Home Postcode finder VIC Brentford Square Brentford Square postcode VIC Brentford Square is a locality in Victoria covered by postcode 3131. Postcode 3131 State or territory Victoria (VIC) Region Ferntree Gully Add a free Brentford Square business listing Be the first listing in Brentford Square Common questionsWhat is the postcode for Brentford Square?Brentford Square, VIC has the postcode 3131.What state is Brentford Square in?Brentford Square is in Victoria (VIC).Does postcode 3131 cover more than one suburb?Yes. Postcode 3131 covers 3 localities, so the postcode alone does not identify Brentford Square. Browse other postcodes in Victoria, or widen the search to every Australian postcode.