wynnum postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Wynnum Wynnum local listingsThe suburb of Wynnum is located in QLD and has a postcode of 4178. Free wynnum business listing! 1Guardian Angels Primary School188 Bay Terrace 07 339644862Wynnum Central State School145 Florence St 07 389371113Wynnum North State School96 Prospect St 07 38937333 View more business listings in wynnum Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.