whyalla postcode sa Home ›› Postcode Finder ›› SA ›› Whyalla Whyalla local listingsThe suburb of Whyalla is located in SA and has a postcode of 5600. Free whyalla business listing! 1Samaritan College70 Gowrie Ave 08 864585682Memorial Oval Primary School58 Bradford St 08 864579913Whyalla High SchoolBroadbent Terrace 08 86458844 View more business listings in whyalla Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.