merredin postcode wa Home ›› Postcode Finder ›› WA ›› Merredin Merredin local listingsThe suburb of Merredin is located in WA and has a postcode of 6415. Free merredin business listing! 1St Mary's School31 South Ave 08 904119072North Merredin Primary School22 Coronation St 08 904111403Merredin Senior High SchoolWoolgar Ave 08 90410900 View more business listings in merredin Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.