balcatta postcode wa Home ›› Postcode Finder ›› WA ›› Balcatta Balcatta local listingsThe suburb of Balcatta is located in WA and has a postcode of 6021. Free balcatta business listing! 1Balcatta Senior High School31 Poincaire St 08 934582002Balcatta Primary School387 Main St 08 934581003St Lawrence's Primary School386 Albert St 08 93444944 View more business listings in balcatta Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.