Home Postcodes by state TAS 7300 Postcode 7300 7300 is the postcode for 3 localities in TAS: Devon Hills, Perth and Powranna. Localities with postcode 7300Devon HillsTASPerthTASPowrannaTAS Postcode 7300 State or territory Tasmania (TAS) Localities 3 Council area Northern Midlands Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7292 · Postcode 7301