Home Postcode finder SA Welland Welland postcode SA Welland is a locality in South Australia covered by postcode 5007. Postcode 5007 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Welland business listing More business listings in Welland Businesses in WellandAdelaide Mini Bins158 Frederick St · 08 8340 2200Fix-It Right Plumbing Adelaide8/126 Frederick St, Welland South Australia 5007, Australia · +61 8 7079 2007SA Sweepers And Scrubbers97 Welland Avenue, Welland South Australia 5007, Australia · 0883407936 Common questionsWhat is the postcode for Welland?Welland, SA has the postcode 5007.What state is Welland in?Welland is in South Australia (SA).Does postcode 5007 cover more than one suburb?Yes. Postcode 5007 covers 5 localities, so the postcode alone does not identify Welland. Browse other postcodes in South Australia, or widen the search to every Australian postcode.