Mernda flood map & planning overlays

The schematic on this page is a Mernda flood map: the mapped flood overlays drawn over the suburb's terrain and street grid, covering about 4% of the suburb. Flood lines vary block to block, so for a specific property use the free interactive map - search any Mernda address and it shows the flood, zoning and bushfire mapping on the exact lot boundary.

About 4% of Mernda falls within a mapped flood overlay, against the council-wide suburb average of 4%. Flood overlays vary block to block, so whether a particular lot is affected needs a property-level check.

Around 100% of Mernda is mapped as bushfire-prone, compared with a Whittlesea average of 71%. A bushfire-prone designation can trigger additional building requirements, so check the specific address.

The dominant planning zone in Mernda is Rural Conservation Zone (RCZ1), though the suburb also includes General Residential Zone (GRZ1) and Green Wedge Zone (GWZ). Zoning sets what you can build and do on a site, and can differ lot by lot.

Mernda has 53 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 9,917 surveyed parcels in Mernda, the median lot size is about 425 m². There are also 3,734 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.

Yes - Mernda has 1 train station: Mernda Station. It is also served by 81 bus stops.

At the 2021 Census Mernda had 23,369 usual residents, with a median age of 33 and an average household size of 3.0 people. The wider Mernda - North statistical area, which contains Mernda, went from 686 people in 2001 to 12,061 in 2025, up 1658%. ABS publishes no annual population series for individual suburbs, so that trend describes the surrounding area rather than Mernda alone.

On the ABS SEIFA 2021 index of relative socio-economic advantage and disadvantage (IRSAD), Mernda scores 1009 and sits in decile 7 of 10 nationally and decile 6 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 Mernda was $2,011 a week at the 2021 Census, against $1,735 for the typical suburb in Whittlesea. Median rent was $381 a week and the median mortgage repayment $1,937 a month. These are 2021 Census figures and have not been indexed to today.

A Mernda 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.