Home Postcodes by state TAS 7183 Postcode 7183 7183 is the postcode for Highcroft, TAS. Localities with postcode 7183HighcroftTAS Postcode 7183 State or territory Tasmania (TAS) Localities 1 Council area Tasman Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7182 · Postcode 7184