Home Postcodes by state TAS 7258 Postcode 7258 7258 is the postcode for 3 localities in TAS: Breadalbane, Relbia and White Hills. Localities with postcode 7258BreadalbaneTASRelbiaTASWhite HillsTAS Postcode 7258 State or territory Tasmania (TAS) Localities 3 Council area Northern Midlands; Mainly Launceston, partly Northern Midlands; Launceston Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7257 · Postcode 7259