Home Postcodes by state SA 5410 Postcode 5410 5410 is the postcode for 2 localities in SA: Linwood and Stockport. Localities with postcode 5410LinwoodSAStockportSA Postcode 5410 State or territory South Australia (SA) Localities 2 Council area Light; Clare and Gilbert Valleys Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5401 · Postcode 5411