armadale postcode wa Home ›› Postcode Finder ›› WA ›› Armadale Armadale local listingsThe suburb of Armadale is located in WA and has a postcode of 6112. Free armadale business listing! 1Armadale Senior High School169 South Western Hwy 08 949764002Cecil Andrews Senior High School39 Seville Drive 08 949702003John Calvin Christian College18 Robin Hood Ave 08 94970000 View more business listings in armadale Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.