Home Postcode finder SA Streaky Bay Streaky Bay postcode SA Streaky Bay is a locality in South Australia covered by postcode 5680. Postcode 5680 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Streaky Bay business listing More business listings in Streaky Bay Businesses in Streaky BayMiltaburra Area SchoolRSD 70 · 08 86268088Streaky Bay Area School109 Wells St · 08 86261202 Common questionsWhat is the postcode for Streaky Bay?Streaky Bay, SA has the postcode 5680.What state is Streaky Bay in?Streaky Bay is in South Australia (SA).Does postcode 5680 cover more than one suburb?Yes. Postcode 5680 covers 20 localities, so the postcode alone does not identify Streaky Bay. Browse other postcodes in South Australia, or widen the search to every Australian postcode.