Home Postcode finder VIC Long Gully Long Gully postcode VIC Long Gully is a locality in Victoria covered by postcode 3550. Postcode 3550 State or territory Victoria (VIC) Region Vic Country Add a free Long Gully business listing Be the first listing in Long Gully Common questionsWhat is the postcode for Long Gully?Long Gully, VIC has the postcode 3550.What state is Long Gully in?Long Gully is in Victoria (VIC).Does postcode 3550 cover more than one suburb?Yes. Postcode 3550 covers 14 localities, so the postcode alone does not identify Long Gully. Browse other postcodes in Victoria, or widen the search to every Australian postcode.