Home Postcodes by state TAS 7315 Postcode 7315 7315 is the postcode for 17 localities in TAS: Abbotsham, Castra, Gawler, Gunns Plains, Leith, Loongana and 11 more. Localities with postcode 7315AbbotshamTASCastraTASGawlerTASGunns PlainsTASLeithTASLoonganaTASNiettaTASNorth MottonTASPrestonTASSouth NiettaTASSouth PrestonTASSpalfordTASSprentTASTurners BeachTASUlverstoneTASUpper CastraTASWest UlverstoneTAS Postcode 7315 State or territory Tasmania (TAS) Localities 17 Council area Central Coast; Mainly Central Coast, partly Devonport Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7310 · Postcode 7316