | 11% | 37% |
| St Helens Beach | 17.5 km | 32% | 19% |