northbridge postcode wa Home ›› Postcode Finder ›› WA ›› Northbridge Northbridge local listingsThe suburb of Northbridge is located in WA and has a postcode of 6003. Free northbridge business listing! 1Blinds On The Net NorthbridgeLindsay St 13008529122Seen Online DesignNorthbridge WA 6003 04395903113Sinoz Consulting134 Aberdeen Street 0488 979 243 View more business listings in northbridge Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.