Home Postcode finder VIC Colbrook Colbrook postcode VIC Colbrook is a locality in Victoria covered by postcode 3342. Postcode 3342 State or territory Victoria (VIC) Region Vic Far Country Add a free Colbrook business listing Be the first listing in Colbrook Common questionsWhat is the postcode for Colbrook?Colbrook, VIC has the postcode 3342.What state is Colbrook in?Colbrook is in Victoria (VIC).Does postcode 3342 cover more than one suburb?Yes. Postcode 3342 covers 9 localities, so the postcode alone does not identify Colbrook. Browse other postcodes in Victoria, or widen the search to every Australian postcode.