Home Postcode finder WA South Guildford South Guildford postcode WA South Guildford is a locality in Western Australia covered by postcode 6055. Postcode 6055 State or territory Western Australia (WA) Region North West Suburbs Add a free South Guildford business listing More business listings in South Guildford Businesses in South GuildfordDirect Blast5 Kalamunda Road · (08) 6278 3711Guildford Dental Centreu6/9 Waterhall Rd, South Guildford WA, Australia · 0861040370Home Project Co.South Guildford WA, Australia · 0423358988 Common questionsWhat is the postcode for South Guildford?South Guildford, WA has the postcode 6055.What state is South Guildford in?South Guildford is in Western Australia (WA).Does postcode 6055 cover more than one suburb?Yes. Postcode 6055 covers 6 localities, so the postcode alone does not identify South Guildford. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.