Home Postcodes by state WA Murchison Murchison postcode WA Murchison is a locality in Western Australia covered by postcode 6630. Postcode 6630 State or territory Western Australia (WA) Region Wa Subs 4 Coast Council area Murchison Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Murchison business listing Be the first listing in Murchison Also in postcode 6630Devils CreekWA 6630MullewaWA 6630NerramyneWA 6630NunierraWA 6630West CasuarinasWA 6630WongoondyWA 6630WoolgorongWA 6630 Other places called MurchisonMurchisonVIC 3610 Common questionsWhat is the postcode for Murchison?Murchison, WA has the postcode 6630.What state is Murchison in?Murchison is in Western Australia (WA).What council is Murchison in?Murchison is in the Murchison local government area.Does postcode 6630 cover more than one suburb?Yes. Postcode 6630 covers 8 localities, so the postcode alone does not identify Murchison. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.