Grantham flood map & planning overlays
A planning-constraint profile of Grantham (Lockyer Valley Regional, QLD) - 49.33 km², mapped from live council and state overlay data. This suburb is highly constrained.
Everything below is suburb-wide. Overlays change block to block - see which ones actually touch your lot. The map is free.
Constraint readout
49.33 km² - this suburb is highly constrained by planning overlays.
Elevation hillshade with street names, clipped to Grantham's boundary, with the flood, bushfire and environmental overlays drawn on top. It shows where constraints fall; the interactive map shows them on your exact address.
Grantham at a glance
How Grantham is zoned
Selling in Grantham? 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 49.33 km², Grantham is highly constrained by planning overlays. About 21% of the suburb sits within a mapped flood overlay, and 73% is flagged bushfire-prone. There are 9 heritage-listed sites on record, and the dominant land-use zone is Rural. The median lot measures about 4,183 m² across 510 parcels. These figures are suburb-wide - the overlays that actually apply to a given lot can differ block to block, which is what a property-level check tells you.
Who lives in Grantham
Census 2021 figures published by the ABS for the Grantham 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 900, and decile 2 within Queensland. The national average is 1000.
Age profile
Share of Grantham's 796 residents in each ABS age band.
Population trend, 2001 to 2025
Estimated resident population of Lockyer Valley - West, the wider ABS statistical area containing Grantham. There is no annual population series published at suburb level, so this describes the surrounding area rather than Grantham itself.
8,973 in 2001 to 13,029 in 2025, up 45%.
Source: Australian Bureau of Statistics. Census of Population and Housing 2021 (General Community Profile) and SEIFA 2021, both published at the Suburbs and Localities level; Regional Population (estimated resident population) at Statistical Area Level 2. Used under CC BY 4.0. Census counts of small populations are randomly adjusted by the ABS to protect confidentiality, so figures for small suburbs are indicative.
Check a specific Grantham 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 →Grantham planning - frequently asked
Where can I see a flood map of Grantham?
The schematic on this page is a Grantham flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 21% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Grantham address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.
Is Grantham flood-prone?
About 21% of Grantham falls within a mapped flood overlay, against a Lockyer Valley Regional average of 20%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.
Is Grantham bushfire-prone?
Yes - around 73% of Grantham is mapped as bushfire-prone, compared with a Lockyer Valley Regional average of 63%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.
What is the zoning in Grantham?
The dominant planning zone in Grantham is Rural, though the suburb also includes Conservation and Community Facilities. Zoning sets what you can build and do on a site, and can differ lot by lot.
Does Grantham have heritage-listed places?
Grantham has 9 heritage-listed places on record. Heritage listing affects what you can alter or demolish, so confirm whether a specific property is listed or near a heritage place.
What is the typical lot size in Grantham?
Across 510 surveyed parcels in Grantham, the median lot size is about 4,183 m². There are also 76 registered easements mapped in the suburb - an easement can restrict where you can build, so always check the title and overlays for the specific lot.
Does Grantham have a train station?
There is no train station inside Grantham itself. The suburb is served by 2 bus stops.
What is the population of Grantham?
At the 2021 Census Grantham had 796 usual residents, with a median age of 36 and an average household size of 2.7 people. The wider Lockyer Valley - West statistical area, which contains Grantham, went from 8,973 people in 2001 to 13,029 in 2025, up 45%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Grantham alone.
Is Grantham an advantaged suburb?
On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Grantham scores 900 and sits in decile 2 of 10 nationally and decile 2 within Queensland - decile 1 being the most disadvantaged tenth of Australian suburbs and decile 10 the least. The national average score is 1000. SEIFA summarises income, education, occupation and housing across the whole suburb, so it describes the area, not any particular household in it.
What is the median household income in Grantham?
Median household income in Grantham was $1,406 a week at the 2021 Census, against $1,521 for the typical suburb in Lockyer Valley Regional. Median rent was $290 a week and the median mortgage repayment $1,300 a month. These are 2021 Census figures and have not been indexed to today.
Do I need a planning report for a Grantham property?
A Grantham planning report pulls every overlay - zoning, flood, bushfire, heritage and environmental - that touches a single lot, on live council and state data. The interactive map preview is free; a full PDF report is $9.