walpole postcode wa Home ›› Postcode Finder ›› WA ›› Walpole Walpole local listingsThe suburb of Walpole is located in WA and has a postcode of 6398. Free walpole business listing! 1Walpole Primary SchoolLatham & Swan Sts 08 98401020 View more business listings in walpole Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.