silkwood postcode qldbi Home ›› Postcode Finder ›› QLDBI ›› Silkwood Silkwood local listingsThe suburb of Silkwood is located in QLD and has a postcode of 4856. Free silkwood business listing! 1Silkwood State SchoolJapoon Rd 07 406521882St John's Primary School6-12 Harold St 07 40652193 View more business listings in silkwood Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.