frenchman-bay postcode wa Home ›› Postcode Finder ›› WA ›› Frenchman-Bay Frenchman Bay local listingsThe suburb of Frenchman Bay is located in WA and has a postcode of 6330. Free frenchman bay business listing! Get the first free listing in frenchman bay! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.