koongamia postcode wa Home ›› Postcode Finder ›› WA ›› Koongamia Koongamia local listingsThe suburb of Koongamia is located in WA and has a postcode of 6056. Free koongamia business listing! Get the first free listing in koongamia! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.