Home Postcodes by state TAS 7022 Postcode 7022 7022 is the postcode for South Arm, TAS. Localities with postcode 7022South ArmTAS Postcode 7022 State or territory Tasmania (TAS) Localities 1 Council area Clarence Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 7021 · Postcode 7023