Home Postcode finder SA Semaphore Park Semaphore Park postcode SA Semaphore Park is a locality in South Australia covered by postcode 5019. Postcode 5019 State or territory South Australia (SA) Region Adelaide Add a free Semaphore Park business listing More business listings in Semaphore Park Businesses in Semaphore ParkOne Stop Inspections26 Sutherland Ave, Semaphore Park SA 5019, Australia · 0413 975 604Westport Primary School53 West St · 08 83417090 Common questionsWhat is the postcode for Semaphore Park?Semaphore Park, SA has the postcode 5019.What state is Semaphore Park in?Semaphore Park is in South Australia (SA).Does postcode 5019 cover more than one suburb?Yes. Postcode 5019 covers 4 localities, so the postcode alone does not identify Semaphore Park. Browse other postcodes in South Australia, or widen the search to every Australian postcode.