Merricks flood map & planning overlays

The schematic on this page is a Merricks flood map: the mapped flood overlays drawn over the suburb's terrain and street grid. Flood lines vary block to block, so for a specific property use the free interactive map - search any Merricks address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.

Flood mapping covers Merricks and none of the suburb falls within a mapped flood overlay (the council-wide suburb average is 3%). Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.

Around 98% of Merricks is mapped as bushfire-prone, compared with a Mornington Peninsula average of 89%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.

The dominant planning zone in Merricks is Green Wedge Zone (GWZ2), though the suburb also includes Public Park and Recreation Zone (PPRZ) and Transport Zone (TRZ2). Zoning sets what you can build and do on a site, and can differ lot by lot.

Merricks has 6 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.

Across 165 surveyed parcels in Merricks, the median lot size is about 40,465 m². There are also 149 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.

There is no train station inside Merricks itself. The suburb is served by 2 bus stops.

At the 2021 Census Merricks had 184 usual residents, with a median age of 57 and an average household size of 2.2 people. The wider Flinders statistical area, which contains Merricks, went from 5,811 people in 2001 to 6,064 in 2025, up 4%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Merricks alone.

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Merricks scores 1124 and sits in decile 10 of 10 nationally and decile 10 within Victoria - 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.

Median household income in Merricks was $2,750 a week at the 2021 Census, against $1,906 for the typical suburb in Mornington Peninsula. Median rent was $258 a week and the median mortgage repayment $3,500 a month. These are 2021 Census figures and have not been indexed to today.

A Merricks planning report pulls every overlay - zoning, flood, bushfire, heritage, environmental and noise - that touches a single lot, on live council and state data. The interactive map preview is free; the full PDF report is $9.