peppermint-grove postcode wa Home ›› Postcode Finder ›› WA ›› Peppermint-Grove Peppermint Grove local listingsThe suburb of Peppermint Grove is located in WA and has a postcode of 6011. Free peppermint grove business listing! Get the first free listing in peppermint grove! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.