Home Postcode finder SA Spectacle Lake Spectacle Lake postcode SA Spectacle Lake is a locality in South Australia covered by postcode 5345. Postcode 5345 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Spectacle Lake business listing Be the first listing in Spectacle Lake Common questionsWhat is the postcode for Spectacle Lake?Spectacle Lake, SA has the postcode 5345.What state is Spectacle Lake in?Spectacle Lake is in South Australia (SA).Does postcode 5345 cover more than one suburb?Yes. Postcode 5345 covers 3 localities, so the postcode alone does not identify Spectacle Lake. Browse other postcodes in South Australia, or widen the search to every Australian postcode.