carnamah postcode wa Home ›› Postcode Finder ›› WA ›› Carnamah Carnamah local listingsThe suburb of Carnamah is located in WA and has a postcode of 6517. Free carnamah business listing! 1Carnamah District High School48 McPherson St 08 99511266 View more business listings in carnamah Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.