semaphore-park postcode sa Home ›› Postcode Finder ›› SA ›› Semaphore-Park Semaphore Park local listingsThe suburb of Semaphore Park is located in SA and has a postcode of 5019. Free semaphore park business listing! Get the first free listing in semaphore park! Search and find other Postcodes in South Australia or widen the search to Postcodes in Australia.